They beliee A, which could hae many underlying causes, may be triggered by intense exercise or that endurance sports could promote the arrhythmia along with genetic or enironmental factors.

• 他们相信可能有很多潜在原因的心室心率不齐，可以被耐力运动引发，或者耐力运动可以促使遗传性的或者环境因素导致的心率不齐发生。