David Howell, PhD
Associate Professor, Orthopedics

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Graduate Schools :
  • MS, University of Oregon (2011)
  • PhD, University of Oregon (2014)
Undergraduate School:
  • BA/BS, Whitworth University (WA) (2008)
Fellowships:
  • Children's Hospital (Boston) Program, Pediatric Sports Medicine (2017)
Department: Orthopedics

Professional Titles

  • Associate Professor, Department of Orthopedics
  • Research Director, Children's Hospital Colorado Sports Medicine Center
  • Director, Colorado Concussion Research Laboratory
  • Director of Clinical Research, Department of Orthopedics

Publications

  • Wingerson MJ, Wilson JC, Seehusen CN, Walker GA, Howell DR. Patient Characteristics Predictive of Immediate and Delayed Word Recall Performance Following Adolescent Concussion. Int J Sports Med. 2023 Jan;44(1):72-77. PubMed PMID: 36096148
  • Chesler KC, Howell DR, Khodaee M, Pierpoint LA, Comstock RD, Provance AJ. Are Different Aged Youth Skiers and Snowboarders Experiencing Different Injury Characteristics?. Wilderness Environ Med. 2023 Jan 5. [Epub ahead of print] PubMed PMID: 36610917
  • Wingerson MJ, Hunt DL, Wilson JC, Mannix RC, Meehan WP, Howell DR. Factors Associated with Symptom Resolution after Aerobic Exercise Intervention in Adolescent and Young Adults with Concussion. Med Sci Sports Exerc. 2023 Dec 13. [Epub ahead of print] PubMed PMID: 38109187
  • Howell DR, Wingerson MJ, Smulligan KL, Magliato S, Simon S, Wilson JC. Exercising More Than 150 min/wk After Concussion Is Associated With Sleep Quality Improvements. J Head Trauma Rehabil. 2023 Nov 6. [Epub ahead of print] PubMed PMID: 38032838
  • Willwerth SB, Lempke LB, Lugade V, Meehan WP, Howell DR, DeJong Lempke AF. Ankle Sprain History Does Not Significantly Alter Single- and Dual-Task Spatiotemporal Gait Mechanics. J Sport Rehabil. 2023 Nov 1;32(8):903-909. PubMed PMID: 37758257
  • Miller SM, Valovich McLeod TC, Zaslow TL, Wilson JC, Master CL, Snedden TR, Halstead ME, Grady MF, Fazekas ML, Santana JA, Coel RA, Howell DR. Utility of a Clinical Prediction Tool for Persisting Postconcussive Symptoms in a Multicenter Sample of Youth Athletes With Concussion: The Sport Concussion Outcomes in Pediatrics (SCOPE) Study. Am J Sports Med. 2023 Nov;51(13):3546-3553. PubMed PMID: 37794642
  • Patsimas T, Howell DR, Hovater W, Drexelius K, Selberg C, Armento A, Mayer S. Recovery in Hip Range of Motion in Young Flexibility Athletes 1 Year After Periacetabular Osteotomy. J Dance Med Sci. 2023 Oct 21;:1089313X231205101. [Epub ahead of print] PubMed PMID: 37864457
  • Little CC, Howell DR, Armento AM, Sweeney EA, Walker GA. Training volume recommendations and psychosocial outcomes in adolescent athletes. Phys Sportsmed. 2023 Oct;51(5):420-426. PubMed PMID: 36000411
  • Wingerson MJ, Baugh CM, Provance AJ, Armento A, Walker GA, Howell DR. Changes in Quality of Life, Sleep, and Physical Activity During COVID-19: A Longitudinal Study of Adolescent Athletes. J Athl Train. 2023 Oct 1;58(10):887-894. PubMed PMID: 36827615
  • Seehusen CN, Howell DR, Potter MN, Walker GA, Provance AJ. Athlete Burnout Is Associated With Perceived Likelihood of Future Injury Among Healthy Adolescent Athletes. Clin Pediatr (Phila). 2023 Oct;62(10):1269-1276. PubMed PMID: 36908104
  • Neely LM, Smulligan KL, Wingerson MJ, Seehusen CN, Simon SL, Wilson JC, Howell DR. The association between sleep and physical activity with persisting postconcussion symptoms among adolescent athletes. PM R. 2023 Sep;15(9):1122-1129. PubMed PMID: 36580488
  • Valovich McLeod TC, Snedden T, Halstead M, Wilson J, Master C, Grady M, Fazekas M, Santana J, Zaslow T, Miller S, Coel R, Howell DR. Influence of Personal and Injury-Related Factors Predicting Deficits in Quality of Life Domains Among Pediatric Athletes: Findings From the Sport Concussion Outcomes in Pediatrics Study. Clin J Sport Med. 2023 Sep 1;33(5):489-496. PubMed PMID: 36858431
  • Rademacher JG, Wingerson MJ, Smulligan KL, Little CC, Wilson JC, Howell DR. Early Moderate to Vigorous Physical Activity After Concussion Is Associated With Faster Symptom Resolution Time. J Sport Rehabil. 2023 Sep 1;32(7):790-796. PubMed PMID: 37295788
  • Armento A, Keeter C, Gagliardi A, Rossing H, Giachino C, VandenBerg C, Howell D, Albright J. Association of Grit With Postoperative Knee Outcomes and Physical Function After ACL Reconstruction in Adolescent Athletes. Am J Sports Med. 2023 Sep;51(11):2900-2907. PubMed PMID: 37525482
  • Wingerson MJ, Magliato SN, Smulligan KL, Wilson JC, Little CC, Howell DR. Predicting Time to Evaluation After Pediatric Concussion: Factors Affecting Specialty Concussion Care. Orthop J Sports Med. 2023 Aug;11(8):23259671231186430. PubMed PMID: 37655238
  • Dunne LAM, Cole MH, Cormack SJ, Howell DR, Johnston RD. Validity and Reliability of Methods to Assess Movement Deficiencies Following Concussion: A COSMIN Systematic Review. Sports Med Open. 2023 Aug 14;9(1):76. PubMed PMID: 37578611
