Table 4.

Metabolic variables from the medial gastrocnemius muscle

	Y (n = 16)	O (n = 15)	p value
Rest
PCr (mM)	37.9 ± 1.2	38.1 ± 1.2	0.593
pH	7.02 ± 0.03	7.02 ± 0.04	0.707
Contraction
End PCra (% rest)	65.4 ± 10.7	59.4 ± 9.3	0.112
End pHa	7.07 ± 0.06	7.08 ± 0.04	0.605
Min pHb	6.88 ± 0.07	6.89 ± 0.08	0.965
k PCr (s−1)	0.022 ± 0.004	0.025 ± 0.006	0.551
V max (mM ATP s−1)	0.91 ± 0.17	0.96 ± 0.24	0.500

k_PCr rate constant of PCr recovery, V _max oxidative capacity

^aPCr and pH at the end of contraction

^aLowest pH achieved during recovery