Education

• Ph.D., Kinesiology, The Pennsylvania State University, 2002
• M.Ed., Athletic Training, The University of Virginia, 1998
• B.A., Sports Medicine, The College of Wooster, 1997

Interests & Expertise

Prevention, treatment, and rehabilitation of lower extremity injuries in physically active individuals. Examples include Patellofemoral Pain, Iliotibial Band Syndrome, ACL injury, etc. Interests include the functional alignment of the lower extremity, and gait biomechanics during running. From the rehabilitation perspective, examining patient outcomes following rehabilitation interventions for Patellofemoral Pain is also an interest. Ongoing studies include examining the role of the hip in controlling lower extremity motion, and the development of rehabilitation exercises to improve the neuromuscular control of the hip during physical activity.

Recent Publications

Bazett-Jones, D., Cobb, S.C., Joshi, M., Cashin, S.C., & Earl, J.E. (2011). Normalizing Hip Muscle Strength: Establishing Body-Size-Independent Measurements. Archives of Physical Medicine and Rehabilitation, 92(1), 76-82.

Earl, J.E., & Hoch, A.Z. (2011). A proximal strengthening program improves pain, function, and biomechanics in women with patellofemoral pain syndrome. American Journal of Sports Medicine, 39(1), 154-163.

McBeth, J.M., Earl, J.E., Cobb, S.C., & Huddleston, W.E. (In press). Hip Muscle Activity During Three Side-Lying Hip Strengthening Exercises in Distance Runners. J Ath Training. February 2011.

Geiser, C.F., Earl, J.E., & O’Connor, K.M. (2010). Hip fatigue alters frontal plane knee mechanics during unilateral tasks. Medicine and Science in Sports and Exercise, 42(3), 535-545.

Snyder, K.R., Earl, J.E., O’Connor, K.M., & Ebersole, K.T. (2009). Resistance training is accompanied by increases in hip strength and changes in lower extremity biomechanics during running. Clinical Biomechanics, 24, 26-34.

Earl, J.E., & Vetter, C.S. (2007). Patellofemoral Pain. In S. Dugan (Ed.), Physical Medicine and Rehabilitation Clinics of North America. Gender Specific Medicine: The Physiatrist and Women's Health. Volume 18, Number 3. (pp. 439-458). Elsevier.

Earl, J.E., Monteiro, S.K., & Snyder, K.R. (2007). Differences in lower extremity kinematics between a bilateral drop-landing and a single leg stepdown. Journal of Orthopaedic and Sports Physical Therapy, 37(5), 243-250.

O’Connor, K.M., Coventry, E., & Hart, B.A., Earl, J.E., Ebersole, K.T. (2006). The effect of lower extremity fatigue on shock attenuation during single-leg landing. Clinical Biomechanics, 21, 1090-1097.

Earl, J.E., Hertel, J., & Denegar, C.R. (2005). Relationships among patterns of dynamic malalignment, muscle activation, joint motion, and patellofemoral pain syndrome. Journal of Sport Rehabilitation, 14, 215-233.

Earl, J.E. (2005). Gluteus medius activity during three variations of isometric single leg stance. Journal of Sport Rehabilitation, 14(1), 1-11.

Hertel, J., Sloss, B.R., & Earl, J.E. (2005). Effect of foot orthotics on quadriceps and gluteus medius EMG activity during selected exercises. Archives of Physical Medicine and Rehabilitation, 86(1), 26-30.

Earl, J.E., Piazza, S.J., & Hertel, J. (2004). Changes in range of motion and quadriceps EMG activity when wearing the Protonics knee brace. Journal of Athletic Training, 39, 44-49.

Hertel, J., Earl, J.E., Tsang, K., & Miller, S.J. (2004). Combining isometric knee extension exercises with hip adduction or abduction does not increase quadriceps EMG activity. British Journal of Sports Medicine, 382, 210-213.

Earl, J.E. (2002). Mechanical etiology, recognition, and treatment of spondylolisthesis. Physical Therapy in Sport, 3, 79-87.

Earl, J.E., Hertel, J. (2001). Lower extremity muscle activation during the Star Excursion Balance Tests. Journal of Sport Rehabilitation, 10(2), 93-105.

Earl, J.E., Schmitz, R.J., & Arnold, B.L. (2001). Quadriceps activity during a dynamic mini-squat exercise with and without isometric hip adduction. Electromyography and Kinesiology, 11, 381-386.