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

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

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

Autor / Fonte:Helmi Chaabane, Bessem Mkaouer, Emerson Franchini, Nafaa Souissi, Mohamed Amine Selmi, Yassine Nagra, Karim Chamari. Asian Journal of Sports Medicine 2014. 5(1):21-29.
Link: http://asjsm.tums.ac.ir/files/journals/1/articles/466/public/466-2232-4-PB.pdf