水解胶原蛋白补充对休闲三项全能运动员下半身僵硬的影响

Q3 Medicine
M. Nuñez-Lisboa, A. Dewolf, Marjorie Cataldo, M. Castro-Sepulveda, H. Zbinden-Foncea, J. Cancino-López
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引用次数: 0

摘要

背景:肌强直与肌肉和肌腱的胶原蛋白含量有关,可以通过垂直刚度(kvert)的变化和由此产生的时空参数(开关-地面不对称和着陆-起飞不对称)的修改来估计跑步过程中的肌强直。补充胶原蛋白中的氨基酸,如脯氨酸、甘氨酸和羟基脯氨酸,再加上抗坏血酸,可以改善胶原蛋白的合成,并可能提高机械强度和硬度。目的:确定在娱乐性铁人三项运动员的跑步过程中,补充水解胶原蛋白(HC)是否会增加kvert并改善时空参数。方法:将9例活动期男性(体重68.4±5.7 kg,身高171.8±5.4 cm,年龄32.5±4.1岁,Vo2max 53.15±2.19 mL/kg/min)随机分为胶原组(CollG,n=5)和对照组(CG,n=4)。参与者被补充15g HC(CollG)或15g安慰剂(CG;麦芽糊精)4周,每周3次。补充一小时后,两组参与者被要求进行四次短距离冲刺,以进一步刺激胶原蛋白合成。在4.44 m.s-1、5.55 m.s-1和6.66 m.s-1的运行过程中记录地面反作用力,以评估kvert和时空步长参数。结果:两组大鼠颈动脉和CG的kvert随速度的增加(4.44~6.66ms-1)分别从24.8±2.7增加到53.7±16.5N/m和从25.1增加到49.8N/m(P<0.0001);然而,补充期前后各组之间没有差异。因此,各组之间跑步的时空参数也相似。结论:补充HC四周并不能改善娱乐性铁人三项运动员的弹跳机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hydrolyzed Collagen Supplementation on Lower Body Stiffness in Recreational Triathletes
Background: Myotendinous stiffness is related to the collagen content of the muscle and tendon, and can be estimated during running by changes in vertical stiffness (kvert) and the resulting modifications of the spatiotemporal parameters (on-off ground asymmetry and landing-takeoff asymmetry). Supplementation with amino acids found in collagen, such as proline, glycine, and hydroxyl proline, combined with ascorbic acid, improve collagen synthesis and potentially result in improved mechanical strength and stiffness. Objectives: To determine if hydrolyzed collagen (HC) supplementation increases kvert and improves the spatiotemporal parameters during running in recreational triathletes. Methods: Nine active males (weight; 68.4 ± 5.7 kg, height; 171.8 ± 5.4 cm, age; 32.5 ± 4.1 years; Vo2max; 53.15 ± 2.19 mL/kg/min) were randomly distributed into a collagen group (CollG, n = 5) and a control group (CG, n = 4). Participants were supplemented for 4 weeks with 15g HC (CollG) or 15g placebo (CG; maltodextrin), 3 times per week. One hour after supplementation, the participants of both groups were asked to perform four repetitions of short sprints to further stimulate collagen synthesis. The ground reaction forces were recorded during running at 4.44 m s-1, 5.55 m.s-1, and 6.66 m.s-1 for assessment of kvert and the spatiotemporal step parameters. Results: Both groups increased kvert with speed (4.44 - 6.66 m s-1) from 24.8 ± 2.7 to 53.7 ± 16.5 N/m and from 25.1 to 49.8 N/m in the CollG and CG, respectively (P < 0.0001); however, there were no differences between groups before and after the supplementation period. As a consequence, the spatiotemporal parameters of running were also similar between groups. Conclusions: Four weeks of HC supplementation does not improve the bouncing mechanism of running in recreational triathletes.
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来源期刊
Asian Journal of Sports Medicine
Asian Journal of Sports Medicine Medicine-Orthopedics and Sports Medicine
CiteScore
0.90
自引率
0.00%
发文量
22
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