Medicine and Health Sciences Commons^™

Influence Of Knee Flexion Angle And Age On Triceps Surae Muscle Fatigue During Heel Raises, Kim Hébert-Losier, Anthony G. Schneiders, José A. García, S. John Sullivan, Guy G. Simoneau

Physical Therapy Faculty Research and Publications

Hébert-Losier, K, Schneiders, AG, García, JA, Sullivan, SJ, and Simoneau, GG. Influence of knee flexion angle and age on triceps surae muscle fatigue during heel raises. J Strength Cond Res 26(11): 3134–3147, 2012—The triceps surae (TS) muscle-tendon unit is 1 of the most commonly injured in elite and recreational athletes, with a high prevalence in middle-aged adults. The performance of maximal numbers of unilateral heel raises is used to assess, train, and rehabilitate TS endurance and conventionally prescribed in 0° knee flexion (KF) for the gastrocnemius and 45° for the soleus (SOL). However, the extent of muscle selectivity conferred through …

Influence Of Upper Extremity Assistance On Lower Extremity Force Application Symmetry In Individuals Post–Hip Fracture During The Sit-To-Stand Task, Janet A. Kneiss, Jeff R. Houck, Susan A. Bukata, J. Edward Puzas

Faculty Publications - College of Physical Therapy

STUDY DESIGN: Controlled laboratory study using a cross-sectional design.

OBJECTIVES: To compare lower extremity force applications during a sit-to-stand (STS) task with and without upper extremity assistance in older individuals post–hip fracture to those of age matched controls.

BACKGROUND: A recent study documented the dependence on upper extremity assistance and the uninvolved lower limb during an STS task in individuals post–hip fracture. This study extends this work by examining the effect of upper extremity assistance on symmetry of lower extremity force applications.

METHODS: Twenty-eight community-dwelling elderly subjects, 14 who had recovered from a hip fracture and 14 controls, participated in …