Sports & Fitness: Performance Training, Rules & Recovery

Elite athletic performance and general fitness are sustained through structured hypertrophy strategies, sport-specific conditioning, and rigorous adherence to injury prevention protocols.

Shuttlecock on badminton racket

Role of a Badminton Umpire

Several kinds of rules officials oversee badminton matches and tournaments. The umpire typically oversees individual matches, and has authority over all other rules officials on his court. The Badminton World Federation's Laws of Badminton describe the roles of all rules officials.

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Man wearing scuba mask, underwater view, close-up

Diving & Ear Problems

Dramatic changes in pressure affect your ears and sinuses. You might have experienced ear popping as an airplane descends, for example. As you descend to begin a dive, the pressure increases dramatically with increased depth.

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Badminton racket and shuttlecock on artificial turf

List of Badminton Equipment

In badminton, players use rackets to hit a shuttlecock back and forth over a net. Badminton equipment must meet certain rules and specifications. The Badminton World Federation’s Laws of Badminton provide a standard for equipment in competitive badminton.

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Fitness Woman

Elliptical Forward vs. Reverse for Muscles

The elliptical machine offers a low-impact alternative to treadmills and stair climber machines. Working out on an elliptical trainer puts less stress on knee and hip joints than running or walking on a treadmill. The elliptical machine works a range of muscles in the legs.

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Baseball Overtime Rules

In sports, โ€œovertimeโ€ usually refers to the extension of a game or match to break a tie between two teams. When two baseball teams remain tied at the end of nine innings, the game continues into extra innings, a form of overtime.

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Members Of Female High School Volleyball Team

Volleyball Substitution Rules

In indoor volleyball, each team has six players on the court at all times. A team can substitute players on the bench for players on the court, but it must follow the substitution rules. Failure to follow substitution rules will result in penalties against your team, such as a lost time-out.

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