Too tight a belt will increase abdominal pressure.
Korean researchers in inje university studied the relationship between waistband and knee joint diseases in 12 healthy men. The researchers asked all participants to wear belts, and the tightness around the waist decreased by 10%. It was found that when the participants got up, the tight belt changed the activity pattern of their upper abdominal muscles.
According to the researcher's analysis, too tight belt will increase the pressure on the abdomen, make the spine more rigid and increase the risk of pathological changes. Not only that, too tight belt will also affect the center of gravity of the body and the normal position and direction of the pelvis, thus greatly affecting gait and increasing the pressure on the knee joint. This study takes men as the research object, and the influence of belt tightness on women and obese people needs further study.
Abdominal obesity increases the burden on knee joint.
In the past, the first cause of knee arthritis was strain caused by overwork in youth, but in recent years, obesity has become one of the most important factors of the disease, which is related to the increasing number of obese people, especially abdominal obesity. Because the abdominal muscles are weak, the abdomen bulges and the body's center of gravity moves forward. In order to adapt to this change, the lumbar lordosis increases, the muscles of the lower back are overstretched, the burden on the knee joint increases, the wear and aging of the joint is accelerated, and arthritis is caused. Under normal circumstances, articular cartilage covers the bone surface like a cushion, which can cushion the vibration pressure during joint movement, reduce the friction during movement and make the joint move freely. But when the joint is overloaded or excessively worn, the cartilage surface will be damaged. In addition, abnormal hormone levels and hormone metabolism in obese patients can also lead to cartilage metabolic dysfunction and induce osteoarthritis.
What is more important than weight is the waist-hip ratio.
So, how to determine whether the abdomen is obese? There is a simple calculation method. Measure waist circumference and hip circumference when standing, and divide waist circumference by hip circumference to get waist-hip ratio. Hip circumference is subject to the maximum hip circumference, and waist circumference is measured through navel. The upper limit of waist-hip ratio is 0.85~0.9 for men and 0.75~0.8 for women. Exceeding this range means abdominal obesity.
Usually, the greater the waist-hip ratio, the more visceral fat. Waist-hip ratio exceeds the standard, indicating that fat may be concentrated in internal organs. Abdominal obesity is very dangerous and can easily lead to various diseases, including cardiovascular and cerebrovascular diseases and diabetes.