运动前热身很重要,尤其是在寒冷的冬季,人体肌肉的伸展性下降,关节变得僵硬,如果热身不充分,很容易引起肌肉拉伤、扭伤及膝关节受损等。不热身易造成肌肉拉伤运动医学指出,肌肉主动强烈收缩或被动过度拉长所造成的肌肉微细损伤、肌肉部分撕裂或完全断裂,都称为肌肉拉伤。运动中的肌肉拉伤,大多是由于运动前的准备活动不充分所致,尤其是冬天天气寒冷,韧带和肌肉会更脆、更僵,肌肉比较紧。如果准备活动没做好,甚至没做准备活动就进行剧烈运动,就很容易受伤。 Pre-exercise warm-up is very important, especially in the cold winter, the decline of human muscle extensibility, joints become stiff, if not warm-up, it is likely to cause muscle strain, sprains and knee damage. Not warm-up can easily lead to muscle strain Sports Medicine pointed out that the muscles actively passive contraction or passive lengthening caused by muscle micro-damage, muscle part of the tear or complete rupture, are known as muscle strain. Muscle strain during exercise is mostly due to inadequate exercise preparation activities, especially in the cold winter, the ligaments and muscles will be more brittle, stiffer and tighter muscles. If the preparatory activity is not done well, even strenuous exercise without preparation activity can be very easily injured.