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Specific collagen peptides increase adaptions of patellar tendon morphology following 14-weeks of high-load resistance training: A randomized-controlled trial

Simon Jerger, Christoph Centner, Benedikt Lauber, Olivier Seynnes, Till Friedrich, David Lolli, Albert Gollhofer, Daniel König
European Journal of Sport Science 2023 23(12):2329–2339

Bibliography

PubMed
PMID 37424319
DOI
10.1080/17461391.2023.2232758
Funding
No funding statement was located in the accessible full-text/publisher record reviewed on 2026-09-23. The test product was TENDOFORTE® (GELITA AG), but product identity alone is not evidence of study funding.
Competing interests
The authors reported no potential conflict of interest.

Study snapshot

DesignRandomized placebo-controlled 14-week high-load knee-extensor training study
ModelMen training at 70–85% 1RM three days a week
Sample50 healthy moderately active men
Intervention5 g/day specific collagen peptides vs matched placebo plus standardized training
Duration14 weeks
EndpointsPatellar tendon cross-sectional area; Tendon stiffness; Quadriceps strength; Muscle cross-sectional area

What the study showed, in plain terms

Five grams of a specific collagen peptide preparation enhanced selected patellar-tendon CSA responses to exercise; tendon stiffness and strength improved with training but did not differ between collagen and placebo.

Key findings

Additional CSA increases at 60% and 70% tendon length; no additional stiffness or strength effect.

What this study can and cannot tell us

Selected branded peptide product, men only and exercise co-intervention; do not generalize low-dose effect to every collagen formulation.

Editorial review

Reviewed by the Biohack Blueprint research team

Last verified

Dr. Khaled Mahmoud, MBBChCritical Care Medicine, Longevity Science & Editorial Direction Dr. Amr Yasser, PhDCardiometabolic, Musculoskeletal, Gut & Bioavailability Dr. Abdulla Mostafa, PhDCellular Senescence, Neurological, Mitochondrial & Brain-Ageing Biology