Barclay Rachel, Coad Jane, Schraders Katie, Barnes Matthew J
School of Sport, Exercise & Nutrition, College of Health, Massey University, Palmerston North 4410, New Zealand.
School of Food Technology & Natural Sciences, College of Science, Massey University, Palmerston North 4410, New Zealand.
Nutrients. 2024 Dec 20;16(24):4389. doi: 10.3390/nu16244389.
Consuming collagen hydrolysate (CH) may improve symptoms of exercise-induced muscle damage (EIMD); however, its acute effects have not been compared to dairy protein (DP), the most commonly consumed form of protein supplement. Therefore, this study compared the effects of CH and DP on recovery from EIMD.
Thirty-three males consumed either CH ( = 11) or DP ( = 11), containing 25 g of protein, or an isoenergetic placebo ( = 11) immediately post-exercise and once daily for three days. Indices of EIMD were measured before and 30 min and 24, 48, and 72 h after 30 min of downhill running on a -15% slope at 80% of VO speed.
Downhill running induced significant EIMD, with time effects (all < 0.001) for the delayed onset of muscle soreness (visual analogue scale), countermovement jump height, isometric midthigh pull force, maximal voluntary isometric contraction force, running economy, and biomarkers of muscle damage (creatine kinase) and inflammation (interleukin-6, high-sensitivity C-reactive protein). However, no group or interaction effects (all > 0.05) were observed for any of the outcome measures.
These findings suggest that the post-exercise consumption of CH or DP does not improve indices of EIMD during the acute recovery period in recreationally active males.
摄入胶原蛋白水解物（CH）可能改善运动诱发的肌肉损伤（EIMD）症状；然而，其急性效应尚未与最常食用的蛋白质补充剂形式——乳蛋白（DP）进行比较。因此，本研究比较了CH和DP对EIMD恢复的影响。
33名男性在运动后立即食用含25克蛋白质的CH（n = 11）或DP（n = 11），或等能量安慰剂（n = 11），并连续三天每天食用一次。在以80%的VO速度在-15%坡度的下坡跑30分钟之前以及之后30分钟、24、48和72小时测量EIMD指标。
下坡跑诱发了显著的EIMD，在延迟性肌肉酸痛（视觉模拟评分）、反向纵跳高度、等长股中肌拉力、最大自主等长收缩力、跑步经济性以及肌肉损伤生物标志物（肌酸激酶）和炎症生物标志物（白细胞介素-6、高敏C反应蛋白）方面存在时间效应（所有p < 0.001）。然而，对于任何结局指标均未观察到组间效应或交互效应（所有p > 0.05）。
这些发现表明，在休闲活动男性的急性恢复期，运动后食用CH或DP并不能改善EIMD指标。
