Marcos-Pardo Pablo Jorge, González-Hernández Jorge Miguel, García-Ramos Amador, López-Vivancos Abraham, Jiménez-Reyes Pedro
Faculty of Sport, Catholic University San Antonio of Murcia, Murcia, Spain.
Faculty of Health Science, European University of Canarias, Tenerife, Islas Canarias, Spain.
PeerJ. 2019 Aug 20;7:e7533. doi: 10.7717/peerj.7533. eCollection 2019.
Movement velocity has been proposed as an effective tool to prescribe the load during resistance training in young healthy adults. This study aimed to elucidate whether movement velocity could also be used to estimate the relative load (i.e., % of the one-repetition maximum (1RM)) in older women.
A total of 22 older women (age = 68.2 ± 3.6 years, bench press 1RM = 22.3 ± 4.7 kg, leg press 1RM = 114.6 ± 15.9 kg) performed an incremental loading test during the free-weight bench press and the leg press exercises on two separate sessions. The mean velocity (MV) was collected with a linear position transducer.
A strong linear relationship between MV and the relative load was observed for the bench press (%1RM = -130.4 MV + 119.3; = 0.827, standard error of the estimate (SEE) = 6.10%1RM, < 0.001) and leg press exercises (%1RM = -158.3 MV + 131.4; = 0.913, SEE = 5.63%1RM, < 0.001). No significant differences were observed between the bench press and leg press exercises for the MV attained against light-medium relative loads (≤70%1RM), while the MV associated with heavy loads (≥80%1RM) was significantly higher for the leg press.
These results suggest that the monitoring of MV could be useful to prescribe the loads during resistance training in older women. However, it should be noted that the MV associated with a given %1RM is significantly lower in older women compared to young healthy individuals.
运动速度已被提议作为规定年轻健康成年人抗阻训练负荷的有效工具。本研究旨在阐明运动速度是否也可用于估计老年女性的相对负荷（即一次重复最大值（1RM）的百分比）。
共有22名老年女性（年龄=68.2±3.6岁，卧推1RM=22.3±4.7千克，腿举1RM=114.6±15.9千克）在两个不同的时间段进行了自由重量卧推和腿举练习的递增负荷测试。使用线性位置传感器收集平均速度（MV）。
在卧推（%1RM=-130.4MV+119.3； =0.827，估计标准误差（SEE）=6.10%1RM， <0.001）和腿举练习（%1RM=-158.3MV+131.4； =0.913，SEE=5.63%1RM， <0.001）中，观察到MV与相对负荷之间存在很强的线性关系。在针对轻-中等相对负荷（≤70%1RM）达到的MV方面，卧推和腿举练习之间未观察到显著差异，而在腿举中，与重负荷（≥80%1RM）相关的MV显著更高。
这些结果表明，监测MV可能有助于规定老年女性抗阻训练期间的负荷。然而，应该注意的是，与年轻健康个体相比，老年女性中与给定%1RM相关的MV显著更低。
