Hazwani Ahmad, Yusof@ Hanafi
(2009)
The effects of two relaxation
techniques on psychomotor,
psychological and physiological
variables following repeated submaximal intensity exercise among school athletes.
Other.
Universiti Sains Malaysia.
(Submitted)
Abstract
The present study was undertaken with an objective to investigate the effects of two
relaxation techniques on selected psychomotor (choice reaction time), psychological (rating
of perceived exertion (RPE) and physiological (heart rate, oxygen consumption (V02))
variables following repeated sub-maximal intensity exercise. Twenty four physically active
young males with the mean age of 14.1 ± 1.3 years, height 157.3 ± 6.1 em, weight 45.6 ±
7.2 kg, V02max 45.7 ± 4.2 ml.kg-1.min-1 and HRmax 205.9 ± 1.3 participated in this study.
They were randomly divided into one of the three groups: Autogenic relaxation {AGR),
progressive muscle rela'l(ation {PMR.) and a control group. AGR and PMR group were
tested in two experimental sessions; prior to and after relaxation training. However, the
control group performed the same experimental procedures except the relaxation training.
Each experimental session consists of four trials, where they had to cycle at 60% V02max
for I 0 minutes followed by 90% V02max for 2 minutes in each trial. Then, it is followed by
3-minute resting interval where choice reaction time (CRT) was tested. Furthermore, RPE,
heart rate, and V02 were recorded at the end of each trial. The results of two-way repeated
measure ANOV A revealed a non significant (p > .05) interaction between the groups across
the experimental trials in all of the selected parameters. However, results of the main effect
revealed a significant (p < .05) difference for experimental sessions for RPE and V02. Pair
wise comparison analysis revealed a significant (p < .05) reduction in RPE value from prexi
to post-intervention sessions for PMR group and a significant (p < .05) decrease in the
value ofV02 from pre- to post-intervention exercise for AGR and control groups. Thus, this
study concluded that both relaxation techniques did not differ in terms of choice reaction
time, RPE, V02 and heart rate following repeated sub-maximal intensity exercise.
However, when analysed separately, PMR appears to reduce RPE while AGR appears to
reduce vo2.
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