The authors sought to determine whether consuming collagen peptides (CP) enhances musculoskeletal recovery of connective tissues following a damaging exercise bout. Resistance-trained males consumed 15 g/day of CP (n = 7) or placebo (n = 8), and after 7 days, maximal voluntary isometric contraction (MVIC), countermovement jump height, soreness, and collagen turnover were examined. Five sets of 20 drop jumps were performed and outcome measures were collected 24, 48, and 120 hr postexercise. Countermovement jump height was maintained in the CP group at 24 hr (PRE = 39.9 ± 8.8 cm vs. 24 hr = 37.9 ± 8.9 cm, p = .102), whereas the CP group experienced a significant decline at 24 hr (PRE = 40.4 ± 7.9 cm vs. 24 hr = 35.5 ± 6.4 cm, p = .001; d = 0.32). In both groups, muscle soreness was significantly higher than PRE at 24 hr (p = .001) and 48 hr (p = .018) but not at 120 hr (p > .05). MVIC in both legs showed a significant time effect (left: p = .007; right: p = .010) over the 5-day postexercise period. Neither collagen biomarker changed significantly at any time point. CP supplementation attenuated performance decline 24 hr following muscle damage. Acute consumption of CP may provide a performance benefit the day following a bout of damaging exercise in resistance-trained males.

作者试图确定消耗胶原蛋白肽 (CP) 是否会在破坏性运动回合后增强结缔组织的肌肉骨骼恢复。接受抗阻训练的男性每天 服用15 克 CP（n  = 7）或安慰剂（n = 8），7 天后，检查最大自愿等长收缩 (MVIC)、反向跳跃高度、酸痛和胶原蛋白更新。进行了五组 20 次跳高，并在运动后 24、48 和 120 小时收集结果测量值。CP 组在 24 小时时保持 反向运动跳跃高度（PRE = 39.9 ± 8.8 cm vs. 24 小时 = 37.9 ± 8.9 cm，p = .102），而 CP 组在 24 小时时经历显着下降（PRE = 40.4 ± 7.9 厘米与 24 小时 = 35.5 ± 6.4 厘米，p = .001; d  = 0.32）。在两组中，肌肉酸痛在 24 小时 ( p  = .001) 和 48 小时 ( p  = .018)时显着高于 PRE，但在 120 小时 ( p  > .05) 则没有。运动后 5 天，两条腿的 MVIC 显示出显着的时间效应（左：p  = .007；右：p  = .010）。在任何时间点，胶原生物标志物都没有显着变化。CP 补充剂可在肌肉损伤后 24 小时内减轻性能下降。在受过阻力训练的男性进行一次破坏性运动后，急性消耗 CP 可能会在第二天提供性能益处。