Home > Journals > The Journal of Sports Medicine and Physical Fitness > Past Issues > Articles online first > The Journal of Sports Medicine and Physical Fitness 2020 Apr 06



To subscribe PROMO
Submit an article
Recommend to your librarian


Publication history
Cite this article as



The Journal of Sports Medicine and Physical Fitness 2020 Apr 06

DOI: 10.23736/S0022-4707.20.10335-9


language: English

Occlusion technique in swimming: a training method to improve exchange block time in swimming relays

Ana CONCEIÇÃO 1, 2, 3 , Aldo M. COSTA 2, 4, 5, António J. SILVA 2, 6, Pedro SOBREIRO 3, 7, Hugo LOURO 1, 2

1 Sport Sciences School of Rio Maior, Rio Maior, Portugal; 2 Research Center in Sports Sciences, Health and Human Development, Vila Real, Portugal; 3 CIEQV - the Life Quality Research Centre, Santarém, Portugal; 4 Department of Sports Sciences, University of Beira Interior, Portugal; 5 Health Sciences Research Centre (CICS-UBI), Portugal; 6 University of Trás-os-Montes and Alto Douro, Vila Real, Portugal; 7 Sport Sciences School of Rio Maior, Rio Maior, Portugal


BACKGROUND: Swimming relay events have the concern regarding a good start is shared between the incoming and outgoing swimmers. The aim of this study was to evaluate changes in exchange block time (EBT) for swimming relay events as a result of a four-week training programme using the occlusion technique.
METHODS: Twenty-eight national swimmers, 12 males (age: 17±1.83 years) and 16 females (age: 19.94±5.65 years) participated in this study. Subjects were required to undergo a training programme on visual perception in relay swimming over the course of four weeks; they watched videos corresponding to the last movements of a swimmer
during a 4×100m freestyle relay event. The videos were presented with temporal occlusion corresponding to predetermined approaching distances (7.5m, 5.0m, and 2.5m). Swimmers were required to simulate a typical position for exiting the block and to estimate the time-to-contact of the incoming swimmer. The EBT was collected during a
real 4x100m freestyle competition before and after the application of the training programme.
RESULTS: Female swimmers showed a decreased in EBT, with an improvement of 1.42%, despite there not being a significant difference (p= 0.68). The male swimmers had a higher improvement in EBT after the training, with a decrease of 13.34% (p= 0.68).
CONCLUSIONS: Visual perception practice using video occlusion techniques seems to have a positive effect. On EBT in swimming relay events, particularly in female swimmers.

KEY WORDS: Temporal occlusion; Visual perception; Relay event; Exchange block time; Swimming

top of page