TUT (Time Under Tension)
Definition
The total time a muscle is under load during a set, influenced by rep tempo and number of reps.
Why It Matters
TUT affects metabolic stress and mechanical tension—two key drivers of hypertrophy. Manipulating tempo can increase muscle stimulus without adding external load.
How to Apply
For hypertrophy, aim for 40-70 seconds of TUT per set (e.g., 10 reps with 4-second tempo). Use controlled eccentric phases (2-4 seconds) and brief pauses at peak contraction. Track tempo as eccentric-pause-concentric (e.g., 3-1-1).
Common Mistakes & Fixes
- ⚠Using excessively slow tempos that sacrifice load or muscle tension
- ⚠Focusing only on TUT while ignoring progressive overload
- ⚠Counting time instead of feeling muscle engagement
- ⚠Applying slow tempos to all exercises (power/speed work requires fast tempos)
Related Terms
Educational Resource: This information is for educational purposes only and should not be considered medical or professional training advice. Always consult with qualified fitness professionals and healthcare providers before starting any new training program or making significant changes to your routine.
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