| 摘要 |
A chest exerciser has a pneumatic resister (1) of linear motion and a selection of handle (8, 9), attachment (29) and/or anchor means (34, 40, 42) that are positional on opposite ends for direction of selectively push exercise and pull exercise to select muscle groups and to specific muscles in the select muscle groups. The pneumatic resister of linear motion can be a cylindrical pump (6, 7), an accordion bellows pump (4), a variously telescopic bellows pump (5), a resilient pump or other pneumatic pump or combinations of pneumatic pumps. The pneumatic resister of linear motion can be selectively resistant to linear motion by means of flow resisters (2, 3) that can be adjustable of resistance or rate of inflow and outflow of air. Separate inflow and outflow resisters (2, 3) can be provided for adjustment of push and pull exercise. Handle means can be different for different sizes of hands and for different positioning of the pneumatic resister in relation to muscles. Attachment and anchor means can be provided for positioning the pneumatic resister in desired relationship to select muscle groups and to specific muscles in muscle groups of a body.
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