  • Hart E, Howell DR, Brilliant A, O'Brien M, Meehan WP. Gymnastics and concussions: A retrospective chart review. Brain Inj. 2023 Jul 3;37(8):675-679. PubMed PMID: 37204184
  • Echemendia RJ, Brett BL, Broglio S, Davis GA, Giza CC, Guskiewicz KM, Harmon KG, Herring S, Howell DR, Master C, McCrea M, Naidu D, Patricios JS, Putukian M, Walton SR, Schneider KJ, Burma JS, Bruce JM. Sport concussion assessment tool™ - 6 (SCAT6). Br J Sports Med. 2023 Jun;57(11):622-631. PubMed PMID: 37316203
  • Echemendia RJ, Brett BL, Broglio S, Davis GA, Giza CC, Guskiewicz KM, Harmon KG, Herring S, Howell DR, Master CL, Valovich McLeod TC, McCrea M, Naidu D, Patricios J, Putukian M, Walton SR, Schneider KJ, Burma JS, Bruce JM. Introducing the Sport Concussion Assessment Tool 6 (SCAT6). Br J Sports Med. 2023 Jun;57(11):619-621. PubMed PMID: 37316207
  • Echemendia RJ, Burma JS, Bruce JM, Davis GA, Giza CC, Guskiewicz KM, Naidu D, Black AM, Broglio S, Kemp S, Patricios JS, Putukian M, Zemek R, Arango-Lasprilla JC, Bailey CM, Brett BL, Didehbani N, Gioia G, Herring SA, Howell D, Master CL, Valovich McLeod TC, Meehan WP 3rd, Premji Z, Salmon D, van Ierssel J, Bhathela N, Makdissi M, Walton SR, Kissick J, Pardini J, Schneider KJ. Acute evaluation of sport-related concussion and implications for the Sport Concussion Assessment Tool (SCAT6) for adults, adolescents and children: a systematic review. Br J Sports Med. 2023 Jun;57(11):722-735. PubMed PMID: 37316213
  • Echemendia RJ, Ahmed OH, Bailey CM, Bruce JM, Burma JS, Davis GA, Gioia G, Howell DR, Fuller GW, Master CL, van Ierssel J, Pardini J, Schneider KJ, Walton SR, Zemek R, Patricios JS. The Concussion Recognition Tool 6 (CRT6). Br J Sports Med. 2023 Jun;57(11):692-694. PubMed PMID: 37316201
  • Echemendia RJ, Ahmed OH, Bailey CM, Bruce JM, Burma JS, Davis GA, Gioia G, Howell D, Fuller GW, Master CL, van Ierssel J, Pardini J, Schneider KJ, Walton SR, Zemek R, Patricios J. Introducing the Concussion Recognition Tool 6 (CRT6). Br J Sports Med. 2023 Jun;57(11):689-691. PubMed PMID: 37316214
  • Liu RKK, Howell DR, Pierpoint LA, Little CC, Spittler J, Khodaee M, Provance A. SalterHarris fractures in paediatric skiers and snowboarders. Res Sports Med. 2023 May 24;:1-8. [Epub ahead of print] PubMed PMID: 37221842
  • Sweeney EA, Little CC, Wilson JC, Potter MN, Seehusen CN, Howell DR. Comparison of Braces for Treatment of Sever's Disease (Calcaneal Apophysitis) in Barefoot Athletes: A Randomized Clinical Trial. J Athl Train. 2023 May 1;58(5):437-444. PubMed PMID: 36094612
  • Schmitz B, Smulligan KL, Wingerson MJ, Walker GA, Wilson JC, Howell DR. Double Vision and Light Sensitivity Symptoms are Associated With Return-to-School Timing After Pediatric Concussion. Clin J Sport Med. 2023 May 1;33(3):264-269. PubMed PMID: 36395518
  • Magliato SN, Wingerson MJ, Seehusen CN, Smulligan KL, Simon SL, Wilson JC, Howell DR. Sleep Problems After Concussion Are Associated With Poor Balance and Persistent Postconcussion Symptoms. J Child Neurol. 2023 Mar;38(3-4):198-205. PubMed PMID: 37122172
  • Fryar C, Howell DR, Seehusen CN, Tilley D, Casey E, Sweeney EA. Link Between the Female Athlete Triad and Gymnastics-Related Injury in Retired Collegiate Gymnasts. Clin J Sport Med. 2023 Apr 25. [Epub ahead of print] PubMed PMID: 37185819
  • Chesler KC, Howell DR, Khodaee M, Pierpoint LA, Comstock RD, Provance AJ. Are Different Aged Youth Skiers and Snowboarders Experiencing Different Injury Characteristics?. Wilderness Environ Med. 2023 Mar;34(1):45-54. PubMed PMID: 36610917
  • Smulligan KL, Wingerson MJ, Little CC, Wilson JC, Howell DR. Early physical activity after concussion is associated with sleep quality but not dizziness among adolescent athletes. J Sci Med Sport. 2023 Mar;26(3):183-188. PubMed PMID: 36804710
  • Lempke LB, Oldham JR, Passalugo S, Willwerth SB, Berkstresser B, Wang F, Howell DR, Meehan WP. Influential Factors and Preliminary Reference Data for a Clinically Feasible, Functional Reaction Time Assessment: The Standardized Assessment of Reaction Time. J Athl Train. 2023 Feb 1;58(2):112-119. PubMed PMID: 35476022
  • Smulligan KL, Wingerson MJ, Seehusen CN, Little CC, Wilson JC, Howell DR. More Physical Activity Is Correlated With Reduction in Kinesiophobia for Adolescents With Persistent Symptoms After Concussion. J Sport Rehabil. 2023 Feb 1;32(2):196-202. PubMed PMID: 36220143
  • Barnes A, Smulligan K, Wingerson MJ, Little C, Lugade V, Wilson JC, Howell DR. A Multifaceted Approach to Interpreting Reaction Time Deficits After Adolescent Concussion. J Athl Train. 2023 Jan 27. [Epub ahead of print] PubMed PMID: 36701688
  • Wingerson MJ, Wilson JC, Seehusen CN, Walker GA, Howell DR. Patient Characteristics Predictive of Immediate and Delayed Word Recall Performance Following Adolescent Concussion. Int J Sports Med. 2023 Jan;44(1):72-77. PubMed PMID: 36096148
  • Reinking S, Seehusen CN, Walker GA, Wilson JC, Howell DR. Transitory kinesiophobia after sport-related concussion and its correlation with reaction time. J Sci Med Sport. 2022 Jan;25(1):20-24. PubMed PMID: 34404602
