OBJECTIVE: To determine the effect of residence-based, resistance exercise training (RET) on affected skeletal muscle size and glucose tolerance after long-standing, complete spinal cord injury (SCI). DESIGN: Before-after trial. SETTING: University laboratory trial. PARTICIPANTS: Five men with chronic, complete SCI (C5-T9). INTERVENTION: Magnetic resonance images of the thighs and an oral glucose tolerance test were performed before and after RET. Subjects performed RET with both thighs, 2 d/wk for 4 sets of 10 unilateral, dynamic knee extensions for 12 weeks. Neuromuscular electric stimulation induced RET by activating the knee extensors. MAIN OUTCOME MEASURES: Quadriceps femoris muscle cross-sectional area (CSA), plasma glucose, and insulin concentrations were measured before and after RET. Results Skeletal muscle CSA increased by 35% in the right quadriceps femoris (from 32.6 cm2 to 44.0 cm2) and by 39% in the left quadriceps femoris (from 34.6 cm2 to 47.9 cm2) as a result of training (P < .05). There were no significant changes in blood glucose or insulin after training. However, a trend for a reduction in plasma glucose levels was observed (P = .074). Conclusions Affected skeletal muscle can achieve substantial hypertrophy years after SCI with resistance exercise. Furthermore, our results suggest that this type of training may enhance glucose disposal.
OBJECTIVE: To determine the effect of residence-based, resistance exercise training (RET) on affected skeletal muscle size and glucose tolerance after long-standing, complete spinal cord injury (SCI). DESIGN: Before-after trial. SETTING: University laboratory trial. PARTICIPANTS: Five men with chronic, complete SCI (C5-T9). INTERVENTION: Magnetic resonance images of the thighs and an oral glucose tolerance test were performed before and after RET. Subjects performed RET with both thighs, 2 d/wk for 4 sets of 10 unilateral, dynamic knee extensions for 12 weeks. Neuromuscular electric stimulation induced RET by activating the knee extensors. MAIN OUTCOME MEASURES: Quadriceps femoris muscle cross-sectional area (CSA), plasma glucose, and insulin concentrations were measured before and after RET. Results Skeletal muscle CSA increased by 35% in the right quadriceps femoris (from 32.6 cm2 to 44.0 cm2) and by 39% in the left quadriceps femoris (from 34.6 cm2 to 47.9 cm2) as a result of training (P < .05). There were no significant changes in blood glucose or insulin after training. However, a trend for a reduction in plasma glucose levels was observed (P = .074). Conclusions Affected skeletal muscle can achieve substantial hypertrophy years after SCI with resistance exercise. Furthermore, our results suggest that this type of training may enhance glucose disposal.
Authors: Ashraf S Gorgey; Oksana Witt; Laura O'Brien; Christopher Cardozo; Qun Chen; Edward J Lesnefsky; Zachary A Graham Journal: Eur J Appl Physiol Date: 2018-12-11 Impact factor: 3.078
Authors: Kathleen F Carlson; Timothy J Wilt; Brent C Taylor; Gary D Goldish; Catherine B Niewoehner; Tatyana A Shamliyan; Robert L Kane Journal: J Spinal Cord Med Date: 2009 Impact factor: 1.985