Time Under Tension
Time under tension (TUT) is the total duration a muscle is under load during a set, measured in seconds. HYROX stations impose significant TUT — 75 wall ball reps produce 150-225 seconds of continuous loading — making TUT-focused training essential for race-day endurance.
Meaning
Time under tension is the elapsed time a muscle produces force during a repetition or set. It depends on repetitions, movement tempo, pauses and range. It describes exposure, not a guaranteed adaptation.
Repetition-tempo meta-analysis · ACSM resistance-training position stand 2026
Programming
Controlled tempo can standardize technique, but a recent meta-analysis found little overall hypertrophy difference between broadly faster and slower conditions. Select load, repetitions, range and tempo together; no universal seconds-per-set target applies.
Repetition-tempo meta-analysis · ACSM resistance-training position stand 2026
FAQ
Is there one correct dose?
No. Select it from the goal, experience and response.
Repetition-tempo meta-analysis · ACSM resistance-training position stand 2026
Is it required for HYROX®?
No. It is an optional method, not a competition requirement.
Repetition-tempo meta-analysis · ACSM resistance-training position stand 2026
What if it hurts?
Stop for sharp, persistent or worsening pain and seek qualified assessment.
Repetition-tempo meta-analysis · ACSM resistance-training position stand 2026
Find exercises with HYROX®-relevant tempo prescriptions at Repz.
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