TITLE:
Effects of Voluntary Apnea on Haemodynamic Responses during Groundwork Techniques of Judo
AUTHORS:
Jean Georges André Moulongo, Elvina Lys Surêche Massamba, Alphonse Massamba, Bernard Packa Tchissambou
KEYWORDS:
Apnea, Heart Rate, Arterial Pressure, Groundwork Technique of Judo
JOURNAL NAME:
World Journal of Cardiovascular Diseases,
Vol.6 No.9,
September
21,
2016
ABSTRACT: Context: Several studies were conducted on physiology of apnea in scuba diving. No survey has been reported in fighting sports. Objective: To evaluate cardiovascular variations misled by voluntary apnea during groundwork techniques of judo training. Methods: The temporal evolution of heart rate and modifications of the blood pressure have been investigated during cross sectional and experimental study. A total of 28 Congolese judoists took part in the study. The voluntary apnea was achieved by a judoist to try to carry out two kinds of groundwork (hon-gesagatame and kamishiho-gatame). According to the case, Student t test and analysis of variance were used for comparing data. Multivariate analysis was used to evaluate the effect of “type of groundwork technique × category of weight”. Results: Between 0 and 3 seconds, tachycardia has been observed during the static groundwork techniques and then bradycardia occurred to 3 - 9 seconds for the dynamic groundwork techniques : +6.8% of the rest frequency versus -9.4% for hon-gesa; +4.9% versus -13.7% for kami-shiho. Thereafter, it followed a fluctuation of heart rate of 9 - 15 seconds. Beyond, a stagnation was noted for hongesa, whereas a minimal increase (