Int J Sports Med
DOI: 10.1055/a-1171-2287
Training & Testing

Validity of Using Velocity to Estimate Intensity in Resistance Exercises in Men and Women

1  Physical Performance & Sports Research Center, Department of Sports and Computers Sciences, Universidad Pablo de Olavide, Seville, Spain
,
2  NeuroMuscular Research Center, Faculty of Sport and Health Sciences, University of Jyväskylä, Finland
,
Keijo Häkkinen
2  NeuroMuscular Research Center, Faculty of Sport and Health Sciences, University of Jyväskylä, Finland
› Author Affiliations

Abstract

This study aimed to examine the validity of using bar velocity to estimate relative load in squat and bench-press exercises for both young men and women. Twenty-five men and 25 women performed a progressive loading test up to 1-RM in the squat and bench-press exercises, which were repeated after 2-weeks. Relationships between mean propulsive velocity and%1-RM were analysed. A second-order polynomial equation for predicting the corresponding velocity of each percentage of 1-RM was developed for men (validation). This equation was then applied in women (cross-validation). Moreover, a specific equation for women was developed (validation) and was also applied in a sub-sample of women (cross-validation). Close relationships (R2: 0.91–0.95) between bar velocity and relative load were observed in both sexes for squat and bench press. Men’s equation applied to women showed a high level of agreement, although lower bias and higher level of agreement was observed when a sex-specific equation was applied in women, both validation and cross-validation samples. In conclusion, lifting velocity can be used to accurately prescribe the relative load regardless of sex in both upper-body and lower-body exercises, although when estimating load from velocity measures it will be necessary to use the sex-specific equation for each exercise.



Publication History

Received: 00 00 2020

Accepted: 21 April 2020

Publication Date:
20 July 2020 (online)

© Georg Thieme Verlag KG
Stuttgart · New York