1. The subject was lying on his back on the mat, with his legs slightly apart, his feet fixed on the instrument of the mat, his knees bent about 90 degrees, his fingers crossed behind his head, and a special electronic test belt tied around his waist.

Before sitting up, the tester will confirm the IC card of the testee with the instrument, and when the testee hears the prompt sound of "Didi Didi" from the instrument, he will start sitting up.

2. The instrument will automatically count 1 only if the posture of leaning up and sitting down is consistent and there is a prompt sound. Continuous one-on-one sitting movements are not in place, and there is no prompt sound, which does not count.

Extended data:

When doing sit-ups, you should cooperate with reasonable breathing. Therefore, in order to improve the quality of movement, we must also pay attention to the skills, that is, the process of lying on your back and inhaling, the shoulder and back contact pads and the upper body gradually lifting. When the upper body is lifted to the abdomen, it will exhale quickly and pull the head forward to complete the action.

Some modern studies show that sit-ups are only effective for abdominal muscles within 30 degrees when the body starts to lift, so the effective action is to lift only the shoulders, not the lower back; If it continues, it will change from abdominal muscle contraction to gluteal muscle contraction.

Strength training such as sit-ups and push-ups can't be partial weight loss. If you want to have strong rectus abdominis, you need abdominal training to remove abdominal fat, which requires reducing body fat.

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