Official news: Barcelona’s Coutinho strained his left thigh. Why does a footballer’s thigh strain? The movement of the thigh in any direction is mainly completed by the joint action of the front and rear muscles. When we do squats, we can only practice the quadriceps muscles of the front thigh muscles, but the hind thigh muscles are often strained. This is because when kicking a shot, the quadriceps in front of the thigh will exert force, driving the calf and foot to shoot the football. However, the posterior thigh muscles behind the thigh will pull the calf with all their strength to prevent it from flying out and protect the knee joint. The former is called the active muscle, the latter is called the antagonist muscle; the former is like a throttle, and the latter is like a brake. They are mutually dependent, mutually restrictive, and contradictory. Therefore, the best way to prevent thigh strain is to balance the front and back muscles of the thigh. Comrades who have repeated bad thigh strains should practice donkey kicks to ensure their effectiveness!
官方新闻：巴塞罗那的库蒂尼奥拉伤了他的左大腿。足凯发国际首页入口球运动员的大腿为什么会绷紧？ 大腿在任何方向上的运动主要是通过前后肌肉的联合动凯发国际首页入口作来完成的。 下蹲时，我们只能练习大腿前部肌肉的股四头肌，但是大腿后部的肌肉经常拉紧。 这是因为踢射时，大腿前面的股四头肌会施加力量，从而驱动小腿和足部射击足球。 但是，大腿后部的大腿后部肌肉会尽力拉小腿，以防止小腿飞出并保护膝关节。 前者称为活动肌，后者称为拮抗肌；前者就像油门，后者就像刹车。它们是相互依存，相互制约和矛盾的。 因此，防止大腿拉伤的最佳方法是平衡大腿的前后肌肉。大腿反复拉伤的同志们应该练习驴踢以凯发国际首页入口确保其有效性！