Description: When you use the resistance chute to exercise the resistance of the air will produce an backward drag force so the faster you run the greater the drag force. Through this exercise can improve the ability of the user s acceleration muscle... more
Description: When you use the resistance chute to exercise the resistance of the air will produce an backward drag force so the faster you run the greater the drag force. Through this exercise can improve the ability of the user s acceleration muscle... more
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