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Advisor(s)
Abstract(s)
This study aimed to: (i) verify the within-subject effect of the dominant and non-dominant upper limb propulsion
during consecutive arm-pulls through discrete (average) and continuous analysis (SPM), and; (ii) compare young
swimmers’ propulsion between both upper limbs through discrete (average) and continuous analysis (Statistical
Parametric Mapping – SPM). The sample consisted of 17 young male swimmers (age = 16.02 ± 0.61-years) who
regularly participate in national and international level competitions. A set of kinematic and propulsion variables
were measured during a 25-m maximal trial in front-crawl. Statistical analysis of propulsion was performed using
discrete variables and through SPM. Swimming velocity showed a significant decrease over time. A significant
interaction between the “time” (consecutive arm-pulls) and “side” (dominant vs. non-dominant) effects was
observed in both statistical analyzes. Only the dominant upper limb demonstrated a significant “time” effect with
a significant difference (p < 0.05) between the first and third arm-pulls. SPM indicated that the “time” effect was
observed between the ~ 34% and ~ 42% of the arm-pull. The differences between the first and third arm-pull
were verified between the ~ 32% and ~ 43% of the arm-pull. A non-significant “side” effect was verified in both
analyzes. Therefore, SPM analysis provided more sensitive and accurate outputs than discrete analysis. This will
allow coaches to design specific training drills focused on specific moments of the arm-pull
Description
Keywords
Swimming Technique Propulsion Training Performance
Citation
Morais, J.E.; Barbosa, Tiago M.; Lopes, Tiago J.; Gourgoulis, Vassilios; Nikodelis, Thomas; Marinho, D.A. (2023). Analysis of upper limb propulsion in young swimmers in front-crawl through Statistical Parametric Mapping. Journal of Biomechanics. EISSN 1873-2380. 159, p. 1-4
Publisher
Elsevier