  • Smulligan KL, Wingerson MJ, Seehusen CN, Wilson JC, Howell DR. Postconcussion Dizziness Severity Predicts Daily Step Count during Recovery among Adolescent Athletes. Med Sci Sports Exerc. 2022 Jun 1;54(6):905-911. PubMed PMID: 35081096
  • Smulligan KL, Wingerson MJ, Seehusen CN, Wilson JC, Howell DR. Examining initial post-concussion dizziness and postural stability as predictors of time to symptom resolution. J Sci Med Sport. 2022 Jun;25(6):455-459. PubMed PMID: 35221201
  • Chen DL, Meyers RN, Provance AJ, Zynda AJ, Wagner KJ 3rd, Siegel SR, Howell DR, Miller SM. Early Sport Specialization and Past Injury in Competitive Youth Rock Climbers. Wilderness Environ Med. 2022 Jun;33(2):179-186. PubMed PMID: 35484015
  • Oldham JR, Howell D, Lanois C, Berkner P, Iverson GL, Mannix R, Meehan W. Neurocognitive functioning and symptoms across levels of collision and contact in male high school athletes. J Neurol Neurosurg Psychiatry. 2022 Apr 27. [Epub ahead of print] PubMed PMID: 35477889
  • Lempke LB, Oldham JR, Passalugo S, Willwerth SB, Berkstresser B, Wang F, Howell DR, Meehan WP. Influential Factors and Preliminary Reference Data for a Clinically Feasible, Functional Reaction Time Assessment: The Standardized Assessment of Reaction Time (StART). J Athl Train. 2022 Apr 27. [Epub ahead of print] PubMed PMID: 35476022
  • Howell DR, Wingerson MJ, Kirkwood MW, Grubenhoff JA, Wilson JC. Early aerobic exercise among adolescents at moderate/high risk for persistent post-concussion symptoms: A pilot randomized clinical trial. Phys Ther Sport. 2022 May;55:196-204. PubMed PMID: 35489100
  • Oldham JR, Lanois CJ, Caccese JB, Crenshaw JR, Knight CA, Berkstresser B, Wang F, Howell DR, Meehan WP 3rd, Buckley TA. Association Between Collision Sport Career Duration and Gait Performance in Male Collegiate Student-Athletes. Am J Sports Med. 2022 Jul;50(9):2526-2533. PubMed PMID: 35736366
  • Smulligan KL, Wingerson MJ, Seehusen CN, Smith AC, Walker GA, Wilson JC, Howell DR. Dizziness Is Associated With Neck/Shoulder Pain Following Pediatric Concussion. Clin J Sport Med. 2022 Nov 1;32(6):e562-e567. PubMed PMID: 36315824
  • Sidhar K, Baugh CM, Wilson JC, Spittler J, Walker GA, Armento AM, Howell DR. Socioeconomic status and injury history in adolescent athletes: Lower family affluence is associated with a history of concussion. J Clin Transl Res. 2022 Aug 29;8(4):292-298. PubMed PMID: 35975186
  • Lempke LB, Passalugo S, Baranker BT, Hunt D, Berkstresser B, Wang F, Meehan WP 3rd, Howell DR. Relationship and Latent Factors Between Clinical Concussion Assessments and the Functional Standardized Assessment of Reaction Time (StART). Clin J Sport Med. 2022 Nov 1;32(6):e591-e597. PubMed PMID: 35878887
  • Lopez-Flores R, Oldham J, Howell D, Rush J, Taylor A, Berkner P, Mannix R, Meehan WP 3rd. No Association Between Processing Speed and Risk of Sport-Related Concussion in Youth Soccer. Clin J Sport Med. 2022 Nov 1;32(6):e587-e590. PubMed PMID: 36315826
  • Jain D, Arbogast KB, McDonald CC, Podolak OE, Margulies SS, Metzger KB, Howell DR, Scheiman MM, Master CL. Eye Tracking Metrics Differences among Uninjured Adolescents and Those with Acute or Persistent Post-Concussion Symptoms. Optom Vis Sci. 2022 Aug 1;99(8):616-625. PubMed PMID: 35848958
  • Little CC, Howell DR, Armento AM, Sweeney EA, Walker GA. Training volume recommendations and psychosocial outcomes in adolescent athletes. Phys Sportsmed. 2022 Aug 24;:1-7. [Epub ahead of print] PubMed PMID: 36000411
  • Smulligan KL, Wingerson MJ, Seehusen CN, Little CC, Wilson JC, Howell DR. More Physical Activity Is Correlated With Reduction in Kinesiophobia for Adolescents With Persistent Symptoms After Concussion. J Sport Rehabil. 2022 Oct 11;:1-7. [Epub ahead of print] PubMed PMID: 36220143
  • Sweeney EA, Little CC, Wilson JC, Potter MN, Seehusen CN, Howell DR. Comparison of Braces for Treatment of Sever's Disease in Barefoot Athletes: A Randomized Clinical Trial. J Athl Train. 2022 Sep 12. [Epub ahead of print] PubMed PMID: 36094612
  • Schmitz B, Smulligan KL, Wingerson MJ, Walker GA, Wilson JC, Howell DR. Double Vision and Light Sensitivity Symptoms are Associated With Return-to-School Timing After Pediatric Concussion. Clin J Sport Med. 2022 Nov 17. [Epub ahead of print] PubMed PMID: 36395518
  • Neely LM, Smulligan KL, Wingerson MJ, Seehusen CN, Simon SL, Wilson JC, Howell DR. The association between sleep and physical activity with persisting post-concussion symptoms among adolescent athletes. PM R. 2022 Dec 29. [Epub ahead of print] PubMed PMID: 36580488
  • Smulligan KL, Wilson JC, Howell DR. Increased risk of musculoskeletal injuries after concussion. 2022. Operative Techniques in Sports Medicine. In press- accepted January 10, 2022.
  • Gagliardi AG, Quach V, Walker GA, Dahab K, Howell DR, Albright JC. High healing rate of stable femoral condyle osteochondritis dissecans in young patients placed in a hinged knee brace locked in extension. 2022. Journal of Pediatric Orthopedics B. In press, accepted May 18, 2022.
