Department for Nutrition, Institute for Sports and Sports Science, University of Freiburg, Schwarzwaldstraße 175, 79117 Freiburg, Germany.
Nutrients. 2019 Apr 20;11(4):892. doi: 10.3390/nu11040892.
The aim was to investigate the effects of resistance exercise combined with supplementation of specific collagen peptides (SCP) on body composition and muscle strength in premenopausal women. In a double-blind, placebo-controlled, randomized trial 77 premenopausal women completed a 12-week resistance training (3 day/week) and ingested 15 g of SCP or placebo on a daily basis. Changes in body composition were determined by bioelectrical impedance analysis (BIA) and muscular strength by isometric strength testing. The treatment group (TG) significantly increased ( < 0.001) their percentage of fat-free mass. Although the control group (CG) also showed a significant ( < 0.01) gain in fat-free mass from pre- to post-training, the increase in the TG was significantly higher in an RMANOVA analysis ( < 0.05). Regarding the change in percentage body fat, a significant decline was observed in both TG ( < 0.001) and CG ( < 0.01), with a significantly higher reduction in the TG ( < 0.05). Subjects receiving 15 g of collagen peptides daily also showed a significantly higher gain in hand-grip strength compared to those performing resistance training only ( < 0.05). In both groups, the gain in leg strength (TG = < 0.001; CG = < 0.01) was significant after 12 weeks with a more pronounced effect in the treatment group. In conclusion, resistance training in combination with supplementation of SCP induced a significantly higher increase in fat-free mass and hand-grip strength than resistance training and placebo supplementation. In addition, there was a significantly higher loss in fat mass and a more pronounced increase in leg strength in the treatment group compared to the control group.
研究抗阻运动联合补充特定胶原蛋白肽（SCP）对绝经前妇女身体成分和肌肉力量的影响。在一项双盲、安慰剂对照、随机试验中，77 名绝经前妇女完成了 12 周的抗阻训练（每周 3 天），并每天摄入 15 克 SCP 或安慰剂。通过生物电阻抗分析（BIA）确定身体成分的变化，通过等长力量测试确定肌肉力量的变化。治疗组（TG）的去脂体重百分比显著增加（<0.001）。尽管对照组（CG）在训练前后也显示出显著的（<0.01）去脂体重增加，但在 RMANOVA 分析中，TG 的增加明显更高（<0.05）。关于体脂百分比的变化，TG（<0.001）和 CG（<0.01）均观察到显著下降，TG 的下降幅度明显更高（<0.05）。每天接受 15 克胶原蛋白肽的受试者的握力也比仅进行抗阻训练的受试者显著增加（<0.05）。在两组中，12 周后腿部力量的增加（TG = <0.001；CG = <0.01）均具有统计学意义，且治疗组的效果更为明显。结论：抗阻训练联合 SCP 补充可显著增加去脂体重和握力，效果优于抗阻训练和安慰剂补充。此外，与对照组相比，治疗组的体脂减少量显著增加，腿部力量增加更为明显。
