Differences in muscle adaptation to a 12-week mixed power training in elderly men, depending on usual protein intake

Dulac, Maude; Pion, Charlotte H.; Lemieux, F.C.; Hajj, G. Boutros El; Bélanger, Marcel; Gaudreau, Pierrette; Chevalier, Stéphanie; Morais, José A.; Gouspillou, Gilles; Aubertin‐Leheudre, Mylène

doi:10.1016/j.exger.2018.02.001

Cited by 10 publications

(12 citation statements)

References 44 publications

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“…Thus, we decided to focus on this training modality in the present study. Our group also shown divergent results in a previous work showing that protein intake above 1.2 g kg −1 day −1 is associated with higher muscle improvements following mixed power training in healthy older men [37]. The divergent results with this previous study could be explained by the different modality training (mixed-power training vs. HIIT) and the selection criteria of the population (health older men vs. obese men and women).…”

Section: Discussioncontrasting

confidence: 86%

“…First of all, because of the size of the sample, it is possible that the lack of beneficial effect of an even distribution of protein intake might just reflects a type II error. Always because of the small sample size, sexspecific analyzes could not be performed even if Dulac et al showed significant effect of protein associated with exercise in elderly men [37]. However, according to our calculation, our sample allows to have a statistical power of 70%.…”

Section: Discussionmentioning

confidence: 96%

“…In addition, aerobic capacity (estimated VO 2max in mL·kg −1 ·min −1 ) was estimated based on the total distance realized during 6 min and according to the following validated equation: 70 [47,48] was performed at usual self-pace and fast speed. The time (in seconds) needed to cover the entire distance was recorded [37].…”

Section: Functional Capacitiesmentioning

confidence: 99%

“…However, a paucity of interventional studies exists that critically assess whether within-day protein intake distribution influence muscle adaption following exercise training. In this sense, our group recently suggested that the initial amount of protein could influence the muscle adaptation (i.e., gains in muscle strength and quality) following an exercise training in older adults [36,37]. Up to now, the effectiveness of resistance training to improve body composition or muscle function (muscle strength, anabolic response, functional outcomes) [24], in combination with or without dietary energy restriction, was not shown to be influenced by the within-day distribution of proteins, when day-to-day protein consumption is adequate [38,39].…”

Section: Introductionmentioning

confidence: 99%

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Muscle adaptation in response to a high-intensity interval training in obese older adults: effect of daily protein intake distribution

et al. 2019

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Background Aging is associated with declines in muscle mass, strength and quality, leading to physical impairments. An even protein distribution in daily meals has recently been proposed along with adequate total protein intake as important modulators of muscle mass. In addition, due to its short duration, high-intensity interval training (HIIT) has been highlighted as a promising intervention to prevent physical deterioration. However, the interaction between daily protein intake distribution and HIIT intervention in elderlies remain unknown. Objective To investigate muscle adaptation following HIIT in older adults according to daily protein intake distribution. Methods Thirty sedentary obese subjects who completed a 12-week elliptical HIIT program were matched [criteria: age (± 2 years), sex, BMI (± 2 kg/m 2 )] and divided a posteriori into 2 groups according to the amount of protein ingested at each meal: < 20 g in at least one meal (P20−, n = 15, 66.8 ± 3.7 years) and ≥ 20 g in each meal (P20+, n = 15, 68.1 ± 4.1 years). Body composition, functional capacity, muscle strength, muscle power, physical activity level, and nutritional intakes were measured pre-and post-intervention. A two way repeated ANOVA was used to determine the effect of the intervention (HIIT) and protein distribution (P20− vs P20+, p < 0.05). Results No difference was observed at baseline between groups. Following the HIIT intervention, we observed a significant decrease in waist and hip circumferences and improvements in functional capacities in both P20− and P20 + group (p < 0.05). However, no protein distribution effect was observed. Conclusion A 12-week HIIT program is achievable and efficient to improve functional capacities as well as body composition in obese older adults. However, consuming at least 20 g of proteins in every meal does not further enhance muscle performance in response to a 12-week HIIT intervention.

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Section: Discussioncontrasting

confidence: 86%

Section: Discussionmentioning

confidence: 96%

Section: Functional Capacitiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Muscle adaptation in response to a high-intensity interval training in obese older adults: effect of daily protein intake distribution

et al. 2019

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“…Older adults have shown evidence of ‘anabolic resistance’, whereby a higher dose of protein is required to achieve the same MPS response as a younger person [ 1 , 28 , 39 , 40 , 44 ]. While this concept has been questioned, especially in the context of healthy older adults [ 45 ], it is now considered consensus that a higher recommended daily amount of 1–1.3 g/kg/day should be consumed by older people to offset catabolic conditions [ 1 , 46 , 47 , 48 , 49 ]. In the context of illness or injury, older adults may require as much as 2 g/kg/day, as recommended by the PROT-AGE Study Group [ 50 ].…”

Section: Anabolic Resistancementioning

confidence: 99%

Dietary Protein and Muscle in Aging People: The Potential Role of the Gut Microbiome

2018

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Muscle mass, strength, and physical function are known to decline with age. This is associated with the development of geriatric syndromes including sarcopenia and frailty. Dietary protein is essential for skeletal muscle function. Resistance exercise appears to be the most beneficial form of physical activity for preserving skeletal muscle and a synergistic effect has been noted when this is combined with dietary protein. However, older adults have shown evidence of anabolic resistance, where greater amounts of protein are required to stimulate muscle protein synthesis, and response is variable. Thus, the recommended daily amount of protein is greater for older people. The aetiologies and mechanisms responsible for anabolic resistance are not fully understood. The gut microbiota is implicated in many of the postulated mechanisms for anabolic resistance, either directly or indirectly. The gut microbiota change with age, and are influenced by dietary protein. Research also implies a role for the gut microbiome in skeletal muscle function. This leads to the hypothesis that the gut microbiome might modulate individual response to protein in the diet. We summarise the existing evidence for the role of the gut microbiota in anabolic resistance and skeletal muscle in aging people, and introduce the metabolome as a tool to probe this relationship in the future.

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Is responsiveness of elderly individuals to resistance training related to habitual nutritional intake? An exploratory analysis of a randomized controlled trial

et al. 2020

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Differences in muscle adaptation to a 12-week mixed power training in elderly men, depending on usual protein intake

Cited by 10 publications

References 44 publications

Muscle adaptation in response to a high-intensity interval training in obese older adults: effect of daily protein intake distribution

Muscle adaptation in response to a high-intensity interval training in obese older adults: effect of daily protein intake distribution

Dietary Protein and Muscle in Aging People: The Potential Role of the Gut Microbiome

Is responsiveness of elderly individuals to resistance training related to habitual nutritional intake? An exploratory analysis of a randomized controlled trial

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