Current Research List


Ellis MJ, Leddy J, and Willer B. Multi-disciplinary management of athletes with post-concussion syndrome: an evolving pathophysiological approach. Front Neurol. 2016.

Baker JG, Leddy JJ, Darling SR, Shucard J, Makdissi M, Willer BS. Gender Differences in Recovery From Sports-Related Concussion in Adolescents. Clin Pediatr (Phila). 2016; 55(8).

Leddy JJ, Baker JG, Willer B. Active Rehabilitation of Concussion and Post-concussion Syndrome. Phys Med Rehabil Clin N Am. 2016; 27(2).

Hinds A, Jungquist CR, Leddy J, Seemant F, Baker J, & Willer B. Sleep disturbance in patients with chronic concussive effects. Concussion. 2016.

Hinds A, Leddy J, Freitas M, and Willer B. Heart Rate in Response to Exertion after Concussion. J Neurol Neurophysiol. 2016; 7(4).

Leddy J, Hinds AL, Sirica D and Willer B. The role of controlled exercise in concussion management. Physical Medicine and Rehabilitation. 2016.

Clausen M, Pendergast DR, Willer B, and Leddy JJ. Cerebral Blood Flow during Treadmill Exercise is a Marker of Physiological Post-Concussion Syndrome in Female Athletes. Journal of Head Trauma Rehabilitation. 2016; 31(3).

Matuszak J, McVige J, McPherson J, Willer B, and Leddy J. A Practical Concussion Physical Examination Toolbox: Evidence-based physical examination for concussion. Sports Health. 2016; 8(3).

Makki AY, Leddy J, Hinds AL, Baker JG, Palcuh R, Shucard J, and Willer B. School Attendance and Symptoms in Adolescents after Sport-Related Concussion (SRC). Global Pediatric Health. 2016; 3.

Baker JG, Leddy JJ, Darling SR, Rieger BP, Mashtare TL, Sharma T, Willer BS. Factors Associated With Problems for Adolescents Returning to the Classroom After Sport-Related Concussion. Clin Pediatr (Phila). 2015; 54(10).

Smith AM, Stuart MJ, Dodick DW, Roberts WO, Alford PW, Ashare AB, Aubrey M, Benson BW, Burke CJ, Dick R, Eickhoff C, Emery CA, Flashman LA, Gaz D, Giza CC, Greenwald RM, Herring S, Hoshizaki TB, Hudziak JJ, Huston J, Krause D, LaVoi N, Leaf M, Leddy JJ, MacPherson A, McKee AC, Mihalik JP, Moessner AM, Montelpare WJ, Putukian M, Schneider KJ, Szalkowski R, Tabrum M, Whitehead J, Wiese-Bjornstal DM. Ice Hockey Summit II: zero tolerance for head hits and fighting. Clin J Sport Med. 2015; 25(2).

Leddy JJ, Baker JG, Merchant A, Picano J, Gaile D, Matuszak J, Willer B. Brain or Strain? Symptoms Alone Do Not Distinguish Physiologic Concussion from Cervical/Vestibular Injury. Clinical Journal of Sports Medicine. 2015.

Darling S, Freitas M and Leddy J. Concussions: Return-to-Sport and Return-to-Learn Considerations. NYSAFP Journal. 2015; 4.

Evaluation of the Zurich Guidelines and Exercise Testing for Return to Play in Adolescents Following Concussion
Scott R. Darling, John J. Leddy, John G. Baker, Amy J. Williams, Anthony Surace, Jeffery Miecznikowski, and Barry Willer – Clin J Sport Med, Volume 24, Number 2, March 2014

Exercise Treatment for Postconcussion Syndrome: A Pilot Study of Changes in Functional Magnetic Resonance Imaging Activation, Physiology, and Symptoms
John J. Leddy, MD, FACSM, FACP; Jennifer L. Cox, PhD; John G. Baker, PhD; David S. Wack, PhD; David R. Pendergast, EdD; Robert Zivadinov, MD, PhD; Barry Willer, PhD
2012 Journal of Head Trauma Rehabilitation
Please contact Barry Willer, Ph.D.for the full copy of this article

