Mee, Jong Shun
(2004)
Effect of deep breathing training on exercise - induced changes in electrocardiogram (ecg) of the young normal volunteers.
Other thesis, Universiti Sains Malaysia.
Abstract
The aim of this study was to investigate the effect of deep breathing
training on exercise - induced changes in electrocardiogram {ECG) in normal
healthy volunteers. Subjects were divided into two groups - experimental group
and control group. The subjects from experimental group were asked to practice
deep breathing exercise for 15 minutes twice a day for consecutive 3 week
periods with different timing each week; while control group did not do deep
breathing exercise. The ECG (lead II) was recorded before and after performance
of physical exercise in cycle ergometer with 40 - 50 rpm and 20 Newton
resistances for 5 minutes.
The results show that, the amplitude of R wave increased in experimental
group and control group before physical exercise (p < 0.011) and the R wave
amplitude increased further after physical exercise only in experimental group (p
<0.001 ). The amplitude of P wave increased significantly (p < 0.003) after
physical exercise in both the groups, but there was no difference in the increase
between the control and experimental group. The amplitude of T wave was
increased significantly after physical exercise in both the groups (p < 0.001 ). The
mean values show that the increase in amplitude of T wave is more in control
group than in the experimental group. The duration ofT wave and RR interval
was decreased after physical exercise, and the decrease was similar in both the
groups. Other parameters did not show any significant change in both the groups.The more increase in the amplitude of R wave and less increase in the
amplitude of T wave in experimental group indicate that the deep breathing
training improves cardiac performance to cope up with the exercise stress.
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