Investigate the effect of 12 weeks mixed power training (power and functional exercises) combined with a protein supplementation (30g/d) or not (placebo) on physiological characteristics of muscle and functional capacities in elderly men.
Life habits are know to be able to prevent the loss of functional capacities and muscle function during aging process. More specifically, protein intake is important to maintain muscle function in older adults. Another non pharmacological intervention and well recognized for its efficacy, it's exercise training. Recently, it has been observed than muscle quality is more important to maintain physical autonomy than muscle mass per se. In addition, muscle quality is more related to functional capacities than muscle mass. Due to this recent finding, it has been proposed that muscle power training would be the best exercise intervention to prevent the loss of mobility.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Enrollment
100
1/2 of the subject will follow a mixed power training: 4 power exercises + 6 functional exercises combined to a placebo
1/2 of the subject will receive 30 g/ d of protein (leucine+ vitD; divided in three equal doses: morning, afternoon and evening) + will follow a mixed power training: 4 power exercises + 6 functional exercises.
Change in walking speed
evaluate using the 4m- normal walking speed (m/sec)
Time frame: Change from Baseline walking speed at 12 weeks measure in all subjects
Change in lower limb muscle quality
Knee extension muscle strength (isometric (N)/ lower limb muscle mass (kg))
Time frame: Change from Baseline lower limb muscle quality at 12 weeks measure in all subjects
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