在短跑途中跑中,髋是人体水平加速的主要内部动力来源。这个内部动力来源于髋关节的灵活性和控制关节的屈髋肌群和伸髋肌群强有力的收缩与协调的伸屈能力,这就使运动员在跑中产生自然放松,自然放松能增大肌肉的收缩力量,减少内阻力和热量消耗。 Running mid-way on the sprint, the hips are the main source of internal motivation for the body’s horizontal acceleration. This internal motivation is derived from the flexibility of the hip joint and the strong contractions and coordinated flexion and extension of the hip flexor muscles and extensor muscles that control the joints. This allows the athlete to relax spontaneously while in the running and naturally relax to increase muscle mass Contraction force, reduce internal resistance and calorie consumption.