MS Wellness, Health and Fitness: Health

Muscular strength refers to the amount of force a muscle can produce with a single maximal effort.

Flexibility is the range of motion in a joint or group of joints or the ability to move joints effectively through a complete range of motion.

Muscular endurance is the ability of a muscle or group of muscles to sustain repeated contractions against a resistance for an extended period of time.

Endurance requires the circulatory and respiratory systems to supply energy to the working muscles in order to support sustained physical activity.