  • Armento AA, VanBaak K, Seehusen CN, Howell DR. Differences in Training and Health Characteristics between Trail Ultrarunners and Shorter Distance Runners. 2022. Wilderness & Environmental Medicine. In press, accepted December 1, 2022.
  • Walker GA, Seehusen CN, Armento A, Provance AJ, Wilson JC, Howell DR. Family Affluence Relationship to Sports Specialization in Youth Athletes. Clin Pediatr (Phila). 2021 Jan;60(1):50-55. PubMed PMID: 32781852
  • Büttner F, Howell D, Severini G, Doherty C, Blake C, Ryan J, Delahunt E. Using functional movement tests to investigate the presence of sensorimotor impairment in amateur athletes following sport-related concussion: A prospective, longitudinal study. Phys Ther Sport. 2021 Jan;47:105-113. PubMed PMID: 33242699
  • Armento A, Albright J, Gagliardi A, Daoud AK, Howell D, Mayer S. Patient expectations and perceived social support related to return to sport after anterior cruciate ligament reconstruction in adolescent athletes. Phys Ther Sport. 2021 Jan;47:72-77. PubMed PMID: 33197876
  • Howell DR, Southard J. The Molecular Pathophysiology of Concussion. Clin Sports Med. 2021 Jan;40(1):39-51. PubMed PMID: 33187612
  • Hunt DL, Oldham J, Aaron SE, Tan CO, Meehan WP 3rd, Howell DR. Dizziness, Psychosocial Function, and Postural Stability Following Sport-Related Concussion. Clin J Sport Med. 2021 Mar 9. [Epub ahead of print] PubMed PMID: 34009789
  • Armento A, VanBaak K, Seehusen CN, Sweeney EA, Wilson JC, Howell DR. Presence and Perceptions of Menstrual Dysfunction and Associated Quality of Life Measures Among High School Female Athletes. J Athl Train. 2021 Feb 24. [Epub ahead of print] PubMed PMID: 33626156
  • Walker GA, Wilson JC, Seehusen CN, Provance AJ, Howell DR. Is near point of convergence associated with symptom profiles or recovery in adolescents after concussion?. Vision Res. 2021 Jul;184:52-57. PubMed PMID: 33866266
  • Oldham JR, Master CL, Walker GA, Meehan WP 3rd, Howell DR. The Association between Baseline Eye Tracking Performance and Concussion Assessments in High School Football Players. Optom Vis Sci. 2021 Jul 1;98(7):826-832. PubMed PMID: 34328459
  • Walker GA, Wilson JC, Potter MN, Provance AJ, Kirkwood M, Howell DR. Age is associated with postural control performance following youth concussion. J Pediatr Rehabil Med. 2021;14(3):443-450. PubMed PMID: 34219677
  • Aaron SE, Hamner JW, Ozturk ED, Hunt DL, Iaccarino MA, Meehan WP 3rd, Howell DR, Tan CO. Cerebrovascular Neuroprotection after Acute Concussion in Adolescents. Ann Neurol. 2021 Jul;90(1):43-51. PubMed PMID: 33855730
  • Iverson GL, Howell DR, Van Patten R, Bloomfield P, Gardner AJ. Sport Concussion Assessment Tool-5th Edition (SCAT5): Normative Reference Values for the National Rugby League Women's Premiership. Front Sports Act Living. 2021;3:653743. PubMed PMID: 34124655
  • Howell DR, Seehusen CN, Wingerson MJ, Wilson JC, Lynall RC, Lugade V. Reliability and Minimal Detectable Change for a Smartphone-Based Motor-Cognitive Assessment: Implications for Concussion Management. J Appl Biomech. 2021 Jul 13;37(4):380-387. PubMed PMID: 34257159
  • Wilson JC, Carry PM, Daoud AK, Strunk S, Sweeney EA, Howell DR, Comstock RD. Single season re-injury risk after concussion and lower extremity injury among male, collision sport, high school athletes. J Sci Med Sport. 2021 Nov;24(11):1105-1109. PubMed PMID: 34074605
  • Howell DR, Seehusen CN, Walker GA, Reinking S, Wilson JC. Neuromuscular training after concussion to improve motor and psychosocial outcomes: A feasibility trial. Phys Ther Sport. 2021 Nov;52:132-139. PubMed PMID: 34482050
  • Howell DR, Hunt DL, Oldham JR, Aaron SE, Meehan WP 3rd, Tan CO. Postconcussion Exercise Volume Associations With Depression, Anxiety, and Dizziness Symptoms, and Postural Stability: Preliminary Findings. J Head Trauma Rehabil. 2021 Jul 26. [Epub ahead of print] PubMed PMID: 34320557
  • Krainin BM, Seehusen CN, Smulligan KL, Wingerson MJ, Wilson JC, Howell DR. Symptom and clinical recovery outcomes for pediatric concussion following early physical activity. J Neurosurg Pediatr. 2021 Sep 24;:1-8. [Epub ahead of print] PubMed PMID: 34560641
  • Murray NG, Moran R, Islas A, Pavilionis P, Szekely B, Alphonsa S, Howell D, Buckley T, Cipriani D. Sport-related concussion adopt a more conservative approach to straight path walking and turning during tandem gait. J Clin Transl Res. 2021 Aug 26;7(4):443-449. PubMed PMID: 34667890
  • Stockbower KA, Howell DR, Seehusen CN, Armento AM, Walker GA. Sport specialization, sleep, fatigue, and psychosocial ratings: do highly specialized athletes differ from their less specialized peers?. Phys Sportsmed. 2021 Jul 5;:1-6. [Epub ahead of print] PubMed PMID: 34171984
  • Seehusen CN, Wilson JC, Walker GA, Reinking SE, Howell DR. More Physical Activity after Concussion Is Associated with Faster Return to Play among Adolescents. Int J Environ Res Public Health. 2021 Jul 9;18(14). PubMed PMID: 34299824
  • Gagliardi AG, Howell DR, Stein JM, Monson MA, Pearce SS, Albright JC. Prediction of quadriceps tendon-patellar bone autograft diameter in adolescents with 2-dimensional magnetic resonance imaging and anthropometric measures. Skeletal Radiol. 2021 Jul 22. [Epub ahead of print] PubMed PMID: 34291324
