What 3 things are being tested by completing the shuttle run? power, agility, flexibility muscle endurance, strength, flexibility leg strength, power, agility agility, muscle strength, power

Agility, muscle strength and power.

Explanation:

Shuttle run is a sport for athletes. Here, the participants places one foot behind the start line, and runs over and picks up a piece of wood. He/she then runs back and places the wood on the starting line. This sport is used to test the agility, speed , power and muscle strength of the participants.

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