Importance of ‘Return-to-Learn’ in Pediatric and Adolescent Concussion
Christina L. Master, MD; Gerard A. Gioia, PhD; John J. Leddy, MD; and Matthew F. Grady, MD
PEDIATRIC ANNALS 41:9, SEPTEMBER 2012

Rehabilitation Strategies for Prolonged Recovery in Pediatric and Adolescent Concussion
Paul G. Vidal, PT, MHSc, DPT, OCS, FAAOMPT; Arlene M. Goodman, MD; Amy Colin, MA, CCC-SLP; John J. Leddy, MD; and Matthew F. Grady, MD  PEDIATRIC ANNALS 41:9, SEPTEMBER 2012

Rehabilitation of Concussion and Post-concussion Syndrome
Leddy, J.J. ,Sandhu, J.G., Baker, J.G., Sodhi, V.S., and Willer, B.
(2012) Rehabilitation of concussion and post concussion syndrome. Sports Health: A Multidisciplinary Approach. 4 (2) 147-154

Return to Full Functioning after Graded Exercise Assessment and Progressive Exercise Treatment of Postconcussion Syndrome. 
Baker, J.G., Freitas, M.S., Leddy, J.J., Kozlowski, K.F., and Willer, B – Rehabilitation Research and Practice. Article ID 705309, 7 pages, 2012

Reliability of a Graded Exercise Test for Assessing Recovery From Concussion
John J. Leddy, John G. Baker, Karl Kozlowski, Leslie Bisson, and Barry Willer – Clin J Sport Med, Volume 21, Number 2, March 2011

A Preliminary Study of Subsymptom Threshold Exercise Training for Refractory Post-Concussion Syndrome
John J. Leddy, Karl Kozlowski, James P. Donnelly, David R. Pendergast, Leonard H. Epstein, and Barry Willer-Clin J Sport Med Volume 20, Number 1, January 2010

Intentional versus Unintentional Contact as a Mechanism of Injury in Youth Ice Hockey
Scott Darling, Douglas E Schaubel, John G Baker, John J Leddy, Leslie J Bisson, Barry Willer, Br J Sports Med 2010

Concussion and Sports
Barry Willer Ph.D. and John J. Leddy, M.D., NeuroRehabilitation 2007

Regulatory and Autoregulatory Physiological Dysfunction as a Primary Characteristic of Post Concussion Syndrome: Implications for Treatment
John J. Leddy, Karl Kozlowski, Michael Fung, David R. Pendergast, and Barry Willer, NeuroRehabilitation 2007

Use of the ICECI and ICD-10 E-coding Structures to Evaluate Causes of Head Injury and Concussion from Sport and Recreation Participation in a School Population
Karl F. Kozlowski, John J. Leddy, Machiko Tomita, Anne Bergen, and Barry Willer, NeuroRehabilitation 2007

Retest Reliability in Adolescents of a Computerized Neuropsychological Battery used to Assess Recovery from Concussion
Sidney J. Segalowitz, Patrick Mahaney, Diane L. Santesso, Leslie MacGregor, Jane Dywan, and Barry Willer, NeuroRehabilitation 2007

Treating Post Concussion Syndrome 
University at Buffalo Reporter, November 2006

A Population Based Investigation of Head Injuries and Symptoms of Concussion in Children and Adolescents in Schools 
Willer, B., Dumas, J., Hutson, A., and Leddy, J. (2004) Injury Prevention, 10 (3): 144-148

Injury Rates in House League, Select and Representative Youth Ice Hockey 
Willer, B, B. Kroetsch, S. Darling, A. Hutson, and J. Leddy (2005) Medicine and Science in Sport and Exercise, 37:10, pp 1658-1653

Body Checking and Youth Hockey
Willer, B and Leddy, J. (2006) Medicine and Science in Sport and Exercise. 38 (4) pp 800

Management of Concussion and Post Concussion Syndrome
Willer, B and Leddy, J. (2006) Current Treatment Options in Neurology, 8:5, pp 415- 426

A Proposal for an Evidenced Based Emergency Department Discharge Form for Mild Traumatic Brain Injury
Fung, M, B. Willer, D. Moreland, J. Leddy (2006) Brain Injury, 20: 9, 889-894

support@jfitzgeraldgroup.comCurrent Research List