Which recommendation pertains to tempo to avoid extended isometric and concentric actions?

• A. Increase tempo for all repetitions
• B. Slow tempo to deepen contractions
• C. Modify tempo to avoid extended isometric and concentric actions
• D. Maintain fixed tempo regardless of effort

Answer: (C)

Tempo is how fast each phase of a movement happens—the lowering (eccentric), any pause (isometric), and the lifting (concentric). When you want to prevent extended isometric and concentric actions, you adjust tempo so a rep doesn’t linger in a paused or slow-lift phase. This keeps the time under tension at a manageable level, helps maintain proper form, and reduces the risk of fatigue that can come from long holds or very slow contractions. It also gives you flexibility to match effort and fitness level in a group setting, making the workout safer and more sustainable. Increasing speed across all reps or slowing down to deepen contractions can unintentionally lengthen those contractions or compromise control, and sticking to a fixed tempo without regard to effort doesn’t address fatigue or technique as effort changes. Adjusting tempo as needed to avoid lingering isometric and concentric phases is the best way to manage these considerations.