Can a 12-Minute Super-Slow Resistance Training Improve Lower Limb Function in Sarcopenic Older Adults? A Randomized Controlled Trial
Sun, Ruiqing Zhang, Qingwen
Sun, Ruiqing
Zhang, Qingwen
Abstract
Abstract This study explores the effectiveness of super-slow (SS) resistance training (RT) in improving motor unit recruitment and lower limb function in older adults with sarcopenia. It focuses on reducing session training time (12 minutes) by increasing the time under tension for one repetition (15 seconds). Method: Thirty-nine participants (age 70.21±5.51) were divided into SS1 (eccentric-5s and concentric-10s, 5/0/10/0), SS2 (10/0/5/0) and natural-speed (NS,1-2/0/1-2/0) RT groups, undergoing twice-weekly sessions for 12 weeks (30%-40%1RM to 70%-80%1RM). Average electromyography (aEMG) and integrated electromyography (iEMG) were tested pre- and post-intervention using the Italian BTS surface electromyography system. The muscles tested included bilaterally rectus femoris muscle (RF), bilaterally vastus medialis femoris muscle (VM), bilaterally vastus lateral femoris muscle (VL), and bilaterally biceps femoris long head (BCL). Lower limb function was assessed through gait speed (GS), time up-and-go (TUGT), 30-second sit-to-stand (STS), and 5-time sit-to-stand (FTSST) tests.
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Date
2024-09-20
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University of Wyoming Libraries
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Keywords
sarcopenia,super-slow resistance training,surface electromyography,lower limb function