Age and sex affect human muscle fibre adaptations to heavy-resistance strength training.

@article{Martel2006AgeAS,
  title={Age and sex affect human muscle fibre adaptations to heavy-resistance strength training.},
  author={Gr{\'e}gory Martel and Stephen M Roth and Frederick M. Ivey and Jeffrey T. Lemmer and Brian L. Tracy and Diane E Hurlbut and E. Jeffrey Metter and Ben F. Hurley and Marc A Rogers},
  journal={Experimental physiology},
  year={2006},
  volume={91 2},
  pages={457-64}
}
This study assessed age and sex effects on muscle fibre adaptations to heavy-resistance strength training (ST). Twenty-two young men and women (20-30 years old) and 18 older men and women (65-75 years old) completed 9 weeks of heavy-resistance knee extension exercises with the dominant leg 3 days week(-1); the non-dominant leg served as a within-subject, untrained control. Bilateral vastus lateralis muscle biopsies were obtained before and after ST for analysis of type I, IIa and IIx muscle… CONTINUE READING
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