TABLE 2.

Variables at fifth minute of constant work exercises.

V˙O2max (%)	PO (W)	V˙O2 (L·min−1)	HR (bpm)	SV (mL)	T° (°C)
40	35 ± 9	0.92 ± 0.11	100 ± 13	91.1 ± 12.5	37 ± 0.2
50	51 ± 14a	1.11 ± 0.17a	109 ± 12a	98.6 ± 15.2	36.9 ± 03
60	74 ± 14a,b	1.31 ± 0.20a,b	121 ± 12a,b	101.0 ± 12.7	36.9 ± 0.3
70	96 ± 16a,b,c	1.53 ± 0.22a,b,c	136 ± 12a,b,c	98.4 ± 10.3	37.0 ± 0.3
80	120 ± 17a,b,c,d	1.75 ± 0.26a,b,c,d	153 ± 10a,b,c,d	100.4 ± 9.8	37.0 ± 0.2
Main effect	P < 0.001	P < 0.001	P < 0.001	P = 0.28	P = 0.55

Mean ± SD of PO, V˙O₂, HR, SV, and T° at the 5th minute of different exercise intensities relative to the V˙O_2max. Main effects for the relative exercise intensity are shown in the bottom line of the tables. Data in boldface are significant (P < 0.05).

^aSignificant difference from 40%.

^bSignificant difference from 50%.

^cSignificant difference from 60%.

^dSignificant difference from 70%.