Doing a lot of reps with lighter weights right after each other makes your legs feel way more tired right after than doing fewer reps with heavier weights.
Scientific Claim
A single high-volume resistance exercise session (8 sets of 10 repetitions) causes greater acute reductions in counter movement jump peak power and isokinetic/isometric leg extension strength at 30 minutes post-exercise compared to a high-intensity session (8 sets of 3 repetitions) in resistance-trained men, indicating more severe immediate neuromuscular fatigue.
Original Statement
“Significantly greater reductions in CMJP (p < 0.001), and peak torque during both ISOK (p = 0.003) and MVIC (p = 0.008) at P-30 min were detected in HV compared to HI protocol.”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
definitive
Can make definitive causal claims
Assessment Explanation
The RCT design with randomization and within-subject comparison allows causal inference. The verbs 'causes' and 'reductions' are appropriate given the statistical significance and controlled conditions.
Evidence from Studies
Supporting (1)
Comparison of the recovery response from high-intensity and high-volume resistance exercise in trained men
Doing many reps with lighter weights (high volume) made guys weaker right after exercise more than doing fewer reps with heavier weights (high intensity), showing that volume causes more immediate muscle fatigue.