  • Gowrisankaran S, Shah AS, Roberts TL, Wiecek E, Chinn RN, Hawash KK, O'Brien MJ, Howell DR, Meehan WP 3rd, Raghuram A. Association between post-concussion symptoms and oculomotor deficits among adolescents. Brain Inj. 2021 Aug 24;35(10):1218-1228. PubMed PMID: 34383619
  • Ozturk ED, Iaccarino MA, Hamner JW, Aaron SE, Hunt DL, Meehan WP 3rd, Howell DR, Tan CO. Executive dysfunction after multiple concussions is not related to cerebrovascular dysfunction. Physiol Meas. 2021 Sep 27;42(9). PubMed PMID: 34450608
  • Ferber A, Howell DR, Seehusen CN, Tilley D, Casey E, Sweeney EA. Intersection of surgical injuries and pain interference among former female collegiate gymnasts. PM R. 2021 Sep 9. [Epub ahead of print] PubMed PMID: 34498793
  • Smulligan KL, Wingerson MJ, Seehusen CN, Magliato SN, Wilson JC, Howell DR. Patient perception of dizziness and imbalance does not correlate with gait measures in adolescent athletes post-concussion. Gait Posture. 2021 Oct;90:289-294. PubMed PMID: 34564000
  • Howell DR, Hunt DL, Aaron SE, Hamner JW, Meehan WP 3rd, Tan CO. Association of Hemodynamic and Cerebrovascular Responses to Exercise With Symptom Severity in Adolescents and Young Adults With Concussion. Neurology. 2021 Nov 30;97(22):e2204-e2212. PubMed PMID: 34635563
  • Smulligan KL, Wilson JC, Seehusen CN, Wingerson MJ, Magliato SN, Howell DR. Post-Concussion Dizziness, Sleep Quality, and Postural Instability: A Cross-Sectional Investigation. J Athl Train. 2021 Oct 8. [Epub ahead of print] PubMed PMID: 34623439
  • Daisy CC, Varinos S, Howell DR, Kaplan K, Mannix R, Meehan WP, Wang F, Berkstresser B, Lee RS, Froehlich JW, Zurakowski D, Moses MA. Proteomic Discovery of Noninvasive Biomarkers Associated With Sport-Related Concussions. Neurology. 2021 Oct 21. [Epub ahead of print] PubMed PMID: 34675105
  • Narad ME, Epstein J, Peugh J, Barber Foss KD, Diekfuss JA, Bonnette S, Orban S, Yuan W, Dudley J, DiCesare CA, Reddington DL, Zhong W, Nissen KS, Shafer J, Avedesian JM, Slutsky-Ganesh AB, Lloyd RS, Howell D, Myer GD. The effect of subconcussive head impact exposure and jugular vein compression on behavioral and cognitive outcomes after a single season of high-school football: A prospective longitudinal trial. J Neurotrauma. 2021 Nov 13. [Epub ahead of print] PubMed PMID: 34779241
  • Kirkwood MW, Howell DR, Brooks BL, Wilson JC, Meehan Iii WP. The Nocebo Effect and Pediatric Concussion. J Sport Rehabil. 2021 May 28;30(6):837-843. PubMed PMID: 34050035
  • Fadell M, Howell DR, Stein J, McGraw M, Gagliardi A, Pearce S, Albright JC. Agreement between Arthroscopy and Saline Magnetic Resonance Shoulder Arthrography in Adolescent Patients - Evaluation of Location and Extent of Injury of Labral Tears. International Journal of Radiology and Imaging Techniques. 7(1): 075.
  • Potter MN, Howell DR, Dahab KS, Sweeney EA, Albright JC, Provance AJ. Sleep Quality and Quality of Life Among Healthy High School Athletes. Clin Pediatr (Phila). 2020 Feb;59(2):170-177. PubMed PMID: 31808366
  • Büttner F, Howell DR, Ardern CL, Doherty C, Blake C, Ryan J, Catena R, Chou LS, Fino P, Rochefort C, Sveistrup H, Parker T, Delahunt E. Concussed athletes walk slower than non-concussed athletes during cognitive-motor dual-task assessments but not during single-task assessments 2 months after sports concussion: a systematic review and meta-analysis using individual participant data. Br J Sports Med. 2020 Jan;54(2):94-101. PubMed PMID: 31331944
  • Gray M, Wilson JC, Potter M, Provance AJ, Howell DR. Female adolescents demonstrate greater oculomotor and vestibular dysfunction than male adolescents following concussion. Phys Ther Sport. 2020 Mar;42:68-74. PubMed PMID: 31935640
  • Kent M, Brilliant A, Erickson K, Meehan W, Howell D. Symptom Presentation After Concussion and Pre-existing Anxiety Among Youth Athletes. Int J Sports Med. 2020 Sep;41(10):682-687. PubMed PMID: 32492729
  • Provance AJ, Brewer MK, Seehusen CN, Younger BT, Howell DR. Athletic trainer employment, physician access and care delivery in secondary schools. Phys Sportsmed. 2020 Nov;48(4):407-411. PubMed PMID: 31961763
  • Oldham JR, Howell DR, Knight CA, Crenshaw JR, Buckley TA. Single-Task and Dual-Task Tandem Gait Performance Across Clinical Concussion Milestones in Collegiate Student-Athletes. Clin J Sport Med. 2020 Aug 17. [Epub ahead of print] PubMed PMID: 32852299
  • Meyers RN, Hobbs SL, Howell DR, Provance AJ. Are Adolescent Climbers Aware of the Most Common Youth Climbing Injury and Safe Training Practices?. Int J Environ Res Public Health. 2020 Jan 28;17(3). PubMed PMID: 32012970
  • Provance AJ, Howell DR, Potter MN, Wilson PE, D'Lauro AM, Wilson JC. Presence of Neck or Shoulder Pain Following Sport-Related Concussion Negatively Influences Recovery. J Child Neurol. 2020 Jun;35(7):456-462. PubMed PMID: 32192408
  • Kirkwood MW, Crossland MM, Howell DR, Wilson JC, Peterson RL. A Longitudinal Investigation of Symptom Recovery following Concussion in Youth Soccer. J Pediatr. 2020 May;220:207-213.e2. PubMed PMID: 32147217
