Original scientific paper
https://doi.org/10.69589/hsv.39.2.6
Validity and reliability of a mobile application for velocitybased training (vbt) in the bench press exercise
Antonio Šagovac
; University of Zagreb Faculty of Kinesiology
Marijo Baković
; University of Zagreb Faculty of Kinesiology
Abstract
The aim of this study was to determine the validity and reliability of Metric VBT mobile application during the bench press exercise. The research was attended by fifteen male participants (age 24.2 ± 1.6 years; height 183.8 ± 7.51 cm; weight 87.8 ± 8.5 kg) with experience in strength training and bench press exercise for at least two years. Participants were required to perform three maximally fast concentric repetitions at loads of 45%, 60% and 75% of 1RM in the bench press exercise. Movement velocity was simultaneously recorded using the Vitruve measuring device and the Metric VBT mobile application. Results showed a statistically significant (p < 0.05), very strong correlations of the total number of repetitions for the variables of mean velocity (r = 0.93), peak velocity (r = 0.91) and strong correlations for range of motion (r = 0.75). Also, there was a statistically significant (p < 0.05) medium to very strong correlation for individual loads in the variables of mean velocity (r = 0,47 to 0,89), peak velocity (r = 0,79 to 0,81) and range of motion (r = 0,71 to 0,79). On the other side, reliability for individual repetitions measured by intraclass correlation coefficient (ICC) indicates in existence of statistically significant (p < 0.05) excellent reproducibility of results for mean velocity (ICC = 0,93 to 0,95), peak velocity (ICC = 0,89 to 0,97) and range of motion (ICC = 0,95 to 0,97). Variation of results within one subject for individual loads measured using the coefficient of variation (CV) indicates an acceptable level of variability (<10%) for mean velocity (CV = 3.91 to 7.09%), peak velocity (CV = 4.90% to 9.41%) and range of motion (CV = 3.07% to 3.91%). Ultimately, the obtained results support the use of the Metric VBT mobile application to track movement velocity in the bench press exercise.
Keywords
validity, reliability, velocity – based training, VBT, bench press
Hrčak ID:
326493
URI
Publication date:
29.12.2024.
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