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Background <p>Osteoarthritis is a common joint disease, especially among individuals aged 50 and older, leading to symptoms such as pain, stiffness, and functional limitations, particularly in weight-bearing joints like the knees. Knee osteoarthritis (KOA) is increasingly prevalent, making effective treatment strategies critical. Exercise and dietary supplements are commonly used to manage symptoms, but the combination of these two approaches has not been widely studied. This study aims to evaluate the effects of combining exercise with dietary supplements on pain, physical function, and quality of life in individuals with KOA.</p> Methods <p>This trial will involve KOA patients, aged 55 and older. Participants will be assigned to one of three groups: (1) dietary supplement, (2) exercise with dietary supplement, (3) exercise with placebo dietary supplement. Randomization and double-blinding apply only to the dietary supplement in the exercise groups, while the supplement-only group serves as a non-randomized group. The exercise regimen will consist of resistance training, conducted under supervision. The dietary supplement will be a combination of glucosamine and collagen. The primary outcomes include pain levels and physical function, which will be assessed through questionnaires (WOMAC, SF-36), numeric rating scale, and various physical function tests (30&#xa0;s chair stand test, 40-m fast-paced walk, timed up and go test, star climbing test, 6-min walk test, static balance, and maximal isometric voluntary contraction of knee flexor and extensor). Data will be collected at baseline (week 0), after completion of the 12-week intervention (week 13), and at 6&#xa0;weeks post intervention (week 18).</p> Discussion <p>This study seeks to provide valuable insights into the combined effects of exercise and dietary supplements in managing KOA. It will fill the gap in current research by exploring whether the addition of a dietary supplement to an exercise regimen provides additional benefits. The findings could have important implications for clinical practices, offering a potential, non-invasive treatment strategy for improving pain management, physical function, and quality of life in individuals with KOA.</p> Trial registration <p>ClinicalTrials.gov, NCT06269549. Registered on 13th February 2024, <a href="https://inclinicaltrials.com/osteoarthritis-knee/NCT06269549/">https://inclinicaltrials.com/osteoarthritis-knee/NCT06269549/</a></p>

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Complementary effect of a combined exercise and dietary supplement intervention in individuals with knee osteoarthritis: study protocol for a randomized, double-blind, placebo-controlled trial

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月3日

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  • Tina Čeh,
  • Jernej Završnik,
  • Nejc Šarabon

摘要

Background

Osteoarthritis is a common joint disease, especially among individuals aged 50 and older, leading to symptoms such as pain, stiffness, and functional limitations, particularly in weight-bearing joints like the knees. Knee osteoarthritis (KOA) is increasingly prevalent, making effective treatment strategies critical. Exercise and dietary supplements are commonly used to manage symptoms, but the combination of these two approaches has not been widely studied. This study aims to evaluate the effects of combining exercise with dietary supplements on pain, physical function, and quality of life in individuals with KOA.

Methods

This trial will involve KOA patients, aged 55 and older. Participants will be assigned to one of three groups: (1) dietary supplement, (2) exercise with dietary supplement, (3) exercise with placebo dietary supplement. Randomization and double-blinding apply only to the dietary supplement in the exercise groups, while the supplement-only group serves as a non-randomized group. The exercise regimen will consist of resistance training, conducted under supervision. The dietary supplement will be a combination of glucosamine and collagen. The primary outcomes include pain levels and physical function, which will be assessed through questionnaires (WOMAC, SF-36), numeric rating scale, and various physical function tests (30 s chair stand test, 40-m fast-paced walk, timed up and go test, star climbing test, 6-min walk test, static balance, and maximal isometric voluntary contraction of knee flexor and extensor). Data will be collected at baseline (week 0), after completion of the 12-week intervention (week 13), and at 6 weeks post intervention (week 18).

Discussion

This study seeks to provide valuable insights into the combined effects of exercise and dietary supplements in managing KOA. It will fill the gap in current research by exploring whether the addition of a dietary supplement to an exercise regimen provides additional benefits. The findings could have important implications for clinical practices, offering a potential, non-invasive treatment strategy for improving pain management, physical function, and quality of life in individuals with KOA.

Trial registration

ClinicalTrials.gov, NCT06269549. Registered on 13th February 2024, https://inclinicaltrials.com/osteoarthritis-knee/NCT06269549/