How can I properly use public fitness equipment?

1, treadmill: exercise the muscles of the lower limbs, hip, knee and waist muscle group strength and mobility, while helping to enhance cardiorespiratory function. Note: hands should hold the bar to prevent falls; legs should not swing too much to avoid muscle strains. 2, combination bar: strengthen the upper limbs and back muscles, can pull the wrist, upper limb muscles, etc., to enhance the flexibility and flexibility of the joints. Note: Hold the bar tightly with both hands to prevent injuries from falling. 3.Balance roller: can enhance the cardiorespiratory function and joint flexibility, improve the body’s balance and coordination ability. Note: hold the bar tightly; to balance the roller at rest,? Only on and off the equipment, the movement should be slow at the beginning, and then gradually speed up. Elderly people suffering from cardiovascular disease, vertebral artery cervical spondylosis, otoliths, easy to seasickness or seasickness can not use the equipment. It is basically not recommended for the elderly to use the equipment exercise, can not master the balance of coordination is easy to fall. For frail and sickly, osteoporosis of the elderly, a fall, it is likely to be difficult to get up again. Also named “wave bridge” fitness facilities are not suitable for the elderly, stepping on the bridge board with active rope bolted, swaying too much, can not master the balance, the elderly are also prone to fall. 4, rotating waist machine: activity waist joints, relax the back muscles, suitable for people of all ages except children. Especially suitable for lumbar activity disorders, lumbar muscle strain and fatigue around the body and other diseases. Note: The waist should be controlled when twisting, and the amplitude should not be too large. Remember that the hand always do not leave the handle, to keep the twist waist angle of 45 degrees or less, the twist speed should be slow and even, in order to achieve fitness and not hurt the body. 5, waist and back massager: massage waist and back muscles, dredge the meridians, adjust the function of the internal organs, improve the body’s ability to resist disease. The human body close to the massager, up and down slowly around the movement. The equipment is more suitable for the elderly. Note: moderate force, the action should be slow to fast. 6, see-saw: exercise the whole body integrated functions and balance consciousness. Note: both hands should hold the handrail, the oscillation frequency should not be too fast and too large, otherwise easy to cause osteoporosis vertebral compression fracture or tailbone fracture. 7, a single person health rider: exercise hand and foot coordination, enhance the cardiorespiratory function and the flexibility of the whole body joints, the limbs and low back pain and other rehabilitation effects. Note: sit on the seat with both hands holding the handle, both feet firmly on the pedals, feet down pedal, while the hands pull back. Operation should be chest up, feet steadily, the time should not be too long, within 20 minutes. 8, rowing machine: exercise chest, abdomen, waist, back, upper limb muscle group strength, but also has a simulation of rowing fun. Note: sitting on the rower, pedals, hands before grabbing the handle to pull back, repeat the simulation of rowing action. Up and down the equipment to master the balance, so as not to fall and muscle strains.