Table 1.

Definition of Terms

Strength trainingThe use of resistance methods to increase one's ability to exert or resist force. The training may utilize free weights, the individual's own body weight, machines, and/or other resistance devices to attain this goal.
SetA group of repetitions separated by scheduled rest periods (eg, 3 sets of 20 reps).
RepsAbbreviation for repetitions.
One rep max (1RM)The maximum amount of weight that can be displaced in a single repetition.
Concentric contractionThe muscle shortens during contraction (eg, arm curl, leg press).
Eccentric contractionThe muscle lengthens during contraction (eg, lowering a weight).
Isometric contractionThe muscle length is unchanged during contraction (eg, wall sits).
Isokinetic contractionThe speed of muscle contraction is fixed through the range of motion.
Progressive resistive exercisesAn exercise regimen in which the athlete progressively increases the amount of weight lifted and/or the number of repetitions. The more repetitions, the greater the work performed and the greater the endurance development. The more weight lifted, the greater the strength development.
Weight liftingA competitive sport that involves maximum lifting ability. Olympic weight lifting includes the “snatch” and the “clean and jerk.”
Power liftingA competitive sport that also involves maximum lifting ability. Power lifting includes the “dead lift,” the “squat,” and the “bench press.”
Body buildingA competition in which muscle size, symmetry, and definition are judged.