Petrus Gantois, Drumond Gilo, Ana Denise, Alejandro Muñoz-López, F. Nakamura, Fabiano de Souza Fonseca
{"title":"Load–Velocity Relationship to Estimate the One-Repetition Maximum in the Hexagonal Bar Deadlift Exercise in Women","authors":"Petrus Gantois, Drumond Gilo, Ana Denise, Alejandro Muñoz-López, F. Nakamura, Fabiano de Souza Fonseca","doi":"10.1123/wspaj.2022-0015","DOIUrl":null,"url":null,"abstract":"In this study, we examined the load–velocity relationship in the hexagonal bar deadlift exercise in women. Twenty-seven resistance-trained women were recruited. Participants performed a progressive load test up to the one-repetition maximum (1RM) load for determining the individual load–velocity relationship in the hexagonal bar deadlift exercise. Bar velocity was measured in every repetition through a linear encoder. A very strong and negative relationship was found between the %1RM and bar velocity for the linear (R2 = .94; standard error of the estimation = 5.43% 1RM) and second-order polynomial (R2 = .95) regression models. The individual load–velocity relationship provided even better adjustments (R2 = .98; coefficient of variation = 1.77%) than the general equation. High agreement level and low bias were found between actual and predicted 1RM for the general load–velocity relationship (intraclass correlation coefficient = .97 and 95% confidence interval [0.90, 0.99]; bias = −2.59 kg). In conclusion, bar velocity can be used to predict 1RM with high accuracy during hexagonal bar deadlift exercise in resistance-trained women.","PeriodicalId":36995,"journal":{"name":"Women in Sport and Physical Activity Journal","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Women in Sport and Physical Activity Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1123/wspaj.2022-0015","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Social Sciences","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, we examined the load–velocity relationship in the hexagonal bar deadlift exercise in women. Twenty-seven resistance-trained women were recruited. Participants performed a progressive load test up to the one-repetition maximum (1RM) load for determining the individual load–velocity relationship in the hexagonal bar deadlift exercise. Bar velocity was measured in every repetition through a linear encoder. A very strong and negative relationship was found between the %1RM and bar velocity for the linear (R2 = .94; standard error of the estimation = 5.43% 1RM) and second-order polynomial (R2 = .95) regression models. The individual load–velocity relationship provided even better adjustments (R2 = .98; coefficient of variation = 1.77%) than the general equation. High agreement level and low bias were found between actual and predicted 1RM for the general load–velocity relationship (intraclass correlation coefficient = .97 and 95% confidence interval [0.90, 0.99]; bias = −2.59 kg). In conclusion, bar velocity can be used to predict 1RM with high accuracy during hexagonal bar deadlift exercise in resistance-trained women.