VO2max in human participants (Pearson's correlation coefficients).

r>│0.467│ for 1-tailed significance of pNo anthropometric factor accounted for the significant positive correlation between endurance capacity (deviation from predicted VO2max) and minutes per day spent standing or walking. The amount of activity over 4 METS per month (1 hr of 5-METS activity = 5) also did not correlate with either VO2max or min/day activity. There were trends toward lower activity levels in those with both higher BMI and higher percent body fat. Note that, in order for any factor to account for the strong association between endurance capacity and activity levels, the factor would have to be positively correlated with both variables or negatively associated with both variables. The correlation between time spent standing and VO2max remained significant when the VO2max deviation was calculated according to fat-free mass instead of total body mass (r = 0.56), or if the single individual with unusually high activity levels was removed for the analysis (r = 0.64). We also correlated VO2max with activity (min per day spent standing or walking) when VO2max was calculated according to fat-free mass (r = 0.440), or total mass (r = 0.438), both in ml/kg/min.