Abstract
Background: Rare are the studies which treated the effect of training and successive fights of karate on haemodynamic and blood lactate concentrations responses. Objectives: To evaluate and analyze the aerobic capacity of elite Congolese karate athletes, as well as their haemodynamic and blood lactate concentrations responses changes during Ruffier test and stimulated competition. Methods: Twelve karate athletes (6 seniors and 6 juniors) took part in the study. These karate athletes were selected within the national karate teams (senior and junior) of Congo-Brazzaville. Anthropometric, bioenergetic and haemodynamic (HR, SBP, DBP) parameters and blood lactate [La] concentrations were measured at rest, immediately after the end of Ruffier test and each fight (n = 3). Results: Peak aerobic power (PAP) and maximum oxygen uptake (VO2 max) values averaged 437 ± 23 watts and 57.61 ± 2.2 ml/kg/mn, values varying as function as age division (senior vs junior). The recovery index was 5.4 ± 3.4 for juniors and 6.8 ± 3.2 for seniors. SBP, HR and [La] concentrations increased significantly during fights, compared to the resting values. HRmax was 182.3 ± 1.6 bpm (89% theoretical HRmax) for seniors and 182.0 ± 13.5 bpm (86% theoretical HRmax) for juniors. Peak [La] concentrations were 10.3 ± 1.5 mmol/l for seniors and 10.8 ± 1.2 mmol/l for juniors. Conclusion: Congolese karate athletes call upon high levels of the anaerobic and aerobic capacities. The karate training program in Congo should emphasize more gold improvising lower body anaerobic power and endurance.
Highlights
Karate is a martial art of Japanese origin, attack and defense using the arms and legs [1] [2]
Anthropometric, bioenergetic and haemodynamic (HR, systolic blood pressure (SBP), diastolic blood pressure (DBP)) parameters and blood lactate [La] concentrations were measured at rest, immediately after the end of Ruffier test and each fight (n = 3)
This study shows mainly that the specific karate exercises and the simulated competition significantly affect the evolution of heart rate (HR), SBP and [La] concentrations in the athlete
Summary
Karate is a martial art of Japanese origin, attack and defense using the arms and legs [1] [2]. It is to fill this gap that we carried out a metabolic and cardiovascular follow-up in the karate athletes, during the preparation of the national championship This exploratory work evaluates haemodynamic and blood lactate concentrations responses during the training and the fights in Congolese karate athletes according to the age category. The objectives of this study were: 1) to evaluate and analyze peak aerobic power (PAP) and maximum oxygen consumption (VO2 max) of Congolese karate athletes; 2) to determine their recovery capacity, following a submaximal exercise; 3) to evaluate and analyze the variations of heart rate, blood pressure and blood lactate concentrations throughout fights. Objectives: To evaluate and analyze the aerobic capacity of elite Congolese karate athletes, as well as their haemodynamic and blood lactate concentrations responses changes during Ruffier test and stimulated competition. The karate training program in Congo should emphasize more gold improvising lower body anaerobic power and endurance
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