Table 2.

The association between cardiorespiratory fitness (VO_2max) and relative aerobic load (%HRR) at work

	Estimates [95% CI]
	Unadjusted analysis (n = 497)	Adjusted analysis (n = 439)
Mean %HRRa	−0.32 [−0.39 to −0.25]	−0.35 [−0.42 to −0.28]
Max %HRR a	−0.35 [−0.45 to −0.25]	−0.43 [−0.55 to −0.32]
> 30%HRRb	−1.8% [−2.2 to −1.5%]	−1.9% [−2.3 to −1.5%]

Bold indicates statistically significant effects (p < 0.05)

HRR heart rate reserve, Max %HRR maximum % of HRR at which an individual has spent at least 1 min at or above during work, >30%HRR percentage of time spent at work above 30% HRR

^aEstimates are β-coefficients

^bEstimates are the absolute change in the proportion of time spent at work above 30%HRR