Table 2.

Impact of sitting mode on VO₂ and HR during arm ergometry (Mean±SD).

	VO2 (mL· min−1)		HR (b·min−1)
	Ball	Chair	Ball	Chair
30 W	743±115*	680±108	106±13	104±16
45 W	971±121*	869±100	121±17	118±19
Penult	1609±319*	869±100	161±14*	156±15
Peak	2087±475*	1893±449	178±10*	174±10

^*Paired t test P < 0.001 between Ball and Chair