PLASMA CORTISOL AND TESTOSTERONE LEVELS AND PSYCHOMOTOR ABILITIES IN BOXERS DURING A LABORATORY TASK WITH A PUNCHING BAG
Journal Title: Medycyna Sportowa - Year 2008, Vol 24, Issue 1
Abstract
[b]Background.[/b] The objective of this study was threefold: (I) to examine choice reaction time and the force of blows in boxers who performed a laboratory task similar to a real 5-round contest, (II) to assess changes in blood cortisol (C), testosterone (T) and lactate (LA) levels following exertion, (III) to search possible relationships between performance and hormones.[b]Material and methods. [/b]Right-hand amateur boxers (n=33) varied by age and body mass underwent laboratory exertion, consisting of several blows into purpose-made bag. Capillary blood from the earlobe was sampled in the morning (8:00), 3 minutes prior to the task, and within 3 and 30 minutes of post-task recovery. Reactioon time and force were registered for each blow.[b]Results. [/b]Based on the total number of observations (33 subjects*5 rounds=165), significant differences (p<0.005) were observed between mean reaction time and mean maximal force for forward (left (591+/-81 msec. and 847+/-146N) and for backward (right) (658+/-67 msec. and 1246+/-215 N) hand. During post-task recovery C tended to increase, within +30 min. by 21%, in comparison to the pre-task value. In the first round, pre-task T negatively correlated with mean reaction, time for forward (r=0.494*), and for backward (r=-0.418*) hand. Mean post-task LA was +/- 1.6 mmo/L.[b]Conclusions. [/b]The results revealed hand-related differences in psycho-motor performances and linear relationships between T and reaction time.
Authors and Affiliations
Zbigniew Obmiński, Bohdan Karpiłowski, Krystyna Wiśniewska
Keywords
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