Abstract:
To date there is no documented procedure to extrapolate findings of an
isometric nature to a whole body performance setting. The purpose of this study
was to quantify the reliability of perceived exertion to control neuromuscular
output during an isometric contraction.
21 varsity athletes completed a maximal voluntary contraction and a 2 min
constant force contraction at both the start and end of the study. Between pre
and post testing all participants completed a 2 min constant perceived exertion
contraction once a day for 4 days.
Intra-class correlation coefficient (R=O.949) and standard error of
measurement (SEM=5.12 Nm) concluded that the isometric contraction was
reliable. Limits of agreement demonstrated only moderate initial reliability, yet
with smaller limits towards the end of 4 training sessions.
In conclusion, athlete's na"ive to a constant effort isometric contraction will
produce reliable and acceptably stable results after 1 familiarization sessions has
been completed.
