Similar body composition, muscle size, and strength adaptations to resistance training in lacto-ovo-vegetarians and non-vegetarians.

Autor: Martini GL; Postgraduate Program in Food, Nutrition and Health, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.; School of Physical Education, Physiotherapy and Dance, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil., Pinto RS; School of Physical Education, Physiotherapy and Dance, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil., Brusco CM; School of Physical Education, Physiotherapy and Dance, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil., Franceschetto BF; Department of Nutrition, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil., Oliveira ML; School of Physical Education, Physiotherapy and Dance, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil., Neske R; School of Physical Education, Physiotherapy and Dance, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil., Cadore FL; School of Physical Education, Physiotherapy and Dance, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil., Teodoro JL; School of Physical Education, Physiotherapy and Dance, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil., Wilhelm EN; Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle upon Tyne, UK., de Souza CG; Postgraduate Program in Food, Nutrition and Health, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.; Department of Nutrition, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil.; Nutrition and Dietetics Service, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Rio Grande do Sul, Brazil.
Jazyk: angličtina
Zdroj: Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme [Appl Physiol Nutr Metab] 2023 Jun 01; Vol. 48 (6), pp. 469-478. Date of Electronic Publication: 2023 Mar 01.
DOI: 10.1139/apnm-2022-0258
Abstrakt: There is a popular belief that meat consumption is necessary to optimize adaptations to strength training (ST), but evidence to support this hypothesis is scarce. Therefore, this study aimed to compare ST adaptations in lacto-ovo-vegetarians (LOV) and non-vegetarians (NV) with adjusted protein intake per meal. Sixty-four LOV and NV performed 12 weeks of ST and were instructed to ingest at least 20 g of protein in each main meal during the experimental period. Quadriceps femoris muscle thickness (QFMT), knee extension one-repetition maximum (1RM), and isometric peak torque (PT), as well as participants' body composition were assessed before and after the intervention. Dietary intake was assessed throughout the study. After 12 weeks, similar increases in QFMT (LOV: 9.2 ± 5.4; NV: 5.5 ± 8.1 mm), knee extension 1RM (LOV: 24.7 ± 11.1; NV: 21.6 ± 9.8 kg), and PT (LOV: 29.8 ± 33.4; NV: 17.5 ± 19.4 N m) and lean body mass (LOV: 1.3 ± 0.9; NV: 1.4 ± 1.4 kg), alongside a decrease in body fat mass (LOV: -0.5 ± 1.6; NV -0.8 ± 1.6 kg) were observed in both groups at the end of the training period ( p  < 0.05). LOV had lower protein consumption than NV throughout the study ( p  < 0.05), but participants reached intake of at least 1.2 g of protein/kg/day during the experimental period. In conclusion, LOV and NV displayed similar improvements in muscle mass, strength, and in body composition after 12 weeks of ST, suggesting that meat consumption and higher protein intake in NV did not bring about further benefits to early adaptations to ST. This study was registered in Clinical Trials (NCT03785002) on 24 December 2018.
Competing Interests: The authors declare there are no conflicts of interest.
Databáze: MEDLINE
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