. Author manuscript; available in PMC: 2010 May 1.

Published in final edited form as: Mech Ageing Dev. 2009 Feb 6;130(5):315–319. doi: 10.1016/j.mad.2009.01.006

Table 2.

³¹P MRS data at baseline and end of exercise.

³¹P MRS Variables	Normal Lean (N=15)	Sarcopenic (N=9)	P-Value
[PCr]mM Rest	35.5 ± 1.8	36.4 ± 3.6	0.35
[Pi] mM Rest	3.4 ± 0.5	3.8 ± 0.4	0.02^*
pH Rest	6.99 ± 0.01	6.99 ± 0.02	0.98
[ADP] μM Rest	4.7 ± 0.6	5.3 ± 0.8	0.10
[PCr]/[Pi] Rest	10.6 ± 1.5	9.5 ± 1.3
ATP/[PCr] Rest	0.0036 ± 0.0003	0.0035±0.0006	0.42
ATP/[ADP] Rest	0.0266 ± 0.0038	0.0234 ± 0.0028	0.03^*
ΔGp Rest (kJ/mole)	−56.2 ± 0.6	−55.7 ± 0.5	0.02^*
[PCr] mM End of Exercise	28.9 ± 3.8	28.7 ± 4.4	0.94
[Pi] mM End of Exercise	9.9 ± 6.7	9.8 ± 6.1	0.91
pH End of Exercise	7.03 ± 0.03	7.02 ± 0.06	0.62
[ADP] μM End of Exercise	15.9 ± 8.6	17.4 ± 9.3	0.72
ΔGp End of Exercise (kJ/mole)	−52.12 ± 2.16	−52.68 ± 2.70	0.06^†
PCr t1/2 (seconds)	43.8 ± 21.4	57.2 ± 36.9	0.19

Values are shown as means ± SD.

Significant difference between normal lean and sarcopenic group,

^†

for trend in significance between normal lean and sarcopenic group (p<0.05).