31p NMR Spectroscopy study was performed in 5 elite athletes of used the upper limbs muscle The study was changed of phosphrus high energy metabolisim and PH-iT of the forearm muscles in relation to the stepwise exercise. The results were: 1. PH of varition was MVC 1% 7.022±0.018 and MVC 5% 7.038±0.021 of rest in significant(p<0.05). PH of all out was MVC 1% 6.837±80.054 and MVC 5% 6.96±0.159 in significant(p<0.05). PH of after 3 minute all out was MVC 1% 6.883±0.076 and MVC 5% 5.836±0.152 significant(p<0.05). 2. Pi/Pcr of variation was MVC 1% 0.145±0.028 and MVC 5% 0.142±0.025 in significant(p<0.05). Pi/Pcr of all out was MVC 1% 1.142±0.445 and MVC 5% 2.743±0.741 in significant(p<0.05). Pi/Pcr after 3 minute all out was MVC 1% 0.089±0.033 and MVC 5% 0.090±0.053 in no significant(p< 0.05) 3. PH-iT determined was MVC 1% 6.988±0.650 and MVC 5% 6.927±0.058 in significant(p >0.05). PH-iT Time was MVC 1% 8.32±0.31 minute and was MVC % 3.2+0.08%, MVC 5% 5.48±0.99minute was MVC % 6+0.99%. Pi/Pcr-iT determined MVC 1% 0.352±0.087 and MVC 5% 0.712±0.34minute in significant(p<0.05). Pi/Per-iT was MVC, 1% 8.62+0.24minute and was MVC 5% 2.6±0.72. MVC 5% 5.12±0.11minute was MVC % 7.0±0.18.