Table 3.

Hierarchical regression analyses

	Sex	Self-efficacy	Percent fat	Total cell phone use
	Block 1	Block 2	Block 3	Block 4
	(ΔR2, Δ F , p)	(ΔR2, Δ F , p)	(ΔR2, Δ F , p)	(ΔR2, Δ F , p)
VO2 peak (ml kg·min-1)	0.18, 10.2, 0.003	0.07, 4.1, 0.049	0.09, 5.8, 0.02	0.06, 4.2, 0.047