| 摘要 |
An exerciser includes a bellows and a pair of gripping units attached to the bellows. The bellows includes an elongated wall body which is made from a compressible and expandable resilient material and which defines a sealed interior chamber therein. The wall body has a first end portion, a second end portion and a plurality of pleated sections located between and formed integrally with the end portions thereof. The first end portion has a radially extending circular orifice which is formed through a wall thereof and which has a predetermined diameter for communicating an exterior of the wall body with the interior chamber thereof so as to permit air to enter into and exit from the interior chamber only via the orifice. The gripping units are respectively attached to the first and second end portions of the wall body such that the wall body can be compressed or stretched by applying a force on the first and second end portions so as to vary the volume of the chamber in the wall body, thereby enabling the user to achieve an alternate pull and push exercising effects on a user.
|
