The effectiveness of preparatory strength training on muscle strength and power in male swimmers
DOI:
https://doi.org/10.47197/retos.v78.118503Keywords:
Swimmers, strength training, muscle performanceAbstract
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.
References
Amra, S., Barbosa, T. M., Negra, Y., Hammami, R., Khalifa, & Chortane, S. G. (2021). The effect of concurrent resistance training upper body strength, sprint swimming performance and kinematics in competitive adolescent swimmers. A randomized controlled trial. Int. J. Environ. Res. Public Health, 18, 10261. 1 – 13. https://doi.org/10.3390/ijerph181910261
Baechle, T. R., & Earle, R. W. (2008). Essentials of strength training and conditioning. 2008. Human kinetics.
Behringer M., Heede, A. V., Yue Z., Mester J. (2010) Effects of resistance training in children and adolescents: a meta-analysis. Pediatrics, 126(5), 1199-1210. https://doi.org/10.1542/peds.2010-0445
Blagrove, R. C., Brown, N., Howatson, G., & Hayes. P. R. (2020). Strength and conditioning habits of competitive distance runners. J Strength Cond Res, 34(5), 1392-1399. https://doi.org/ 10.1519/JSC.0000000000002261
Bompa, T. O., & Carrera, M. (2005). Periodization training for sports. Auckland New Zealand: Human Kinetics.
Crowley, E., Harrison, A., Lyons, M. (2017). The impact of resistance training on swimming performance: A systematic review. Sports medicine. 47(11), 2285-2307. https://doi.org/10.1007/s40279-017-0730-2
Day, M. L., McGuigan, M. R., Brice, G., & Foster, C. (2004). Monitoring exercise intensity during resistance training using the session RPE scale. The Journal of Strength & Conditioning Research, 18(2), 353-358. https://doi.org/10.1519/R-13113.1
Fone, L., & van den Tillaar, R. (2022). Effect of different types of strength training on swimming performance in competitive swimmers: a systematic review. Sports medicine-open, 8(1), 19.
Graham, T., & Cleather, D. J. (2021). Autoregulation by “repetitions in reserve” leads to greater improvements in strength over a 12-week training program than fixed loading. The Journal of Strength & Conditioning Research, 35(9), 2451-2456.
Haff, G. G., & Triplett, N. T. (2015). Essentials of strength training and conditioning 4th edition: Human kinetics.
Hiruntrakul, A., Kaewwong, T., Kaewwong, S. C., Rirermkul, P., Jomkokkruad, N., & Jansupom C. (2025). Effectiveness of a 6-week core muscle high-intensity interval training program on core stability and power in swimmers. HUMAN MOVEMENT, 26(1), 115 – 124. https://doi.org/10.5114/hm/197233
Hou, C. F., Hsu, C. W., Fuchs, P. X., & Shiang, T. Y. (2025). Estimation of maximum lower limb muscle strength from vertical jumps. PLOS ONE. 20(2), 1-15. https://doi.org/10.1371/journal.pone.0316636
Jason, R. K. (2024). The effects of strength training on distance running performance and running injury prevention. Journal of Physical Education and Sport. 24(10), 1352-1367. https://doi.org/10.7752/jpes.2024.10259
Jansupom, C., Kaewwong, T., Kaewwong, S. C., Rirermkul, P., Bumrung, N., & Hiruntrakul, A. (2025). Blood lactate level and anaerobic function response to core muscle high intensity interval training. International Journal of Human Movement and Sports Sciences. 13(2), 390-396. https://doi.org/10.13189/saj.2025.130216
Johansen, K. K., Hulme, A., Damsted, C., Ramskov, D., & Nielsen, R. O. (2017). Running injury development: the attitudes of middle- and long-distance runners and their coaches. Int J Sports Phys Ther, 12(4), 634-641. https://pubmed.ncbi.nlm.nih.gov/28900570/
Kwok, W. Y., So, W. C. L., Psycharakis, S. G., & Ng, S. S. M. (2025). The effect of the 8-week core muscle training in swimming time, swimming force and core muscle activity among swimmers: A randomized controlled trial. Journal of Sports Science and Medicine. 24, 755 – 763. https://doi.org/10.52082/jssm.2025.755
Leite, M. A. F. D., Sasaki, J. E., Lourenco, C. L. M., Zanetti, H. R., Mota, G. R. D., & Mendes, E. L. (2020). Using the medicine ball throw test to predict upper limb muscle power: validity evidence. Rev Bras Cineantropom Hum. 22, e63286, 1-5. https://doi.org/10.1590/1980-0037.2020v22e63286
Llanos-Lagos, C., Ramirez-Campillo, R., Moran, J., & Sáez de Villarreal, E. (2024). The effect of strength training methods on middle-distance and long-distance runners’ athletic performance: a systematic review with meta-analysis. Sports Med, 54(7), 1801-1833. https://doi.org/10.1007/s40279-024-02018-z
Li, F., Nassis, G. P., Shi, Y., Han, G., Zhang, X., Gao, B., & Ding, H. (2021). Concurrent complex and endurance training for recreational marathon runners: effects on neuromuscular and running performance. Eur J Sport Sci, 21(9), 1243-1253. https://doi.org/10.1080/17461391.2020.1829080
Nugent, F. J., Flanagan, E. P., Darragh, I., Daly, L., & Warrington, G. D. (2022). The effects of high repetition strength training on performance in competitive endurance athletes: A systematic review and meta-analysis. The Journal of Strength & Conditioning Research. 37(6), 1315-1326. https://doi.org 10.1519/JSC.0000000000004217
Souza, D., Barbalho, M., & Gentil, P. (2020). The impact of resistance training volume on muscle size and lean body mass: to infinity and beyond? Human Movement, 21(4), 18-29. https://doi.org/10.5114/hm.2020.94199
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