Affiliations: [a] Department of Sports Theory, Jerzy Kukuczka Academy of Physical Education, Katowice, Poland | [b] Department of Tourism and Health in Biala Podlaska, Józef Piƚsudski University of Physical Education, Warsaw, Poland | [c] Department of Nutrition, Jerzy Kukuczka Academy of Physical Education, Katowice, Poland
Correspondence:
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Corresponding author: A. Maszczyk, Department of Sports Theory, Jerzy Kukuczka Academy of Physical Education, Mikolowska str. 72a, 40-064, Katowice, Poland. E-mail:a.maszczyk@awf.katowice.pl
Abstract: AIM OF STUDY: The aim of the current study was to investigate the
effects of different types of strength exercises on the posturographic
parameters as a postural stability indicators and selected plasma
catecholamine levels as a marker of sympathetic nerve activity in basketball
players. MATERIAL AND METHODS: The sample included 13 male, well-trained
basketball players, aged 22.3 ± 2.9 y, with a training experience of
8.6 ± 2.3 years. Participants performed three consecutive exercises in
successive weekly microcycles. The athletes performed isometric, concentric
and eccentric exercises, with random restriction. Postural stability of all
subjects was evaluated using a force plate before and after each exercise. RESULTS: The results revealed a significantly higher effect on the
range of sway (RoS) with eyes closed in medial/lateral direction after
concentric exercise and RoS with eyes closed in both directions after
eccentric and isometric exercises. A significantly higher effect on the
standard deviation of sway was observed in the anterior-posterior axis with
eyes closed (p= 0.041) and velocity of COP displacement with open eyes
(VCOP_OE) (p= 0.007) after the isometric exercises. A modulating effect of
the applied exercise types on plasma NA and A levels was not observed, and
the results demonstrated that serum 5HT was elevated in response to
concentric exercise while diminished in response to both isometric and
eccentric exercises. CONCLUSIONS: This study demonstrates that all types of applied
exercises impair posture control during single leg stance on a force plate
in basketball players but isometric exercise of proximal musculature to a
greater extent negatively affects posture control in comparison with distal
musculature. Moreover, among the investigated monoamines in well trained
athletes, 5HT predominantly took part in modulation of locomotor activity.
