Dumbbells produced by Ningbo Zhuoqiu Trading Co., Ltd. are simple equipment for strengthening muscles. Its main material is cast iron, covered with a layer of rubber.
Its purpose is for muscle strength training, muscle compound movement training. Patients with low muscle strength due to exercise paralysis, pain, long-term inactivity, etc., hold dumbbells and use the weight of dumbbells to exercise resistance against resistance and train muscle strength.
Dumbbells can train a single muscle; if you increase weight, you need the coordination of multiple muscles. It can also be used as a kind of muscle compound exercise training.
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