Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
Serra Gaúcha University Center, Caxias do Sul, RS, Brazil.
Phys Ther Sport. 2021 Jul;50:65-73. doi: 10.1016/j.ptsp.2021.04.004. Epub 2021 Apr 21.
To compare the effects of moderate intensity running and cycling on markers of exercise-induced muscle damage in men.
Randomized controlled trial.
Laboratory.
Thirty volunteers were randomized in three groups [running (RG; n = 10), cycling (CG; n = 10) and control (CON; n = 10)] and were evaluated at baseline, post 24, 48 and 72 h of knee extensors' muscle damage protocol. CON performed passive recovery, while RG and CG performed active recovery immediately after the protocol, as well as 24 h and 48 h afterwards.
(i) maximal voluntary isometric contraction (MVIC); (ii) delayed-onset muscle soreness (DOMS); (iii) plasma creatine kinase (CK) and lactate dehydrogenase (LDH) levels.
No group-by-time interaction was found in any outcome evaluated (p > 0.05). All groups presented decreases in MVIC and increases in DOMS (p < 0.001), without differences in CK and LDH. Compared with CON, exercise groups presented likely beneficial effects for LDH, while only CG had a likely beneficial effect for DOMS. Lastly, CG presented likely/very likely beneficial effects for MVIC and DOMS compared to RG.
Although the null hypothesis analysis did not find differences, the magnitude-based inference analysis suggested that moderate intensity cycling have likely beneficial effects on knee extensor muscle recovery after eccentric exercise protocol.
比较中等强度跑步和骑行对男性运动诱导肌肉损伤标志物的影响。
随机对照试验。
实验室。
30 名志愿者随机分为 3 组[跑步（RG；n=10）、骑行（CG；n=10）和对照组（CON；n=10）]，并在基线、伸膝肌损伤方案后 24、48 和 72 小时进行评估。CON 进行被动恢复，而 RG 和 CG 在方案后立即进行主动恢复，以及 24 小时和 48 小时后进行恢复。
（i）最大自主等长收缩（MVIC）；（ii）迟发性肌肉酸痛（DOMS）；（iii）血浆肌酸激酶（CK）和乳酸脱氢酶（LDH）水平。
在评估的任何结果中均未发现组间时间交互作用（p>0.05）。所有组的 MVIC 均降低，DOMS 增加（p<0.001），CK 和 LDH 无差异。与 CON 相比，运动组的 LDH 可能有有益的影响，而只有 CG 对 DOMS 有可能有益的影响。最后，与 RG 相比，CG 对 MVIC 和 DOMS 有更可能/很可能有益的影响。
尽管零假设分析没有发现差异，但基于幅度的推断分析表明，中等强度骑行对离心运动方案后膝关节伸肌恢复可能有有益的影响。
