John Parry Gerber

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Strength deficits in persons with Parkinson's disease (PD) have been identified as a contributor to bradykinesia. However, there is little research that examines the effect of resistance training on muscle size, muscle force production, and mobility in persons with PD. The purpose of this exploratory study was to examine, in persons with PD, the changes in(More)
Persons with Parkinson disease (PD) often demonstrate bradykinesia during mobility tasks. Bradykinesia combined with other PD-related movement deficits may contribute to self-reported reductions in quality of life. At this time, no studies have examined the effects of resistance exercise as an intervention to reduce bradykinesia and improve self-reported(More)
The purpose of this study was to examine a young athletic population to update the data regarding epidemiology and disability associated with ankle injuries. At the United States Military Academy, all cadets presenting with ankle injuries during a 2-month period were included in this prospective observational study. The initial evaluation included an(More)
BACKGROUND Anterior compartment pressures of the leg as well as kinematic and kinetic measures are significantly influenced by running technique. It is unknown whether adopting a forefoot strike technique will decrease the pain and disability associated with chronic exertional compartment syndrome (CECS) in hindfoot strike runners. HYPOTHESIS For people(More)
OBJECTIVE To examine the effect of high-force eccentric resistance exercise on measures of muscle damage and injury in persons with mild to moderate Parkinson's disease (PD). DESIGN Before-after trial. SETTING Tertiary care center clinical laboratory. PARTICIPANTS Ten persons with PD (Hoehn and Yahr Staging Scale, stage 1-3). INTERVENTION(More)
BACKGROUND AND PURPOSE The authors previously reported that focused eccentric resistance training during the first 15 weeks following anterior cruciate ligament reconstruction (ACL-R) induced greater short-term increases in muscle volume, strength, and measures of function relative to standard rehabilitation. The purpose of this study was to evaluate the(More)
STUDY DESIGN Randomized, matched design. BACKGROUND Optimal rehabilitation following anterior cruciate ligament reconstruction (ACL-R) requires safe and effective interventions. Negative work exercise (via eccentric muscle activity) has the potential to be highly effective at producing large quadriceps size and strength gains early after ACL-R. The(More)
BACKGROUND Bracing after anterior cruciate ligament reconstruction is expensive and is not proven to prevent injuries or influence outcomes. PURPOSE To determine whether postoperative functional knee bracing influences outcomes. STUDY DESIGN Prospective, randomized, multicenter clinical trial. METHODS One hundred volunteers from the 3 US service(More)
BACKGROUND Thigh muscle atrophy is a major impairment that occurs early after reconstruction of the anterior cruciate ligament and persists for several years. Eccentric resistance training has the potential to induce considerable gains in muscle size and strength that could prove beneficial during postoperative rehabilitation. The purpose of this study was(More)
STUDY DESIGN Clinical Measurement, Correlation, Reliability OBJECTIVES To assess the relationship between the Single Leg Balance (SLB), modified Balance Error Scoring System (mBESS), and modified Star Excursion Balance (mSEBT) tests and secondarily to assess inter-rater and test-retest reliability of these tests. BACKGROUND Ankle sprains often result in(More)