Muscle spasms are commonly referred to as cramps, which are involuntary muscle contractions. During exercise, the calf muscle is most likely to have muscle spasms, followed by the flexor hallucis muscle and the flexor digitis muscle of the plantar. Muscle spasms are more common in soccer, basketball, and swimming sports.
(I) Cause
When you are exercising in a cold environment, if you do not prepare for activities, the body suddenly suffers coldness, and a large number of receptors on the skin are stimulated. The muscles are transmitted to the muscles through the nervous system, and the muscles are excited to cause cramps.
A lot of sweat during exercise, the body loses moisture and sodium, chlorine and other minerals, and changed the intramuscular environment, causing muscle spasms. In a fierce and intense training game, the muscles continue to shrink too quickly, so that muscle contraction and relaxation can not be coordinated and alternating, or forced exercise when the body fatigue, will affect the normal function of the muscles. In particular, athletic activities such as track and field and soccer are intense in the lower extremities. When the calf muscles are fatigued, sudden and forceful movements are prone to calf cramps.
(b) Signs
The local muscles are severely cramped, hardened, and unbearable. They are not easily relieved at one time, forcing the athlete to stop training or playing.
(III) Processing
An effective way to relieve muscle spasms is to passively stretch the jaw muscles. For example, when calf gastrocnemius muscles or plantar cramps occur, the wounded person takes a seated position and holds the forefoot of the cramped leg tightly with both hands, squatting the heel, straightening the knee joint, pushing the foot back firmly, and slowly pulling hard to lengthen the muscles behind the calf ( Repeat traction 2-3 times), then use your hands to rub, knead, etc. on the calf muscles. If the calf cramps can be combined with points "Venezuela", "Tingshan" points; flexor muscle or flexor muscles cramps can click "Yang Quan" point, and then the knee flexion and extension several times, cramps can ease muscles.
(d) Prevention
Strengthen physical exercise and improve the body's adaptability to cold. Before entering a fierce competition, make full preparations. For muscles prone to cramps, appropriate massage should be performed before exercise. When sweating excessively in summer sports, it is necessary to add salt in time for food, add some salt and glucose in the food before the match, and supplement calcium and vitamin B properly . Keep warm in winter sports. Fatigue and hunger are not suitable for vigorous activities.
Galvanized Gabion
Gabion,
a double-twisted wire mesh container of variable sizes, uniformly
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Material and Manufacture
Style 1 double-twisted mesh shall be manufactured from zinc-coated steel
wire conforming to Specification A641/A641M, Class 3 coating, soft
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Style 2 double-twisted mesh shall be manufactured from Zn-5A1-MM-coated
steel wire conforming to Specification A856/A856M, Class 3 coating, soft
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Style 3 double-twised mesh shall be manufactured from the same type of
metallic-coated steel wire as Style 1 with an additional PVC coating
extruded onto the metallic-coated steel wire.
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