  • Howell DR, Bonnette S, Diekfuss JA, Grooms DR, Myer GD, Meehan WP 3rd. Youth With Concussion Have Less Adaptable Gait Patterns Than Their Uninjured Peers: Implications for Concussion Management. J Orthop Sports Phys Ther. 2020 Aug;50(8):438-446. PubMed PMID: 32441192
  • Wilson JC, Kirkwood MW, Potter MN, Wilson PE, Provance AJ, Howell DR. Early physical activity and clinical outcomes following pediatric sport-related concussion. J Clin Transl Res. 2020 May 26;5(4):161-168. PubMed PMID: 33029564
  • Oldham JR, Howell DR, Bryk KN, Lanois CJ, Koerte IK, Meehan WP 3rd, Buckley TA. No differences in tandem gait performance between male and female athletes acutely post-concussion. J Sci Med Sport. 2020 Sep;23(9):814-819. PubMed PMID: 32336568
  • Bonnette S, Diekfuss JA, Grooms D, Myer GD, Meehan WP 3rd, Howell DR. Integrated linear and nonlinear trunk dynamics identify residual concussion deficits. Neurosci Lett. 2020 Jun 11;729:134975. PubMed PMID: 32298725
  • Sweeney EA, Howell DR, Potter MN, Gagliardi AG, Albright JC, Provance AJ. Comparison of pediatric sports fracture outcomes based on provider type. Phys Sportsmed. 2020 Apr 17;:1-6. [Epub ahead of print] PubMed PMID: 32283983
  • Howell DR, Kirkwood MW, Laker S, Wilson JC. Collision and Contact Sport Participation and Quality of Life Among Adolescent Athletes. J Athl Train. 2020 Nov 1;55(11):1174-1180. PubMed PMID: 33112960
  • Oldham JR, Howell DR, Bryk KN, Lanois CJ, Koerte IK, Meehan WP 3rd, Buckley TA. No differences in tandem gait performance between male and female athletes acutely post-concussion. J Sci Med Sport. 2020 Sep;23(9):814-819. PubMed PMID: 32336568
  • Oldham JR, Howell DR, Bryk KN, Lanois CJ, Koerte IK, Meehan WP 3rd, Buckley TA. No differences in tandem gait performance between male and female athletes acutely post-concussion. J Sci Med Sport. 2020 Sep;23(9):814-819. PubMed PMID: 32336568
  • Oldham JR, Howell DR, Bryk KN, Lanois CJ, Koerte IK, Meehan WP 3rd, Buckley TA. No differences in tandem gait performance between male and female athletes acutely post-concussion. J Sci Med Sport. 2020 Sep;23(9):814-819. PubMed PMID: 32336568
  • Oldham JR, Howell DR, Bryk KN, Lanois CJ, Koerte IK, Meehan WP 3rd, Buckley TA. No differences in tandem gait performance between male and female athletes acutely post-concussion. J Sci Med Sport. 2020 Sep;23(9):814-819. PubMed PMID: 32336568
  • Oldham JR, Howell DR, Bryk KN, Lanois CJ, Koerte IK, Meehan WP 3rd, Buckley TA. No differences in tandem gait performance between male and female athletes acutely post-concussion. J Sci Med Sport. 2020 Sep;23(9):814-819. PubMed PMID: 32336568
  • Oldham JR, Howell DR, Bryk KN, Lanois CJ, Koerte IK, Meehan WP 3rd, Buckley TA. No differences in tandem gait performance between male and female athletes acutely post-concussion. J Sci Med Sport. 2020 Sep;23(9):814-819. PubMed PMID: 32336568
  • Howell DR, Mayer AR, Master CL, Leddy J, Zemek R, Meier TB, Owen Yeates K, Arbogast KB, Mannix R, Meehan WP 3rd. Prognosis for Persistent Post Concussion Symptoms using a Multifaceted Objective Gait and Balance Assessment Approach. Gait Posture. 2020 Jun;79:53-59. PubMed PMID: 32361125
  • Büttner F, Howell DR, Doherty C, Blake C, Ryan J, Delahunt E. Headache- and Dizziness-Specific Health-Related Quality-of-Life Impairments Persist for 1 in 4 Amateur Athletes Who Are Cleared to Return to Sporting Activity Following Sport-Related Concussion: A Prospective Matched-Cohort Study. J Orthop Sports Phys Ther. 2020 Dec;50(12):692-701. PubMed PMID: 33256513
  • Pimentel R, Potter MN, Carollo JJ, Howell DR, Sweeney EA. Peak sagittal plane spine kinematics in female gymnasts with and without a history of low back pain. Clin Biomech (Bristol, Avon). 2020 Jun;76:105019. PubMed PMID: 32402899
  • Sweeney EA, Wilson JC, Potter MN, Dahab KS, Denay KL, Howell DR. Symptom profiles and postural control after concussion in female artistic athletes. Brain Inj. 2020 Jun 6;34(7):928-933. PubMed PMID: 32442387
  • Büttner F, Howell DR, Doherty C, Blake C, Ryan J, Delahunt E. Clinical Detection and Recovery of Vestibular and Oculomotor Impairments Among Amateur Athletes Following Sport-Related Concussion: A Prospective, Matched-Cohort Study. J Head Trauma Rehabil. 2020 Sep 2. [Epub ahead of print] PubMed PMID: 32898028
  • Charney MF, Howell DR, Lanois C, Starr TC, Liao H, Coello E, Breedlove KM, Meehan WP 3rd, Koerte I, Lin AP. Associations Between Neurochemistry and Gait Performance Following Concussion in Collegiate Athletes. J Head Trauma Rehabil. 2020 Sep Oct;35(5):342-353. PubMed PMID: 32881768
  • Meyers RN, Howell DR, Provance AJ. The Association of Finger Growth Plate Injury History and Speed Climbing in Youth Competition Climbers. Wilderness Environ Med. 2020 Dec;31(4):394-399. PubMed PMID: 32981830
  • Gagliardi AG, Walker GA, Dahab KS, Seehusen CN, Provance AJ, Albright JC, Howell DR. Sports participation volume and psychosocial outcomes among healthy high school athletes. J Clin Transl Res. 2020 Aug 1;6(2):54-60. PubMed PMID: 33263090
