Within the framework of ways that strength is specific, there are eight ways in which strength can produce targeted effects, as follows: (1) contraction mode (eccentric or concentric), (2) velocity, (3) joint angle of peak contraction or range of motion, (4) the number of reps, or the point on the strength-endurance continuum, (5) the degree of stability, (6) external load type (weight or elastic resistance), (7) force vector, and (8) muscle group.
