マウスプロテクターが競技者の運動能力に及ぼす影響 第２報 呼吸機能への影響について

Abstract

Custom-made mouth protectors were inserted into the mouth of seven baseball players, and the effects on respiratory function while playing baseball were studied. Actually, exhalation gas was gathered and analyzed using a gradual load increase method.The results were as follows:1. Heart rate was not influenced at all, even though mouth protectors were inserted.2. Ventilation with mouth protectors was less than without them, but with no significant differences except at 140 and 160 m/min treadmill speed.3. Vo2between 140 and 220 m/min of treadmill speed with mouth protectors and V02per weight were significantly larger than without them.4. Ventilation per Vo2between 140 and 220 m/min of treadmill speed with mouth protectors was significantly lower than without them.5. Oxygen pulses without mouth protectors increased remarkably between 200 and 220 m/min, while with mouth protectors they increased earlier, between 160 and 180 m/min.6. No large differences were found in Vco2, between with and without mouth protectors.7. Mouth protector can be used in the mouth without athletic impairment.