Which is the fifth basic training principle?

• A. Contraction control principle
• B. Stress - Rest principle
• C. Overload principle
• D. Symmetry principle

Answer: (A)

This item tests the idea that training should emphasize contraction control—the ability to perform each repetition with deliberate, smooth muscle contraction rather than relying on momentum or jerky movements. When you control the contraction, you keep the muscle under tension through the full range, maintain proper form, and regulate tempo. This leads to better neuromuscular coordination and reduces the risk of injury, making the workout more effective overall. In practice, you’d perform reps with a steady tempo, slow your eccentric phase, and avoid swinging or using momentum to lift the weight.

The other principles describe different ideas important to training: stress and rest balance recovery cycles, the overload principle drives adaptation by increasing demands, and symmetry focuses on balancing work across opposing muscle groups. While these matter, the idea here centers on how you actively control muscle contractions during movement.