Dumbbell is a simple equipment used to strengthen muscle strength training. Its main material is cast iron, and some are covered with a layer of rubber such as (vinyl coated dumbbells).
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 a dumbbell, and use the weight of the dumbbell 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, and it can also be used as a muscle compound exercise training.
An auxiliary equipment for weightlifting and fitness exercises. There are two kinds of fixed weight and adjustable weight. ① Fixed weight dumbbells. It is made of pig iron, with an iron rod in the middle and solid balls at both ends for practice. ②Adjustable dumbbells. Similar to a reduced barbell, round iron plates of varying weights are placed on both ends of the short iron bars, about 40 to 45 cm in length, which can increase or decrease the weight when lifting weights or fitness exercises. Regular dumbbell exercises can increase muscle strength in various parts of the body.
In addition to iron dumbbells, there are also wooden or plastic dumbbells. When practicing, use the percussion sound of wooden dumbbells or plastic dumbbells to cultivate the practitioner's coordination and sense of rhythm. You can also weave wooden dumbbells into a complete set of gymnastics.
Using dumbbells scientifically can indeed receive a good exercise effect. Some sources say that Schwarzenegger's bodybuilding muscles were mainly obtained through dumbbell exercises. However, many people do not increase their strength or become fit after exercising with dumbbells. They often get discouraged. Dumbbells are also shelved or even become substitutes for hammers. In fact, dumbbell fitness has a lot of knowledge. If it is not implemented, the exercise effect will often be disappointed.
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