Abstract：
BACKGROUND: To date, no studies, to our knowledge, have compared the efficacy of autoregulated periodized and linear resistance exercises on anabolic myokines and muscular performance among recreationally active individuals. This study aimed to compare the effects of an 8-week autoregulated periodized resistance exercise (APRE) program with a linear resistance exercise (LRE) program on insulin-like growth factor-1 (IGF-1), follistatin (FST), myostatin (MST), body composition, muscular strength, and power in recreationally active males.
METHODS: Thirty males were randomly assigned to either the APRE group (n = 15) or the LRE group (n = 15). Participants completed training three times a week for 8 weeks. The outcome measures included serum IGF-1, FST, MST, muscular strength (isometric knee extension and handgrip), power (vertical jump), lean body mass, and fat mass.
RESULTS: IGF-1 circulating levels increased over time following APRE (34%) and with no significant change following LRE (~-1%). There were no significant differences over time or between groups for FST or MST. Muscular strength (knee extension [21.5 vs. ~16%] and handgrip [right: 31 vs. 25%; left: 31.7 vs. 28.8%]) and power (~ 33 vs. ~26%) significantly increased to a greater extent following APRE compared to LRE. Interestingly, the results revealed that lean body mass increased over time only after APRE (~ 3%), but not LRE.
CONCLUSIONS: These findings suggest that APRE may be more effective than LRE in increasing muscular strength, power, and lean body mass, as well as circulating IGF-1 levels, in recreationally active males. The observed differences may be attributed to the increased training volume associated with APRE. However, further research is needed to directly assess muscle protein synthesis.
METHODS: Thirty males were randomly assigned to either the APRE group (n = 15) or the LRE group (n = 15). Participants completed training three times a week for 8 weeks. The outcome measures included serum IGF-1, FST, MST, muscular strength (isometric knee extension and handgrip), power (vertical jump), lean body mass, and fat mass.
RESULTS: IGF-1 circulating levels increased over time following APRE (34%) and with no significant change following LRE (~-1%). There were no significant differences over time or between groups for FST or MST. Muscular strength (knee extension [21.5 vs. ~16%] and handgrip [right: 31 vs. 25%; left: 31.7 vs. 28.8%]) and power (~ 33 vs. ~26%) significantly increased to a greater extent following APRE compared to LRE. Interestingly, the results revealed that lean body mass increased over time only after APRE (~ 3%), but not LRE.
CONCLUSIONS: These findings suggest that APRE may be more effective than LRE in increasing muscular strength, power, and lean body mass, as well as circulating IGF-1 levels, in recreationally active males. The observed differences may be attributed to the increased training volume associated with APRE. However, further research is needed to directly assess muscle protein synthesis.
摘要：
背景：迄今为止，没有研究,根据我们的知识，比较了自我调节的周期化和线性阻力运动对娱乐性活跃个体中合成代谢肌细胞和肌肉表现的功效。这项研究旨在比较8周自动调节的周期抗阻运动（APRE）计划与线性抗阻运动（LRE）计划对胰岛素样生长因子-1（IGF-1）的影响。卵泡抑素（FST），肌肉生长抑制素(MST),身体成分,肌肉力量,和力量在娱乐活跃的男性。
方法：30名男性被随机分配到APRE组（n=15）或LRE组（n=15）。参与者每周完成三次培训，共8周。结果测量包括血清IGF-1，FST，MST,肌肉力量（等距膝盖伸展和手握），功率（垂直跳跃），瘦体重,和脂肪量。
结果：IGF-1循环水平在APRE后随时间增加（34％），在LRE后没有显着变化（〜-1％）。FST或MST随时间或组间无显著差异。肌肉力量（膝盖伸展[21.5vs.~16%]和手柄[右：31vs.25%；左：31.7vs.28.8%])和功率(~33vs.~26%)与LRE相比，APRE后显著增加。有趣的是,结果显示，瘦体重仅在APRE后随时间增加(~3%)，但不是LRE。
结论：这些研究结果表明，在增加肌肉力量方面，APRE可能比LRE更有效，电源,和瘦体重，以及循环IGF-1水平，在娱乐性活跃的男性中。观察到的差异可能归因于与APRE相关的训练量增加。然而,需要进一步的研究来直接评估肌肉蛋白质的合成。
方法：30名男性被随机分配到APRE组（n=15）或LRE组（n=15）。参与者每周完成三次培训，共8周。结果测量包括血清IGF-1，FST，MST,肌肉力量（等距膝盖伸展和手握），功率（垂直跳跃），瘦体重,和脂肪量。
结果：IGF-1循环水平在APRE后随时间增加（34％），在LRE后没有显着变化（〜-1％）。FST或MST随时间或组间无显著差异。肌肉力量（膝盖伸展[21.5vs.~16%]和手柄[右：31vs.25%；左：31.7vs.28.8%])和功率(~33vs.~26%)与LRE相比，APRE后显著增加。有趣的是,结果显示，瘦体重仅在APRE后随时间增加(~3%)，但不是LRE。
结论：这些研究结果表明，在增加肌肉力量方面，APRE可能比LRE更有效，电源,和瘦体重，以及循环IGF-1水平，在娱乐性活跃的男性中。观察到的差异可能归因于与APRE相关的训练量增加。然而,需要进一步的研究来直接评估肌肉蛋白质的合成。
