Partial rep/pin/block involves?

• A. Isometric hold at peak contraction
• B. Resistance exercise through only portion of range of motions
• C. Full range of motion throughout the lift
• D. Continuous circuits with no rest

Answer: (B)

Partial range of motion training means working through only a portion of the joint’s available movement, rather than the full arc. In practice, you might set a pin or stop at a specific point and perform repetitions within that restricted range, or you might intentionally move only partway through a lift (for example, from the bottom to mid-range or from mid-range to the top). This approach targets a weaker portion of the lift—the sticking point—and increases time under tension where you’re strongest or weakest in that segment. It’s different from an isometric hold, which is simply pausing at a point without moving through ROM, and it’s different from full ROM work that trains through the entire movement. It’s also not about continuous circuits with no rest.