Whether you do half-reps or full reps when doing lat pulldowns, your ability to do more reps with the same weight improves about the same amount after 8 weeks of training.
Scientific Claim
In resistance-trained individuals, 8 weeks of upper-body resistance training using lengthened partial repetitions and full range of motion produces similar improvements in strength-endurance for both partial and full range of motion lat pulldown performance, with moderate Bayesian evidence supporting no difference between the two methods.
Original Statement
“Similarly, both ROMs appeared to stimulate similar strength-endurance improvements in both partial and full ROM lat pulldown as assessed by 10 RM testing. ... Bayes factors (0.23 to 0.30) providing 'moderate' evidence support of H0.”
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 Bayesian analysis provides causal evidence for equivalence. The claim correctly uses 'similar improvements' and references the moderate Bayes factors, avoiding overstatement.
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.
Systematic Review & Meta-AnalysisLevel 1aWhether the equivalence in strength-endurance gains between LPs and full ROM extends across multiple upper-body exercises and populations.
Whether the equivalence in strength-endurance gains between LPs and full ROM extends across multiple upper-body exercises and populations.
What This Would Prove
Whether the equivalence in strength-endurance gains between LPs and full ROM extends across multiple upper-body exercises and populations.
Ideal Study Design
A meta-analysis of 8+ RCTs comparing LPs vs. full ROM in resistance-trained adults, measuring 10RM or time-to-failure in lat pulldown, bench press, and rowing exercises, with standardized ROM definitions and volume control.
Limitation: Cannot isolate the role of muscle length vs. joint angle in transfer effects.
Randomized Controlled TrialLevel 1bIn EvidenceWhether the strength-endurance transfer effect holds for exercises with different force curves (e.g., bench press vs. lat pulldown).
Whether the strength-endurance transfer effect holds for exercises with different force curves (e.g., bench press vs. lat pulldown).
What This Would Prove
Whether the strength-endurance transfer effect holds for exercises with different force curves (e.g., bench press vs. lat pulldown).
Ideal Study Design
A within-participant RCT with 40 trained individuals, assigning limbs to LPs or full ROM for 8 weeks across lat pulldown, bench press, and seated row, measuring 10RM in both partial and full ROM for each exercise, with ultrasound and EMG to assess muscle activation.
Limitation: Limited to upper-body; cannot assess lower-body transfer effects.
Longitudinal Cohort StudyLevel 2bWhether long-term use of LPs leads to better retention of strength-endurance in trained athletes over 1–3 years.
Whether long-term use of LPs leads to better retention of strength-endurance in trained athletes over 1–3 years.
What This Would Prove
Whether long-term use of LPs leads to better retention of strength-endurance in trained athletes over 1–3 years.
Ideal Study Design
A 3-year prospective cohort of 150 trained athletes tracking their preferred ROM (LPs vs. full) and measuring annual changes in 10RM strength-endurance across 4 upper-body exercises, controlling for training volume and nutrition.
Limitation: Subject to attrition and self-selection bias.
Evidence from Studies
Supporting (1)
The study found that doing partial reps with a stretch and full reps led to the same improvement in how many times people could pull down a weight — so neither method is better for endurance, and the data says they’re basically equal.