BACKGROUND: The purpose of this study was to examine the effects of combined exercise training on growth hormone (GH), insulin-like growth factor-1 (IGF-1), and metabolic-syndrome factors and determine whether the changes in GH and/or IGF-1 induced by exercise correlate to the metabolic-syndrome factors in healthy middle-aged women (50-65 years of age). METHODS: The participants were randomly assigned into an aerobic-exercise training (walking + aerobics) group (AEG; n = 7), a combined-exercise training (walking + resistance training) group (CEG; n = 8), or a control group (CG; n = 7). Exercise sessions were performed 3 times per wk for 12 wk. The aerobic-exercise training consisted of walking and aerobics at 60-80% of heart-rate reserve, and the combined-exercise training consisted of walking and resistance exercise at 50-70% of 1-repetition maximum. RESULTS:GH, percentage body fat, fasting glucose, systolic blood pressure, and waist circumference were significantly improved in CEG (p < .05). However, GH induced by exercise training showed no correlation with metabolic-syndrome factors. IGF-1 was not significantly increased in either AEG or CEG compared with CG. CONCLUSION: These results indicate that the combined-exercise training produced more enhancement of GH, body composition, and metabolic-syndrome factors than did aerobic-exercise training.
RCT Entities:
BACKGROUND: The purpose of this study was to examine the effects of combined exercise training on growth hormone (GH), insulin-like growth factor-1 (IGF-1), and metabolic-syndrome factors and determine whether the changes in GH and/or IGF-1 induced by exercise correlate to the metabolic-syndrome factors in healthy middle-aged women (50-65 years of age). METHODS: The participants were randomly assigned into an aerobic-exercise training (walking + aerobics) group (AEG; n = 7), a combined-exercise training (walking + resistance training) group (CEG; n = 8), or a control group (CG; n = 7). Exercise sessions were performed 3 times per wk for 12 wk. The aerobic-exercise training consisted of walking and aerobics at 60-80% of heart-rate reserve, and the combined-exercise training consisted of walking and resistance exercise at 50-70% of 1-repetition maximum. RESULTS:GH, percentage body fat, fasting glucose, systolic blood pressure, and waist circumference were significantly improved in CEG (p < .05). However, GH induced by exercise training showed no correlation with metabolic-syndrome factors. IGF-1 was not significantly increased in either AEG or CEG compared with CG. CONCLUSION: These results indicate that the combined-exercise training produced more enhancement of GH, body composition, and metabolic-syndrome factors than did aerobic-exercise training.
Authors: Ling-Ling Lee; Caroline A Mulvaney; Yoko Kin Yoke Wong; Edwin Sy Chan; Michael C Watson; Hui-Hsin Lin Journal: Cochrane Database Syst Rev Date: 2021-02-24
Authors: Christine M Friedenreich; Heather K Neilson; Christy G Woolcott; Anne McTiernan; Qinggang Wang; Rachel Ballard-Barbash; Charlotte A Jones; Frank Z Stanczyk; Rollin F Brant; Yutaka Yasui; Melinda L Irwin; Kristin L Campbell; Margaret L McNeely; Kristina H Karvinen; Kerry S Courneya Journal: Endocr Relat Cancer Date: 2011-06-08 Impact factor: 5.678
Authors: Fabrício Eduardo Rossi; Ana Claudia S Fortaleza; Lucas M Neves; Tiego A Diniz; Marcela R de Castro; Camila Buonani; Jorge Mota; Ismael F Freitas Journal: J Exerc Rehabil Date: 2017-06-30