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Muscle fiber and performance adaptations to resistance exercise with MyoVive, colostrum or casein and whey supplementationa
Fry, Andrew C. Schilling, Brian K. Chiu, Loren Z. F. Weiss, Lawrence W. Kreider, Richard B. Rasmussen, Christopher J.
Fry, Andrew C.
Schilling, Brian K.
Chiu, Loren Z. F.
Weiss, Lawrence W.
Kreider, Richard B.
Rasmussen, Christopher J.
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Abstract
To determine the effects of 12 weeks of resistance exercise with MyoVive
and/or colostrum supplementation, 19 male and female recreationally weighttrained
subjects (X ± SE; age = 28.3 ± 6.9 yrs; hgt = 68.2 ± 3.8 cm) were
divided into MyoVive + colostrum (n = 4), MyoVive + casein & whey (n
= 4), colostrum + casein & whey (n = 6), and casein & whey (n = 5) groups.
All groups similarly increased (p < .05) 1 repetition maximum (RM) leg press
(kg; pre = 158.6 ± 12.8, post = 189.3 ± 11.3), body mass (kg; pre = 79.0 ±
3.2, post = 80.7 ± 3.8), and lean body mass (kg; pre = 60.1 ± 3.1, post = 62.2
± 2.8). Increases were observed for peak force (N; all loads), peak velocity
(m.s-1; 70% & 40% 1 RM), and peak power (W; 70% & 40% 1 RM) for all
groups for the leg press exercise, with no differences between groups. When
performance data were adjusted for body mass, lean body mass, lower body
lean mass as determined by DEXA, or % change, no group differences were
observed. Relative (%) fiber type content, cross-sectional areas (mm2), % fiber
type areas, or % myosin heavy chain expression did not change for any
group. These data suggest that MyoVive and colostrum supplementation
have no greater effect on cellular and performance adaptations when compared
to casein and whey protein.
Description
This is the publisher's version, also found at http://ehis.ebscohost.com/ehost/detail?sid=ba69ee0d-97cf-4a2c-a1a2-2c26fb60d65c%40sessionmgr13&vid=1&hid=2&bdata=JnNpdGU9ZWhvc3QtbGl2ZQ%3d%3d#db=s3h&AN=10725638
Date
2003
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Taylor & Francis
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Citation
Fry, Andrew C.; et al. (2003) Muscle fiber and performance adaptations to resistance exercise with MyoVive, colostrum or casein and whey supplementation. Research in Sports Medicine: An International Journal, 11: 109-127.