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Is there an association between total physical activity level and VO2max among fitness club members? A cross-sectional study

Elene Mauseth Tangen,C. Gjestvang,T. Stensrud,L. Haakstad

Published 2022 in BMC Sports Science, Medicine and Rehabilitation

ABSTRACT

Background Since cardiorespiratory fitness is an important predictor for all-cause mortality, it is of interest to know if meeting the physical activity (PA) recommendations is associated with higher levels of maximal oxygen uptake (VO 2max ). We aimed to investigate the association between total PA level given as counts per minute (cpm) and minutes in moderate-to-vigorous PA (MVPA), and VO 2max in new fitness club members. Methods A total of 62 men and 63 women (≥ 18 years), defined as healthy (no disease considered to hinder PA) participated in this study. VO 2max (mL kg −1  min −1 ) was measured with a cardiopulmonary exercise (modified Balke protocol), and total PA level was measured with ActiGraph GT1M for seven consecutive days. All participants accumulating ≥ 10 h of activity recordings ≥ 4 days were included in the data analysis. To examine associations between PA level and VO 2max , a Pearson correlation and a multiple linear regression analysis adjusted for covariates were used. Results VO 2max (mL kg −1  min −1 ) was 40.5 ± 7.2 in men and 35.1 ± 6.0 in women. Total PA level (cpm) and MVPA (min) were 352.4 ± 123.4 and 260.0 ± 132.6 in men and 361.4 ± 103.8 and 273.2 ± 137.0 in women. Total PA level (men: r = 0.346, p  < 0.01, women: r = 0.267 p  < 0.01) and MVPA (men: r = 0.359, p  =  < 0.01, women: r = 0.236, p  = 0.03) was associated with VO 2max . When adjusting for age and body fat percentage, total PA level and MVPA were no longer associated with VO 2max (men: p  = 0.11 and p  = 0.79, women: p  = 0.40 and p  = 0.61). In men, age (β = − 0.469 p  < 0.01) and body fat percentage (β = − 0.483, p  < 0.01) were the strongest predictor for VO 2max . For women, body fat percentage was the strongest predictor for VO 2max (β = − 0.483, p  < 0.01). Conclusions Total PA level and MVPA were associated with VO 2max , but the association was low and diminished when adjusted for age and body fat percentage. Body fat percentage (men and women) and age (men) were more strongly associated with VO 2max than total PA level and MVPA.

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