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The systematic review aimed to determine the effect of strength training on physiological and morphological adaptive capacities in healthy young men. A search was conducted for randomised clinical trials containing information on the effect of resistance exercise on physical and functional changes in young men aged 18-45 years. As a result, 13 publications that met the search criteria were found, of which 9 studies were selected after excluding inappropriate ones. Most of the studies were assessed as good-quality research with a score of 7-9 on the PEDro scale. Long-term strength training has been shown to significantly improve strength, muscle volume and explosive abilities in trained individuals. Strength training 3 times a week can increase lean body mass and left ventricular mass index, with a decrease in body fat. Light training stimulates hypertrophy of the gastrocnemius muscle more than heavy training, which has a greater impact on the middle and lateral heads of the gastrocnemius muscle. The sequence of exercises does not affect the increase in maximum strength, but the effect on pectoral muscle hypertrophy may be better when performing multi-joint exercises after isolated exercises. The appearance of microRNAs does not show specificity in the early acute state of training, with changes in expression observed 8 hours after training. The duration of weightlifting training has a positive effect on anthropometric and physiological parameters, but not on biochemical parameters
Vitalii Korotych (Tue,) studied this question.