The effectiveness of preparatory strength training on muscle strength and power in male swimmers

Introduction: A key factor in the success of a swimmer in competition is their ability to swim fast, and strength and muscle power further enhance this efficiency. Objective: The objective of this research was to compare the effectiveness of strength training during physical preparation on muscle strength and power. Methodology: The sample consisted of fifteen Thai national swimming team athletes (age: 17.0 ± 3.14 years; weight: 66.36 ± 10.13 kg; height: 172.73 ± 7.83 cm). All athletes underwent pre-exercise readiness assessments and had no history of muscle injury prior to the experiment. The sample was assigned to perform upper and lower body strength training at 67–85% 1RM, 3 days per week for 8 weeks. Data were analyzed using a paired sample t-test with a statistical significance level of 0.05. Results: The experiment showed a statistically significant increase in upper and lower body muscle strength and power (p < 0.05). Discussion: The results of this current study indicate that muscle strength and muscle power can be improved by increasing the appropriate amount of resistance during muscle contractions, taking into account the principles of specificity, overload, and progression. Conclusions: Strength training at 67–85% 1RM during preparation can effectively increase upper and lower body strength and power in Thai national swimmers.