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The space hopper is a heavy rubber ball about 60–70 centimetres (24–28 in) in diameter, with two rubber handles protruding from the top. A valve at the top allows the ball to be inflated by a bicycle pump or car tire pump. A child can sit on top, holding the two handles, and bounce up and down until the ball leaves the ground.
An exercise class using exercise balls A wide range of exercises can be performed with an exercise ball. An exercise ball is a ball constructed of soft elastic , typically in 5 diameters of 10 cm increments, from 35 to 85 cm (14 to 33 in), and filled with air.
An average user should be able to start with a 45 mm (1.8 in) ball and move up to 60 mm (2.4 in) as their muscles get accustomed to the exercise. Larger Baoding balls between 70 mm and 100 mm (2.8 in to 3.9 in) can be used. Keeping larger balls separate while rotating them is an advanced skill.
In this position, the device is highly unstable and can be used for other forms of exercise. The name initially came from an acronym standing for “Both Sides Up" - a reference to the two ways a BOSU ball can be positioned. It is also referred to as the "blue half-ball", because it looks like a stability ball cut in half. The acronym now ...
A stress ball in the shape of a globe. A stress ball or hand exercise ball is a malleable toy, usually not more than 7 centimetres (2.8 in) in diameter. It is squeezed in the hand and manipulated by the fingers, ostensibly to relieve stress and muscle tension or to exercise the muscles of the hand. Despite the name, many stress balls are not ...
A rupture disc (burst) Pressure-effect acting at a rupture disc A rupture disc, also known as a pressure safety disc, burst disc, bursting disc, or burst diaphragm, is a non-reclosing pressure relief safety device that, in most uses, protects a pressure vessel, equipment or system from overpressurization or potentially damaging vacuum conditions.
It is distinct from the inflated exercise ball, which is much lighter and larger (up to 910 mm (36 in) diameter). Medicine balls are usually sold as 1–11 kg (2–25 lb) balls and are used effectively in ballistic training to increase explosive power in athletes in all sports, e.g. throwing the medicine ball or jumping whilst holding it. [3]
The following is a list of common exercises that are uniquely suited to the kettlebell. Some of these exercises may be performed with one or two kettlebells. [13] Turkish get-up Around-the-world/slingshot The kettlebell is held in one arm and moved in a circular motion around the body, switching hands in front and behind.