What are the benefits of marine collagen? The complete guide for seasoned athletes
Discover how marine collagen optimizes your recovery, protects your joints and improves your long-term athletic performance.

Table of Contents
Key points to remember:
- Marine collagen is a highly bioavailable protein extracted from fish.
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Its low molecular weight hydrolyzed form guarantees optimal absorption.
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Key benefits: muscle recovery, joint health and connective tissue strength.
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The combination with vitamin C is essential to maximize collagen synthesis.
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Recommended dosage: 9g of powder per day (1 measuring spoon) which represents 8g of marine collagen peptides for optimal results.
Looking to optimize your recovery, protect your joints, and maintain your performance over time? Marine collagen could be the nutritional ally you're missing. This structural protein, often overlooked in athletes' supplementation strategies, plays a fundamental role in the health of your connective tissues. Discover why and how to incorporate this powerful active ingredient into your training routine.
What is marine collagen and how does it work in the athlete's body?
Marine collagen is a structural protein extracted primarily from the scales and skin of fish [1]. It is mostly type I collagen, the most abundant form in the human body. What sets marine collagen apart from other sources (bovine or porcine) is its remarkable similarity to human collagen [2], making it easier for your body to assimilate.
This protein is characterized by its unique triple helix structure, composed of three intertwined amino acid chains. Particularly rich in glycine, proline and hydroxyproline, marine collagen provides the essential elements your body needs to maintain the integrity of your connective tissues. [2]
To be effectively absorbed, natural collagen must undergo a hydrolysis process that breaks its molecular structure into smaller peptides. [3] Quality hydrolyzed marine collagen has a low molecular weight (ideally 2000 daltons), which gives it superior bioavailability, up to 1.5 times higher than that of bovine collagen. [4] This characteristic significantly improves its assimilation by the body and promotes its distribution to connective tissues, such as those in your skin, joints or tendons, where its effects are most expected.
What are the main benefits of marine collagen for athletic performance?
Marine collagen offers numerous benefits that specifically address the needs of athletes. Thanks to its unique composition of essential amino acids, this structural protein works on multiple levels to support your body during the demands of intensive training.
Protection and regeneration of joint tissues
When you regularly subject your joints to significant mechanical stress, cartilage preservation becomes essential. Marine collagen acts directly on joint health by stimulating chondrocytes, the cells responsible for cartilage production. [5]
Clinical studies show that daily supplementation with 8g of collagen peptides can reduce joint pain associated with intense exercise after 24 weeks. [6] This improvement is particularly notable in athletes involved in high-impact activities such as running, team sports, or CrossFit.
Acceleration of muscle recovery after exercise
Marine collagen's richness in specific amino acids makes it a valuable ally for your recovery. After an intense workout, your muscles suffer micro-lesions that require effective repair.
A 2019 study showed that athletes supplemented with hydrolyzed collagen experienced a significant reduction in muscle soreness. post-exercise and accelerated recovery compared to the placebo group. [7] This effect is particularly beneficial if you chain training sessions together.
Strengthening tendons and ligaments
Tendons and ligaments, often overlooked in nutritional strategies, are nevertheless essential to your performance. Composed of 70-80% collagen [8], these tissues benefit directly from targeted supplementation.
Marine collagen improves the elasticity and strength of connective tissues, thus reducing the risk of tendon injuries. A study conducted on athletes suffering from chronic ankle instability showed that supplementation of 5 g/day for 6 months significantly reduced injury recurrence. [9]
How does marine collagen contribute to your overall well-being?
Improved skin quality and hydration
This anti-aging action is not only aesthetic: supple and well-hydrated skin is more resistant to external aggressions and retains its vitality more easily.
Long-term bone health support
How to effectively integrate marine collagen into your sports routine?
To maximize the benefits of marine collagen, a structured approach is necessary. The quality of the supplement, its dosage and the timing of its intake are all factors that will directly influence its effectiveness.
