Effects of Icelandic yogurt consumption and resistance training in healthy untrained older males.
Br J Nutr
; 127(9): 1334-1342, 2022 05 14.
Article
em En
| MEDLINE
| ID: mdl-34121642
ABSTRACT
Due to the important roles of resistance training and protein consumption in the prevention and treatment of sarcopenia, we assessed the efficacy of post-exercise Icelandic yogurt consumption on lean mass, strength and skeletal muscle regulatory factors in healthy untrained older males. Thirty healthy untrained older males (age = 68 ± 4 years) were randomly assigned to Icelandic yogurt (IR; n 15, 18 g of protein) or an iso-energetic placebo (PR; n 15, 0 g protein) immediately following resistance training (3×/week) for 8 weeks. Before and after training, lean mass, strength and skeletal muscle regulatory factors (insulin-like growth factor-1 (IGF-1), transforming growth factor-beta 1 (TGF-ß1), growth differentiation factor 15 (GDF15), Activin A, myostatin (MST) and follistatin (FST)) were assessed. There were group × time interactions (P < 0·05) for body mass (IR Δ 1, PR Δ 0·7 kg), BMI (IR Δ 0·3, PR Δ 0·2 kg/m2), lean mass (IR Δ 1·3, PR Δ 0·6 kg), bench press (IR Δ 4, PR 2·3 kg), leg press (IR Δ 4·2, PR Δ 2·5 kg), IGF-1 (IR Δ 0·5, Δ PR 0·1 ng/ml), TGF-ß (IR Δ - 0·2, PR Δ - 0·1 ng/ml), GDF15 (IR Δ - 10·3, PR Δ - 4·8 pg/ml), Activin A (IR Δ - 9·8, PR Δ - 2·9 pg/ml), MST (IR Δ - 0·1, PR Δ - 0·04 ng/ml) and FST (IR Δ 0·09, PR Δ 0·03 ng/ml), with Icelandic yogurt consumption resulting in greater changes compared with placebo. The addition of Icelandic yogurt consumption to a resistance training programme improved lean mass, strength and altered skeletal muscle regulatory factors in healthy untrained older males compared with placebo. Therefore, Icelandic yogurt as a nutrient-dense source and cost-effective supplement enhances muscular gains mediated by resistance training and consequently may be used as a strategy for the prevention of sarcopenia.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Treinamento Resistido
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Sarcopenia
Tipo de estudo:
Clinical_trials
Limite:
Aged
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Humans
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Male
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Middle aged
País como assunto:
Europa
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article