Animal-derived protein consumption is associated with muscle mass and strength in community-dwellers: Results from the Milan Expo survey

Francesco Landi, Riccardo Calvani, Matteo Tosato, Anna Maria Martone, A. Picca, E. Ortolani, Giulia Savera, S. Salini, M. Ramaschi, Roberto Bernabei, Emanuele Marzetti

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

Abstract

Objectives: Behavioral factors, including protein intake, influence the quantity and quality of skeletal muscle. The aim of this study was to explore the relationship between animal-derived protein intake and muscle mass and function in a large sample of unselected community-dwellers. Material and Methods: The VIP (Very Important Protein) study, conducted during Expo 2015 in Milan, was a population survey aimed at assessing major health metrics in a population outside of the research setting, with a special focus on the relation between animal-derived protein intake and muscle mass and function. A brief questionnaire exploring lifestyle habits, dietary preferences and the consumption of selected foods was administered. Muscle mass was estimated by calf circumference (CC) and mid-arm muscle circumference (MAMC) of the dominant side. Muscle strength of upper and lower extremities was assessed through handgrip strength testing and repeated chair stand test, respectively. Results: The mean age of the 1,853 participants was 50.3 years (standard deviation: 15.7; range: 18-98 years), of whom 959 (51.7%) were women. Participants in the highest tertile of protein consumption showed better performance at both the handgrip strength (p <0.001) and chair stand tests than those in the lowest tertile (p <0.01). The same results were found for CC (p <0.001) and MAMC (p <0.001). Participants with high protein intake and engaged in regular physical activity showed the higher scores in all the assessed domains. Conclusions: The results of the VIP survey suggest an association between animal-derived protein intake and muscle mass and strength across ages. Our findings also indicate a synergistic effect of animal-derived protein intake and physical activity on muscle-related parameters.
Lingua originaleEnglish
pagine (da-a)1050-1056
Numero di pagine7
RivistaTHE JOURNAL OF NUTRITION, HEALTH &amp; AGING
Volume21
DOI
Stato di pubblicazionePubblicato - 2017

Keywords

  • Protein intake
  • physical activity
  • physical performance
  • protein quality
  • recommended dietary allowance (RDA)

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