  • Van Deventer KA, Seehusen CN, Walker GA, Wilson JC, Howell DR. The diagnostic and prognostic utility of the dual-task tandem gait test for pediatric concussion. J Sport Health Sci. 2020 Aug 12. [Epub ahead of print] PubMed PMID: 32795624
  • Parikh HB, Gagliardi AG, Howell DR, Albright JC, Mandler TN. Femoral nerve catheters and limb strength asymmetry at 6 months after primary anterior cruciate ligament reconstruction in pediatric patients. Paediatr Anaesth. 2020 Oct;30(10):1109-1115. PubMed PMID: 32735731
  • Hänninen T, Parkkari J, Howell DR, Palola V, Seppänen A, Tuominen M, Iverson GL, Luoto TM. Reliability of the Sport Concussion Assessment Tool 5 baseline testing: A 2-week test-retest study. J Sci Med Sport. 2020 Aug 5. [Epub ahead of print] PubMed PMID: 32868203
  • Oldham JR, Meehan WP 3rd, Howell DR. Impaired eye tracking is associated with symptom severity but not dynamic postural control in adolescents following concussion. J Sport Health Sci. 2020 Oct 28. [Epub ahead of print] PubMed PMID: 33130092
  • Wingerson MJ, Seehusen CN, Walker G, Wilson JC, Howell DR. Clinical feasibility and utility of a dual-task tandem gait protocol for pediatric concussion management. J Athl Train. 2020 Nov 5. [Epub ahead of print] PubMed PMID: 33150416
  • Howell DR, Bonnette S, Diekfuss JA, Grooms DR, Myer GD, Wilson JC, Meehan WP 3rd. Dual-Task Gait Stability after Concussion and Subsequent Injury: An Exploratory Investigation. Sensors (Basel). 2020 Nov 5;20(21). PubMed PMID: 33167407
  • Sweeney E, Howell DR, Seehusen CN, Tilley D, Casey E. Health outcomes among former female collegiate gymnasts: the influence of sport specialization, concussion, and disordered eating. Phys Sportsmed. 2020 Nov 23;:1-7. [Epub ahead of print] PubMed PMID: 33186080
  • Lempke LB, Howell DR, Eckner JT, Lynall RC. Examination of Reaction Time Deficits Following Concussion: A Systematic Review and Meta-analysis. Sports Med. 2020 Jul;50(7):1341-1359. PubMed PMID: 32162242
  • Mannix R, Levy R, Zemek R, Yeates KO, Arbogast K, Meehan WP, Leddy J, Master C, Mayer AR, Howell DR, Meier TB. Fluid Biomarkers of Pediatric Mild Traumatic Brain Injury: A Systematic Review. J Neurotrauma. 2020 Oct 1;37(19):2029-2044. PubMed PMID: 32303159
  • Koerte IK, Schultz V, Sydnor VJ, Howell DR, Guenette JP, Dennis E, Kochsiek J, Kaufmann D, Sollmann N, Mondello S, Shenton ME, Lin AP. Sex-Related Differences in the Effects of Sports-Related Concussion: A Review. J Neuroimaging. 2020 Jul;30(4):387-409. PubMed PMID: 32533752
  • Bonke EM, Southard J, Buckley TA, Reinsberger C, Koerte IK, Howell DR. The effects of repetitive head impacts on postural control: A systematic review. J Sci Med Sport. 2020 Sep 9. [Epub ahead of print] PubMed PMID: 32948449
  • Oldham JR, Howell DR, Knight CA, Crenshaw JR, Buckley TA. Gait Performance Is Associated with Subsequent Lower Extremity Injury following Concussion. Med Sci Sports Exerc. 2020 Nov;52(11):2279-2285. PubMed PMID: 33064402
  • Shah AS, Raghuram A, Kaur K, Lipsn S, Shoshany T, Stevens R, O’Brien M, Howell DR, Fleischman K, Barnack D, Molind H, Kuemmerle K, Brodsky J. Specialty-specific Diagnoses in Pediatric Patients with Post-Concussion Syndrome: Experience from a Multi-disciplinary Concussion Clinic. Clinical Journal of Sport Medicine. In press, accepted July 20, 2020.
  • Scheiman M, Grady MF, Jenewein E, Shoge R, Podolak O, Howell DR, Master CL. Prevalence of Concussion-Related Vision Disorders in Children 9 to 17 years of age, 4 to 12 weeks Post Injury. Vision Research. In press, accepted September 3, 2020
  • Büttner F, Howell DR, Doherty C, Blake C, Ryan J, Delahunt E. Longitudinal vestibular and oculomotor impairments amongst amateur athletes one-year following sport-related concussion: a prospective follow-up. Journal of Head Trauma Rehabilitation. In press, accepted December 4, 2020
  • Büttner F, Howell DR, Doherty C, Blake C, Ryan J, Delahunt E. Participation in Pre-injury Level Sport One-Year Following Sport-Related Concussion: A Prospective, Matched Cohort Study. Journal of Science and Medicine in Sport. 2021. In press, accepted December 22, 2020
  • Howell DR, Hunt D, Aaron SE, Meehan III WP, Tan CO. Aerobic exercise volume, not prescription, influences post-concussion symptoms: A randomized clinical trial. 2021. In press, accepted December 22, 2020
  • Sweeney EA, Potter MN, MacDonald JP, Howell DR. Low back pain in female adolescent gymnasts and functional pain scales. Phys Ther Sport. 2019 Jul;38:66-70. PubMed PMID: 31055060
  • Gardner AJ, Howell DR, Iverson GL. National Rugby League match scheduling and rate of concussion. J Sci Med Sport. 2019 Jul;22(7):780-783. PubMed PMID: 30885613
  • Brown LA, Hall EE, Ketcham CJ, Patel K, Buckley TA, Howell DR, Vallabhajosula S. Turn Characteristics During Gait Differ With and Without a Cognitive Demand Among Collegiate Athletes. J Sport Rehabil. 2019 Mar 12;:1-20. [Epub ahead of print] PubMed PMID: 30860425
  • Raghuram A, Cotter S, Gowrisankaran S, Kanji J, Howell DR, Meehan WP 3rd, Shah AS. Post-Concussion: Receded Near Point of Convergence is Not Diagnostic of Convergence Insufficiency. Am J Ophthalmol. 2019 Apr 17. [Epub ahead of print] PubMed PMID: 31004592
