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Advisor(s)
Abstract(s)
The purpose of this study was to compare the in-water force of young competitive swimmers using tethered
swimming and differential pressure sensors. Thirty-one swimmers (16 girls and 15 boys) were randomly assigned
to perform two in-water tests. Swimmers completed two maximum bouts of 25 m front crawl with a differential
pressure system and a 30 s maximum bout with an attached load cell (tethered-swimming). The peak force
(FPEAK, in N) of dominant and non-dominant upper limbs was retrieved for further analysis. Comparison between
methods revealed significant differences in all force variables (p ≤ 0.05) and the biases (mean differences) were
large in girls (FPEAK dominant, 45.89 N; FPEAK non-dominant, 43.79 N) and boys (FPEAK dominant, 67.26 N; FPEAK
non-dominant, 61.78 N). Despite that, simple linear regression models between the two methods showed significant
relationships with a moderate effect in all variables for girls, whereas in boys a high and moderate effect
was verified for FPEAK of dominant and non-dominant limbs (respectively). It seems that using pressure sensors
and tethered swimming leads to different FPEAK values in young competitive, where correction factors are needed
to compare data between both methods.
Description
Keywords
Hand force Tethered swimming Sensors Methods Correction factor
Pedagogical Context
Citation
Santos, Catarina C.; Costa, Mário J.; Forte, Pedro; Marinho, Daniel A. (2023). A comparison of load cell and pressure sensors to measure in-water force in young competitive swimmers. Journal of Biomechanics. ISSN 0021-9290. 160, p. 1-7
Publisher
Elsevier