MUSCLE ARCHITECTURE AND STRENGTH: ADAPTATIONS TO SHORT- TERM RESISTANCE TRAINING IN OLDER ADULTS
Abbreviated Journal Title
echo intensity; exercise; muscle quality; sarcopenia; ultrasonography; HUMAN SKELETAL-MUSCLE; MEN; WOMEN; HYPERTROPHY; SARCOPENIA; PERFORMANCE; ULTRASOUND; EXERCISE; FLEXORS; HUMANS; Clinical Neurology; Neurosciences
Introduction: Muscle morphology and architecture changes in response to 6 weeks of progressive resistance training were examined in healthy older adults. Methods: In this randomized, controlled design, muscle strength, quality, and architecture were evaluated with knee extension, DEXA, and ultrasound, respectively, in 25 older adults. Results: Resistance training resulted in significant increases in strength and muscle quality of 32% and 31%, respectively. Cross-sectional area of the vastus lateralis increased by 7.4% (p0.05). Physiological cross-sectional area (PCSA) of the thigh, a composite measure of muscle architecture, was related significantly to strength (r=0.57; p0.01) and demonstrated a significant interaction after training (p0.05). Change in PCSA of the vastus lateralis was associated with change in strength independent of any other measure. Conclusions: Six weeks of resistance training was effective at increasing strength, muscle quality, and muscle morphology in older adult men and women. Muscle Nerve 49:584-592, 2014
Muscle & Nerve
"MUSCLE ARCHITECTURE AND STRENGTH: ADAPTATIONS TO SHORT- TERM RESISTANCE TRAINING IN OLDER ADULTS" (2014). Faculty Bibliography 2010s. 6054.