Acta of bioengineering and biomechanics · 2026
Effect of a water rescue course on lower limb power parameters and functional performance in the aquatic environment in women.
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Kruzołek Piotr, Kuberski Mariusz, Konarski Jan, Wasik Jacek
Аннотация
PURPOSE: The aim of this study was to assess the effect of completing a water rescue course on lower limb power parameters assessed using the countermovement jump (CMJ) test and on performance on task-based tests in the water.
METHODS: Nineteen female lifeguard candidates (aged 18.68 ± 5.89 years) participated in the study. A repeated measures design was used, with assessments conducted before (PRE) and after course completion (POST). The following CMJ variables were analyzed: jump height, push-off force, landing force, maximum concentric power, maximum speed, and take-off velocity. Functional performance in the water was assessed using tests in the 50 m, freestyle, front crawl, breaststroke, and backstroke.
RESULTS: After completing the course, significant improvements were observed in selected CMJ parameters, including jump height (+8.47%; p = 0.008), rebound force (+23.42%; p = 0.006), maximum concentric power (+8.72%; p = 0.047), maximum velocity (+2.81%; p = 0.017), and rebound speed (+3.77%; p = 0.022). In the water rescue trials, significant reductions in completion times were observed for the front crawl (-4.23%; p = 0.013), 50 m kick (-5.48%; p < 0.001), two-hand pull (-7.30%; p = 0.004), one-handed chin pull (-5.40%; p < 0.001), and chest pull (-3.89%; p = 0.006).
CONCLUSIONS: Participation in a water rescue course significantly improves both lower limb strength and functional performance in the water. However, transfer of lower limb strength from land-based tasks to rescue tasks is moderate, and performance in the water depends more on specific functional adaptations and task-specific skills than on limb strength.
METHODS: Nineteen female lifeguard candidates (aged 18.68 ± 5.89 years) participated in the study. A repeated measures design was used, with assessments conducted before (PRE) and after course completion (POST). The following CMJ variables were analyzed: jump height, push-off force, landing force, maximum concentric power, maximum speed, and take-off velocity. Functional performance in the water was assessed using tests in the 50 m, freestyle, front crawl, breaststroke, and backstroke.
RESULTS: After completing the course, significant improvements were observed in selected CMJ parameters, including jump height (+8.47%; p = 0.008), rebound force (+23.42%; p = 0.006), maximum concentric power (+8.72%; p = 0.047), maximum velocity (+2.81%; p = 0.017), and rebound speed (+3.77%; p = 0.022). In the water rescue trials, significant reductions in completion times were observed for the front crawl (-4.23%; p = 0.013), 50 m kick (-5.48%; p < 0.001), two-hand pull (-7.30%; p = 0.004), one-handed chin pull (-5.40%; p < 0.001), and chest pull (-3.89%; p = 0.006).
CONCLUSIONS: Participation in a water rescue course significantly improves both lower limb strength and functional performance in the water. However, transfer of lower limb strength from land-based tasks to rescue tasks is moderate, and performance in the water depends more on specific functional adaptations and task-specific skills than on limb strength.