ORIGINAL
ARTICLE – abstractThere
is no difference in balance impairment after intermittent and continual
exercise Erika
Zemková 1, Dagmar
Dzurenková 2
1 Dept.
of Sport Kinanthropology, Faculty of Physical Education and Sport
2
Dept.
of Sports Medicine, Physiotherapy and Rehabilitation, Medical Faculty
Comenius, Slovakia
Abstract
The
study compares parameters of balance prior to
and after intermittent and continual exercise bouts eliciting the same
ventilation. A group of 14 cyclists underwent in different
days either continuous or intermittent exercise on the cycle ergometer.
In the first case, an initial workload of 75 W was increased by 25 W
per minute up to a maximum. In the second, the periods of exercise bout
and active rest were alternated until ventilation corresponding with
previously instituted exercise was reached. Two different intensities
were employed (4 W / 2 W and 5.5 W / 3 W per kg of body weight,
respectively). Thirty seconds prior to and one minute after exercises
the COP velocity was registered at 100 Hz by means of posturography
system FiTRO Sway check based on dynamometric platform. While
exercising and standing on stabilographic platform, cardiorespiratory
parameters were monitored using breath-by-breath system Spiroergometry
CS 200. As intended, there were no differences in the peak of
ventilation after intermittent and continual exercise of lower (98.3
± 12.3 l/min and 95.7 ± 11.8 l/min, respectively)
and of higher intensity (150.6 ± 15.4 l/min and 150.8
± 14.7 l/min, respectively). In both cases, no differences
in the peak of COP velocity and in speed of its readjustment after
intermittent and continual exercise were found. However, more profound
balance impairment was observed after both exercises of higher (42.7
± 5.4 mm/s and 39.5 ± 4.7 mm/s, respectively)
than lower intensity (27.8 ± 2.8 mm/s and 27.1 ±
3.3 mm/s, respectively). These finding indicate that rather than type
of exercise its intensity plays an important role in balance impairment.
Key
words:exercise,
ventilation, postural stability
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