Dynamics of intramuscular 31 P - MRS P(i) peak splitting and the slow components of PCr and O2 uptake during exercise. - Rossiter,H.B.; Ward,S.A.; Howe,F.A.; Kowalchuk,J.M.; Griffiths,J.R.; Whipp,B.J. (J Appl Physiol, 2002)