Metabolic and hormonal responses to a single session of kumite (free non-contact fight) and kata (highly ritualized fight) in karate athletes
Articolo
Data di Pubblicazione:
2012
Citazione:
Metabolic and hormonal responses to a single session of kumite (free non-contact fight) and kata (highly ritualized fight) in karate athletes / S. Benedini, S. Longo, A. Caumo, L. Luzi, P.L. Invernizzi. - In: SPORT SCIENCES FOR HEALTH. - ISSN 1824-7490. - 8:2-3(2012 Dec), pp. 81-85. [10.1007/s11332-012-0132-7]
Abstract:
Background Several studies report martial arts as a good
model for investigating neuroendocrine responses to competitive
fighting. However, little is known on the metabolic
responses elicited by elite athletes during fighting. In particular,
the metabolic picture in elite athletes of martial arts
is little known.
Aim In the present study, our aim was to investigate the
acute effects of a session of karate practice on the glucoseinsulin
system.
Subjects and methods Ten healthy individuals (6M/4F;
BMI: 22.1 ± 0.7 kg/m2; 21.9 ± 1.1 years, mean ± SE)
who practice karate in national or international competitions
were enrolled. All participants completed two
experimental trials in a randomised-crossover fashion. A
basal blood sample was collected from each athlete to
assess plasma glucose, insulin, cortisol, testosterone and
catecholamines, before karate training session. In two
separate days, another blood sample was collected from
each participants after 3 min of real fighting (kumite) and
3 min of ritualized simulation of combat (kata).
Results In both trials, plasma glucose resulted to be
higher at the end the of performance compared to the
basal (p\0.001 after kumite and p\0.02 after kata).
In contrast, insulin was similar in the basal and after physical
activity in the two trials. Catecholamines were higher after
kata and kumite sessions with respect to the basal values
(p\0.04) and, in particular, epinephrine post-kumite values
were much greater than those measured after kata.
Conclusions Our results indicate that unlike performances
of karate (kumite and kata) elicit different plasma
glucose increases. In particular, we found that glucose and
epinephrine concentrations increased more after kumite
than after kata
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Glucose ; Catecholamines ; Insulin ; Testosterone
Elenco autori:
S. Benedini, S. Longo, A. Caumo, L. Luzi, P.L. Invernizzi
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