Fitness

Fitness

Related to the practice of regular exercise to maintain good physical condition and health.

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Fitness > Workouts

resting heart rate (RHR)

Fitness; Workouts

The lowest your heart will beat when you are totally at rest (averages 60-80). A true resting heart rate is taken first thing in the morning, before you get out of bed, have ...

target heart rate (THR)

Fitness; Workouts

see Target Heart Rate.

target zones heart rate

Fitness; Workouts

Your THR may encompass a large range, but for different performance goals, you may focus on narrower zones within your target spectrum.

internal obliques

Fitness; Workouts

Muscles that run upward and inward from the hip bones to the lower ribs, allowing you to rotate and bend at the waist. These are located underneath the external obliques. These ...

intervals

Fitness; Workouts

Speed workouts, usually run on a track, with distances and target paces decided before you run. They typically consist of relatively short sprints of 220 yards to 1 mile ...

isokinetic contraction

Fitness; Workouts

A dynamic method of muscle training where the speed of movement is held constant by a training device. No matter whether you exert a little force or all-out force, speed stays the ...

isometric contraction

Fitness; Workouts

A muscular contraction where the associated joints don't move, for example if you have to hold a heavy object in one place by contracting your biceps. This is a static action ...