To optimize the absorption and effectiveness of marine collagen, ideally take it with a meal (morning, noon or evening). Combination with vitamin C is particularly recommended, as it acts as an essential cofactor in collagen synthesis. [12]
When making your selection, choose a product that offers:
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Low molecular weight (approximately 2000 daltons) for optimal absorption.
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A high concentration of collagen peptides (minimum 8 g per serving).
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Quality certifications guaranteeing purity and the absence of contaminants.
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The addition of vitamin C to boost natural collagen synthesis.
The powder form offers greater flexibility of use and makes it easier to achieve the correct daily dosage, without having to swallow a large number of capsules (for example, it would take approximately 8 capsules to obtain only 3 g of collagen).
Impulse Nutrition Marine Collagen perfectly meets these requirements with its 2000 dalton collagen peptides enriched with vitamin C. This food supplement in powder form can be diluted in water or added to your usual preparations (dose of 9 g/day which represents 8 g of marine collagen peptides).
Are there any precautions to take with marine collagen supplementation?
The ideal carbohydrate mix combines different carbohydrate sources to maximize intestinal absorption and provide consistent energy. The combination of maltodextrin, glucose, and fructose allows for different metabolic pathways to be used simultaneously, increasing the amount of carbohydrate your body can absorb per hour of exercise—up to 90g compared to 60g with a single source [5]. This multi-carb approach significantly delays exhaustion and optimizes your endurance.
SOURCES
[1] Fish Collagen: Extraction, Characterization, and Applications for Biomaterials Engineering. Polymers. https://www.mdpi.com/2073-4360/12/10/2230
[2] A review on marine collagen: sources, extraction methods, colloid properties, and food applications. Collagen and Leather https://jlse.springeropen.com/articles/10.1186/s42825-024-00152-y
[3] Hydrolyzed collagen: Exploring its applications in the food and beverage industries and assessing its impact on human health – A comprehensive review. Heliyon . https://www.cell.com/heliyon/fulltext/S2405-8440%2824%2912464-4
[4] Development of fish collagen in tissue regeneration. Biomedical Materials . https://www.sciencedirect.com/science/article/pii/S2666138122000317
[5] Marine Collagen Hydrolysates Promote Collagen Synthesis, Viability and Proliferation While Downregulating the Synthesis of Pro-Catabolic Markers in Human Articular Chondrocytes. International Journal of Molecular Sciences. https://www.mdpi.com/1422-0067/22/7/3693
[6] WHY COLLAGEN PEPTIDES ARE IMPORTANT FOR YOUR MOBILITY - PEPTAN®, COLARTIX®. Peptan . https://peptan.com/fr/pourquoi-les-peptides-de-collagene-sont-important-pour-votre-mobilite-peptan-colartix-etc-2/
[7] The effects of collagen peptides on muscle damage, inflammation and bone turnover following exercise: a randomized, controlled trial. Amino Acids . https://pubmed.ncbi.nlm.nih.gov/30783776/
[8] Tendon Cell Biology: Effect of Mechanical Loading. Cellular Physiology and Biochemistry. https://cellphysiolbiochem.com/Articles/000743/index.html
[9] Improvement of Functional Ankle Properties Following Supplementation with Specific Collagen Peptides in Athletes with Chronic Ankle Instability. Journal of Sports Science & Medicine https://pubmed.ncbi.nlm.nih.gov/29769831/
[10] The effect of oral collagen peptide supplementation on skin moisture and the dermal collagen network: evidence from an ex vivo model and randomized, placebo-controlled clinical trials. Journal of Cosmetic Dermatology. https://pubmed.ncbi.nlm.nih.gov/26362110/
[11] Marine Collagen-Based Biomaterials for Bone Regeneration. Materials Today Bio . https://www.sciencedirect.com/science/article/pii/S2666542524000626
[12] Vitamin C-enriched gelatin supplementation before intermittent activity increases collagen synthesis. American Journal of Clinical Nutrition . https://www.sciencedirect.com/science/article/pii/S0002916522047372