The relevance of progressive resistance training (Prt) in the prevention and treatment of sarcopenia

Rationale: The importance of exercise has been emphasized in the prevention of sarcopenia. This study investigated lean mass gain, improved muscle strength and functional capacity, obtained through Progressive Resistance Training (PRT) of large muscle groups. Methods: Prospective longitudinal study developed with adult and elderly individuals (N=51). The hand grip strength, the sit-to-stand test, electrical bioimpedance, anthropometry and the PRT were evaluated. Statistical analysis was performed using the Wilcoxon test and simple and multiple linear regression analysis, with a significance level of 5% (p <0.05). Results: There was a statistically significant difference for handgrip strength, sit-to-stand test, bioimpedance and PRT in all exercises (p±0.0001). In the simple linear regression analysis for the study of PRT variation, the largest variation was associated with the younger age in the PRT Twin. In the PRT Leg Extension Machine and Leg Curl Machine, the male gender presented greater variation. In Abdominal PRT, shoulder comorbidity accounted for 11.52% of the variability. In the single and multiple linear regression analysis for PRT Chest Press and Seated Rowing, the largest variation was associated with younger age and male gender. Conclusion: There was an improvement in lean mass gain, muscle strength and functional capacity. The findings show the relevance of PRT as a therapeutic strategy to prevent, mitigate or reverse the deleterious effects of aging. References: 1.Tabachnick BG, Fidell LS. Using multivariate statistics. 2001, 4 ed. Allyn & Bacon. Needham Heights. USA. 2.Conover WJ, Iman RL. Rank transformations as a bridge between parametric and nonparametric statistics. The American Statitician. 1981; 35(3): 124-129. 3.Vikberg S, Sörlén N, Branden L, Johansson J, Nordström A, Hult A, Nordström P. Effects of resistance training on functional strengths and muscle mass in 70-year-old individuals with pre-sarcopenia: a randomized controlled trial. Journal of the American Medical Directors Association 2019; 20 (1): 28-34. Disclosure of Interest: None declared.