UNASSIGNED: The study had a cross-over design and fifteen strength trained males (mean age: 22.9 ± 2.1 years; mean relative strength level 2.01 ± 0.27 kg/body mass) participated in one familiarization, two experimental and one control session (CNTR condition). Two CAs were implemented throughout the study - a single set of 3 repetitions of a trap bar deadlift at 80 % of 1RM using solely free weight resistance or with the addition of approximately 15 % of 1RM elastic band tension. The SJ measurements were performed at the baseline and 90s after CAs.
UNASSIGNED: The FW + AR condition significantly improved subsequent SJ performance (p < 0.05, effect size 0.34) whereas the FW and CNTR conditions were found to be ineffective to acutely enhance performance.
UNASSIGNED: Our results suggest that the addition of accommodating resistance is superior to free weight resistance in order to acutely improve jump performance after a 90s rest interval. To observe the performance enhancement effect with solely free weight resistance it should be considered to introduce alteration in loading strategies or possibly lengthening the rest interval.
■该研究进行了交叉设计,15名经过力量训练的男性(平均年龄:22.9±2.1岁;平均相对力量水平为2.01±0.27kg/体重)参加了一次熟悉,两个实验和一个控制会话(CNTR条件)。在整个研究过程中实施了两个CA-在1RM的80%下,仅使用自由重量阻力或添加约15%的1RM弹性带张力,进行了3次重复的陷阱杆硬拉。SJ测量在基线和CA后90s进行。
■FW+AR条件显著改善了随后的SJ性能(p<0.05,效应大小为0.34),而发现FW和CNTR条件对急剧增强性能无效。
■我们的结果表明,增加调节阻力优于自由重量阻力,以便在90年代的休息间隔后急剧提高跳跃性能。为了观察仅具有自由重量阻力的性能增强效果,应考虑改变加载策略或可能延长休息间隔。