Effects of creatine supplementation on the energy cost of muscle contraction: a 31P-MRS study.

@article{Smith1999EffectsOC,
  title={Effects of creatine supplementation on the energy cost of muscle contraction: a 31P-MRS study.},
  author={Scott A. Smith and Scott Montain and R P Matott and Gary P. Zientara and Ferenc A. Jolesz and Roger A Fielding},
  journal={Journal of applied physiology},
  year={1999},
  volume={87 1},
  pages={116-23}
}
Five women and 3 men (29.8 +/- 1.4 yr) performed dynamic knee-extension exercise inside a magnetic resonance system (means +/- SE). Two trials were performed 7-14 days apart, consisting of a 4- to 5-min exhaustive exercise bout. To determine quadriceps cost of contraction, brief static and dynamic contractions were performed pre- and postexercise. (31)P spectra were used to determine pH and relative concentrations of P(i), phosphocreatine (PCr), and betaATP. Subjects consumed 0.3 g. kg(-1). day… CONTINUE READING