Table 4.

Relationship Between Physical Performance Measurements and Single-Fiber Contractile Properties

		CSA	Force	Power
		µm2	kN/m2	W/L
Age	r	−0.860	−0.927	−0.855
	p	.006	.000	.007
RT time climb	r	0.420	0.469	0.609
	p	.300	.242	.109
RT time leaping	r	0.180	0.183	0.367
	p	.670	.665	.371
Percent time locomoting	r	−0.406	−0.399	−0.120
	p	.318	.327	.777
Mean walking speed	r	0.498	0.640	0.594
	p	.209	.088	.121
RT hang	r	0.559	0.320	0.282
	p	.150	.439	.499

Notes: CSA = fiber cross-sectional area; RT = relative to time; r = Pearson correlation coefficient.