Low back pain: Low back pain refers to pain in the lower back, lumbosacral and sacroiliac regions, sometimes accompanied by sensory or radiating pain in the lower extremities. Because the majority of low back pain manifests in the lower lumbar spine and the lumbosacral and sacroiliac regions. Low back pain is the most common disorder of the human spine. Lesions of any of the skin, subcutaneous tissues, muscles, ligaments, spine, ribs, spinal cord and spinal membranes of the low back can cause low back pain.
More exercise can lead to low back pain, less exercise can also be roughly the occurrence of low back pain, so how long exercise, how much exercise intensity is the best for the lumbar spine? Different intensities of physical activity occurring in low back pain are also different. Low intensity and high intensity are high risk factors for low back pain, as are the two sides of the U-shaped structure. Moderate intensity is the best.
Difference between physical activity and exercise
Physical Activity (PA) is any physical movement caused by skeletal muscle contraction that results in energy expenditure. The concept of exercise (Exercise) is different from physical activity, and the former is subordinate to the latter. caspersen defines exercise as physical activity with final and stage goals, planned, organized, and repetitive, with the purpose of maintaining and/or improving physical fitness (Physical Fitness).
I. The relationship between low back pain and occupational factors
(1) Relationship with heavy work The high incidence of low back pain among workers in heavy industry, construction, mining and forestry may be related to the high spinal load and susceptibility to injury.
(2) Relationship with bending and twisting The incidence of low back pain is high among workers who are engaged in lifting and carrying heavy objects and repeatedly bending and twisting.
(3)Restrictive work positions and vibration The relationship between restrictive work positions and low back pain has received increasing attention in recent years, and prolonged sitting work is considered a high risk factor for low back pain.
(4) Other occupational factors The prevalence of low back pain is high in people who are engaged in monotonous and repetitive work in factory assembly lines. It was found that monotonous and repetitive work with less spare time activities is directly related to low back pain.
Long-term ambulatory work can easily lead to low back pain
Second, common causes of low back pain
1.Spinal low back pain.
①Posture problems of low back pain, such as poor sitting posture, prolonged ambulatory work, etc.;
② degenerative low back pain such as hyperplastic spondylitis, disc herniation, spinal stenosis, posterior lumbar joint disorders, etc;
③ inflammatory low back pain such as ankylosing spondylitis, tuberculous spondylitis, septic spondylitis, focal sacroiliac arthritis, etc.; ④ congenital malformations of low back pain such as hemivertebral body, lumbar sacralization, sacral lumbarization, spina bifida, etc;
⑤ Nutritional metabolic disorders of low back pain such as osteochondrosis, fluorosis, etc;
(6) traumatic low back pain such as vertebral fracture, muscle sprain, vertebral body slippage, etc;
(7) Atrophic low back pain;
(8) Endocrine abnormal low back pain such as osteoporosis, primary hyperparathyroidism, etc. Other spinal diseases of low back pain: such as deformity osteitis, youthful osteochondritis of the spine (youthful hunchback), etc.
2.Low back pain caused by paravertebral soft tissue diseases
①Lumbar muscle strain;
②Myofasciitis of the lumbar back muscle (fibromyositis);
(3) Third lumbar transverse synovial syndrome.
(3) Low back pain caused by stimulation of spinal cord and spinal nerve roots
(1) Spinal cord compression such as epidural abscess, intradural tumor, spinal arachnoiditis, etc;
②Acute myelitis;
(iii) subarachnoid space hemorrhage;
④Lumbosacral radiculitis.
The relationship between physical activity and low back pain
What is the relationship between physical activity and low back pain? Does physical activity increase low back pain, or does it prevent it? An article from the Netherlands is reported below, and the advice he gives is that too little and too much activity can both lead to low back pain.
Some studies have shown that high intensity activities can lead to low back pain, such as rotation, bending, weight lifting and extreme exercise of the lower back. There are also studies that show that too little activity can lead to low back pain. The question then arises: How much activity is needed to prevent low back pain? We can’t easily answer this question because there are so many factors to consider. For example, an individual’s occupation, participation in leisure activities, weight lifting and lifting activities are all potential contributors to low back pain.
In 1998, a U-shaped relationship between the intensity of physical activity and low back pain was reported, with the bottom of the U-shape being moderate physical activity and the intensity of physical activity away from moderate physical activity causing low back pain.
The authors aimed to test this theory. They sent questionnaires to 8,000 people about health, intensity of physical activity, epidemiology of low back pain, and number of doctor visits for the occurrence of low back pain. The basic information of the patients included age, gender, occupation, educational background, and perception of health.
Not all studies used the same criteria. There were three main groups based on intensity: low, moderate, and strong. Each category is based on the subject’s age and metabolic equivalent (MET)
Metabolic equivalents are a measure of the intensity of physical activity. For young subjects: low intensity is 2-4 MET, moderate intensity is 4-6.5 MET, and high intensity is >6.5 MET. For older subjects: low intensity is <3MET, moderate intensity is 3-5 MET, and high intensity is >5 MET.
According to the duration of exercise was divided into: moderate intensity as practicing at least five days a week and exercising half an hour a day; low intensity defined as less than moderate intensity; and high intensity as exercising several hours a day. The results showed that physical activity intensity did have a U-shaped relationship with chronic low back pain. Eleven percent of the subjects were low-intensity exercisers, and they were more likely to have low back pain than moderate-intensity exercisers. However, 30% of the subjects who exercised at high intensity also experienced low back pain. Women were closer to a U-shaped relationship compared to men, and the reason for this is unknown.
There was also a different relationship for the type of physical activity, with subjects who participated in physical activity having a lower incidence of low back pain.
Conclusion: The occurrence of low back pain is also different for different intensities of physical activity, and low intensity versus high intensity is a high risk factor for low back pain, just as the two sides of the U-shaped structure.
According to the time of exercise was divided into: moderate intensity as practicing at least five days a week and exercising half an hour a day.