נק' מוניטין:
58,701
J Strength Cond Res. 2015 Nov 7. [Epub ahead of print
]
The effect of resistance training and different sources of post-exercise protein supplementation on muscle mass and physical capacity in sarcopenic elderly men.
Maltais ML1, Perreault-Ladouceur J, Dionne IJ.
Author information
Abstract
The loss of muscle mass (sarcopenia) with aging is related with a progressive loss of muscle strength and physical capacity. Resistance exercise and milk-based protein supplementation have been demonstrated as significant countermeasures to sarcopenia and the loss of muscle strength. However, using high doses of proteins can act as a meal replacement in the elderly. Therefore, we sought to determine if a standard supplementation (12g per serving) of protein and resistance training could be an efficient strategy to promote muscle strength and physical capacity in sarcopenic men. Twenty-six participants were randomized in 3 groups in a double-blind control study. The groups all performed exercise and consumed a protein rich supplement (12g of protein, 7g of essential amino acids either from milk (n=8), or soy (n=8) or rice milk (non-protein control, n=10). Body composition was measured with DXA. Strength was measured by 1-RM with different exercises. Different physical capacity measurements were assessed (TUG, chair stand, walking speed). The results indicated a significant increase in fat-free mass in all groups and changes in muscle strength, with no differences between groups. This study indicates that resistance training is an effective way to increase muscle mass and strength, regardless of protein supplementation. Higher doses of protein-rich foods may have to be recommended to promote muscle mass gains when executing resistance exercise in elderly sarcopenic individuals.
]
The effect of resistance training and different sources of post-exercise protein supplementation on muscle mass and physical capacity in sarcopenic elderly men.
Maltais ML1, Perreault-Ladouceur J, Dionne IJ.
Author information
Abstract
The loss of muscle mass (sarcopenia) with aging is related with a progressive loss of muscle strength and physical capacity. Resistance exercise and milk-based protein supplementation have been demonstrated as significant countermeasures to sarcopenia and the loss of muscle strength. However, using high doses of proteins can act as a meal replacement in the elderly. Therefore, we sought to determine if a standard supplementation (12g per serving) of protein and resistance training could be an efficient strategy to promote muscle strength and physical capacity in sarcopenic men. Twenty-six participants were randomized in 3 groups in a double-blind control study. The groups all performed exercise and consumed a protein rich supplement (12g of protein, 7g of essential amino acids either from milk (n=8), or soy (n=8) or rice milk (non-protein control, n=10). Body composition was measured with DXA. Strength was measured by 1-RM with different exercises. Different physical capacity measurements were assessed (TUG, chair stand, walking speed). The results indicated a significant increase in fat-free mass in all groups and changes in muscle strength, with no differences between groups. This study indicates that resistance training is an effective way to increase muscle mass and strength, regardless of protein supplementation. Higher doses of protein-rich foods may have to be recommended to promote muscle mass gains when executing resistance exercise in elderly sarcopenic individuals.