  • Iverson GL, Cook NE, Howell DR, Collings LJ, Kusch C, Sun J, Virji-Babul N, Panenka WJ. Preseason Vestibular Ocular Motor Screening in Children and Adolescents. Clin J Sport Med. 2019 Jun 19. [Epub ahead of print] PubMed PMID: 31233433
  • Gardner AJ, Howell DR, Iverson GL. The association between multiple prior concussions, cognitive test scores, and symptom reporting in youth rugby league players. Brain Inj. 2019 Oct 29;:1-5. [Epub ahead of print] PubMed PMID: 31661635
  • Stewart W, Allinson K, Al-Sarraj S, Bachmeier C, Barlow K, Belli A, Burns MP, Carson A, Crawford F, Dams-O'Connor K, Diaz-Arrastia R, Dixon CE, Edlow BL, Ferguson S, Fischl B, Folkerth RD, Gentleman S, Giza CC, Grady MS, Helmy A, Herceg M, Holton JL, Howell D, Hutchinson PJ, Iacono D, Iglesias JE, Ikonomovic MD, Johnson VE, Keene CD, Kofler JK, Koliatsos VE, Lee EB, Levin H, Lifshitz J, Ling H, Loane DJ, Love S, Maas AI, Marklund N, Master CL, McElvenny DM, Meaney DF, Menon DK, Montine TJ, Mouzon B, Mufson EJ, Ojo JO, Prins M, Revesz T, Ritchie CW, Smith C, Sylvester R, Tang CY, Trojanowski JQ, Urankar K, Vink R, Wellington C, Wilde EA, Wilson L, Yeates K, Smith DH. Primum non nocere: a call for balance when reporting on CTE. Lancet Neurol. 2019 Mar;18(3):231-233. PubMed PMID: 30784550
  • Gagliardi AG, Carry PM, Traver JL, Parikh HB, Howell DR, Albright JC. Should We Rethink How to Define Success After ACL Surgery? Response. Am J Sports Med. 2019 Aug;47(10):NP59-NP60. PubMed PMID: 31365851
  • Chung Pin Yong JP, Lee JH, Howell DR, Meehan WP 3rd, Iverson GL, Gardner AJ. Effects of Exercise on Sport Concussion Assessment Tool-Third Edition Performance in Women. Clin J Sport Med. 2018 Jul 13. [Epub ahead of print] PubMed PMID: 30015637
  • Sweeney EA, Howell DR, James DA, Potter MN, Provance AJ. Returning to Sport After Gymnastics Injuries. Curr Sports Med Rep. 2018 Nov;17(11):376-390. PubMed PMID: 30407946
  • Stracciolini A, Amar-Dolan L, Howell DR, Alex T, Berkner P, J Sandstrom N, Peluso M, Kurtz M, Mannix R, Meehan WP 3rd. Female Sport Participation Effect on Long-Term Health-Related Quality of Life. Clin J Sport Med. 2018 Aug 8. [Epub ahead of print] PubMed PMID: 30095508
  • Sugimoto D, Jackson SS, Howell DR, Meehan WP 3rd, Stracciolini A. Association between training volume and lower extremity overuse injuries in young female athletes: implications for early sports specialization. Phys Sportsmed. 2018 Nov 7;:1-6. [Epub ahead of print] PubMed PMID: 30403911
  • Hänninen T, Parkkari J, Tuominen M, Öhman J, Howell DR, Iverson GL, Luoto TM. Sport Concussion Assessment Tool: Interpreting day-of-injury scores in professional ice hockey players. J Sci Med Sport. 2017 Dec 12. [Epub ahead of print] PubMed PMID: 29254676
  • O'Brien MJ, Howell DR, Pepin MJ, Meehan WP 3rd. Sport-Related Concussions: Symptom Recurrence After Return to Exercise. Orthop J Sports Med. 2017 Oct;5(10):2325967117732516. PubMed PMID: 29085846
  • Tocci NX, Howell DR, Sugimoto D, Dawkins C, Whited A, Bae D. The Effect of Stride Length and Lateral Pelvic Tilt on Elbow Torque in Youth Baseball Pitchers. J Appl Biomech. 2017 Oct 1;33(5):339-346. PubMed PMID: 28530502
  • Lee JH, Howell DR, Meehan WP 3rd, Iverson GL, Gardner AJ. Effects of Exercise on Sport Concussion Assessment Tool-Third Edition Performance in Professional Athletes. Orthop J Sports Med. 2017 Sep;5(9):2325967117727261. PubMed PMID: 28944251
  • Gardner AJ, Howell DR, Levi CR, Iverson GL. Evidence of Concussion Signs in National Rugby League Match Play: a Video Review and Validation Study. Sports Med Open. 2017 Aug 22;3(1):29. PubMed PMID: 28831759
  • Tocci N, Howell DR, Sugimoto D, Stracciolini A, Morse J, Meehan WP 3rd. Physical activity outside of organised sports is associated with functional performance. Acta Paediatr. 2017 May;106(5):825-830. PubMed PMID: 28160518
  • Yasen AL, Howell DR, Chou LS, Pazzaglia AM, Christie AD. Cortical and Physical Function following Mild Traumatic Brain Injury. Med Sci Sports Exerc. 2017 Jan 24. [Epub ahead of print] PubMed PMID: 28121798
  • Howell DR, Seehusen CN, Carry PM, Walker GA, Reinking S, Wilson JC. An 8-week neuromuscular training program after concussion reduces one- year subsequent injury risk: a randomized clinical trial. 2021. The American Journal of Sports Medicine. In press, accepted November 1, 2021.
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Professional Memberships

  • Pediatric Research in Sports Medicine (PRISM), President
  • National Athletic Trainers Association, Certified Member
  • American Society of Biomechanics, Member
  • International Society of Biomechanics, Member
  • American College of Sports Medicine, Member
  • Society for Neuroscience, Member

General Information

Graduate Schools:
  • MS, University of Oregon (2011)
  • PhD, University of Oregon (2014)
Undergraduate Schools:
  • BA/BS, Whitworth University (WA) (2008)
Fellowships:
  • Children's Hospital (Boston) Program, Pediatric Sports Medicine (2017)
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Department: Orthopedics
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