| 摘要 |
A method for exercising the lower body of a person comprising an elongated spring bar which may or may not be provided with weights at the ends. A protective collar is provided centrally of the bar to permit the user to support the bar on the shoulders or on the back. The user springs up and down between an erected and squat position and the bar oscillates in a manner such that as the user is moving downwardly towards the squat position the bar forms a tension arc with the ends pointing upwardly and after the user has reached the lower most position and is beginning his upward movement, the arc will form a tension arc with the ends pointing downwardly, and as the user reaches his erect position the bar will enhance a further upward movement as the tension is released.
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