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Surface electromyographic measurements on land prior to and after 90 minutes of submersion (swimming) are highly reliable

Tijdschriftbijdrage - Tijdschriftartikel

The main objective of the present study was to investigate the reliability of surface
electromyography (sEMG) measurements on land before and after a prolonged
submersion of 90 min (including 60 min of easy swimming) using minimal measures for
waterproofing the electrodes. Additionally, the study aimed to compare sEMG on dry-land
and in water from muscles which are of high relevance for technical studies in swimming.
Isometric maximal voluntary contractions (MVC) on land and in water were collected from
eight muscles on the right side of the body in 12 healthy participants (6 women and 6
men). Repeated measures analyses of variance (general linear model ANOVA) and
Friedman's ANOVA showed no significant differences in the peak amplitude MVC scores
between land pre and post measurements for all muscles, p>.05. The mean of the
Intraclass correlation coefficient (1,1) for land pre and land post was .985 with (95% Cl =
.978 - .990), for land pre and water pre .976 (95% Cl = .964 - .984) and for land pre and
post, water pre and post .981 (95% Cl = .974 - .987). The study identified that sEMG
measurements are reliable even after 60 to 90 min of water submersion. The use of this
method can therefore be considered a reliable assessment for muscle activation during
prolonged water activity without the need for extra waterproofing which may restrict the
participant's range of motion.
Tijdschrift: J. Electromyography Kinesiology
ISSN: 1050-6411
Issue: 5
Volume: 24
Pagina's: 698-703
Trefwoorden:electromyography, submersion, reliability
  • VABB Id: c:vabb:388716
  • Scopus Id: 84908345839