. 2020 Jul 13;10:11520. doi: 10.1038/s41598-020-68455-8

Table 2.

Influence of age on related indicators of VO_2max in untrained male Wistar rats.

Age	VO_2max (mL kg⁻¹ min⁻¹)	RER	Completion time (min)
4 weeks	105.6 ± 4.8	1.035 ± 0.066	25.08 ± 3.69
8 weeks	85.4 ± 4.0*	1.034 ± 0.544	21.73 ± 3.66*
10 months	62.3 ± 6.4*^#	1.044 ± 0.043	16.71 ± 2.67*^#
16 months	56.2 ± 2.5*^#&	1.071 ± 0.039*^#	13.70 ± 2.23*^#&

All values are presented as mean ± SD, n = 20 for each group.

*p < .0.05 versus 4-week-old rats. ^#p < .0.05 versus 8-week-old rats. ^&p < 0.05 versus 10-month-old rats.