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Asian J Sports Med. 2014 Mar;5(1):21-9. Epub 2013 Sep 20.

Physiological Responses and Performance Analysis Difference between Official and Simulated Karate Combat Conditions.

Author information

1
Tunisian Research Laboratory "Sport Performance Optimisation", National Centre of Medicine and Science in Sport, Tunisia.
2
Higher Institute of Sports and Physical Education, Manouba University, Tunis, Tunisia.
3
Martial Arts and Combat Sports Research Group, School of Physical Education and Sport, University of Sao Paulo, Sao Paulo, Brazil; Faculté de Science du Sport, Université de Montpellier I, France.
4
Biomechanics laboratory, national Institute of Orthopedics "M.T. Kassab Tunisia"
5
Research Unit « School and University Sportive Practices and Performance », High Institute of Sports and Physical Education, Kef, University of Jendouba, Tunisia.
6
"Sport Performance & Health" Higher Institute of Sport and Physical Education of Ksar Said, Tunis, Tunisia.
7
Research and Education Centre, Aspetar, Qatar Orthopedic and Sports Medicine Hospital, Doha, Qatar.

Abstract

PURPOSE:

This study aimed to compare physiological responses and time-motion analysis between official and simulated karate combat.

METHODS:

Ten high-level karatekas participated in this study, which included official and simulated karate combat.

RESULTS:

Karatekas used more upper-limb attack techniques during official combat compared to simulated ones (6±3 vs 3±1; P=0.05, respectively). For official and simulated karate matches, the numbers of high-intensity actions (i.e. offensive and defensive fighting activity) were 14±6 and 18±5, respectively (P>0.05), lasting from <1s to 5s each. Total fighting activity phase was lower during official compared to simulated matches (21.0±8.2s vs 30.4±9.9s, P<0.01, respectively). Effort (10.0±2.8s) to rest (11.9±2.7s) ratio (E:R) was 1:1 and high-intensity actions (1.6±0.3s) to rest (11.9±2.7s) ratio was higher than 1:7 during simulated combat. During official karate match, the activity and rest duration were 10.0±3.4s and 16.2±4.1s, respectively (E:R ratio 1:1.5), while high-intensity actions were 1.5±0.3s, resulting in an E:R ratio of 1:11. Blood lactate concentration was higher during official (11.14±1.82 mmol.l(-1)) compared to simulated karate combat (7.80±2.66 mmol.l(-1)) (P<0.05). Subjective perceived exertion differed significantly between official and simulated combat (14±2 vs. 12±2; P<0.05, respectively). The majority of karatekas' perceived exertion was higher in the lower limb muscle groups irrespective of the karate combat condition.

CONCLUSION:

Official and simulated matches differ considerably, therefore coaches should create new strategies during training sessions to achieve the same effort and pause profile of competitive matches and/or that athletes should be submitted to frequent competitions to adapt themselves to the profile of this event.

KEYWORDS:

Combat Sport; Karate; Physiological Responses; Time-motion Analysis

PMID:
24868428
PMCID:
PMC4009084

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