OBJECTIVE We studied the effects of loss of ovarian function (ovariectomy) on muscle mass of gastrocnemius and the mRNA levels of IGF-1, atrogin-1, MuRF-1, and myostatin in an experimental model of rheumatoid arthritis in rats. METHODS We randomly allocated 24 female Wistar rats (9 weeks, 195.3 ± 17.4 grams) into four groups: control (CT-Sham; n = 6); rheumatoid arthritis (RA; n = 6); ovariec...

This study aims to quantify how habitual foot strike patterns would affect ankle kinetics and the behavior mechanics of medial gastrocnemius–tendon unit (MTU) during running. A total 14 runners with non-rearfoot (NRFS) 15 rearfoot (RFS) ran on an instrumented treadmill at a speed 9 km/h. An ultrasound system motion capture were synchronously triggered collect images gastrocnemius (MG) marker po...

CONTEXT The medial head of the gastrocnemius is the third most commonly strained muscle in elite athletes after the biceps femoris and rectus femoris. The differential diagnosis of posterior calf injury includes musculoskeletal and nonmusculoskeletal causes. Classically, delineation of these injuries from one another relied primarily on historical features and physical examination findings. The...

OBJECTIVE To compare the effectiveness of no exercise with prehabilitation (exercise before hindlimb unweighting [HLU]) versus rehabilitation (exercise given after HLU) on gait function and skeletal muscle mass and force. DESIGN Randomized controlled trial. SETTING Animal laboratory. ANIMALS Male-specific, pathogen-free Fisher344/Brown Norway rats (N=149). Groups consisted of adult and ol...

Exposure of the prosthesis is one of the problems encountered after arthroplasty of the knee. Eight patients with nine exposed prostheses have been treated by using a gastrocnemius myocutaneous flap to provide cover. This preserved the prosthesis and closed the joint in six of the eight patients.l The factors leading to breakdown of the wound are discussed and the anatomy of the gastrocnemius m...

Acupunct Med Month 2017 Vol 0 No 0 Figure 1 Shear wave elastography of the gastrocnemius muscle in a longitudinal plane. Rectangular field of view demonstrating good quality shear-wave elastogram as indicated by homogeneously distributed blue colour-coded muscle (A) and evenly spaced propagation waves (B). Quantitative analysis of gastrocnemius muscle stiffness was achieved by placing the small...

1. It has been observed previously that gastrocnemius muscles from rats rehabilitated after early nutritional stress have low endurance and oxidative capacity (Raju, 1974). 2. Exercise during rehabilitation reversed the effects of early malnutrition on muscle function and metabolism. The swimming performance of rehabilitated rats was poor and exercise during rehabilitation improved it. 3. The s...