A Study of the Effect of Time-of-day of Training on Chronic Patellar Tendinopathy

NCT ID: NCT06217432

Last Updated: 2024-01-22

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

70 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-01-10

Study Completion Date

2025-12-31

Brief Summary

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The study is a 12-week human study where 60 participants with chronic patellar tendinopathy (more than 3 months symptoms duration) are randomised to undergo 12 weeks of targeted resistance exercise either in the morning or in the late afternoon. The overall aim is to investigate when the best time of the day to perform muscular strength training therapy towards tendinopathy is. The study will also include 10 healthy controls who will not perform any exercise training.

Detailed Description

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Conditions

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Tendinopathy Jumper's Knee

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

DOUBLE

Investigators Outcome Assessors

Study Groups

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Morning exercise

Three sessions per week of targeted resistance exercise targeting the quadriceps muscles performed between 6:00 and 8:00 for 12 weeks.

Group Type EXPERIMENTAL

Resistance training for knee extensors

Intervention Type OTHER

The exercise will be started at 60% of 1 repetition maximum (RM) and progressed to 75% of 1 RM during the first 3 weeks and maintained throughout the intervention period. The exercise will be performed slowly (6 s/ repetition).

Late afternoon exercise

Three sessions per week of targeted resistance exercise targeting the quadriceps muscles performed between 16:00 and 18:00 for 12 weeks.

Group Type EXPERIMENTAL

Resistance training for knee extensors

Intervention Type OTHER

The exercise will be started at 60% of 1 repetition maximum (RM) and progressed to 75% of 1 RM during the first 3 weeks and maintained throughout the intervention period. The exercise will be performed slowly (6 s/ repetition).

Healthy control

Healthy individuals without tendinopathy as controls for the transcriptomics and proteomics analyses.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Resistance training for knee extensors

The exercise will be started at 60% of 1 repetition maximum (RM) and progressed to 75% of 1 RM during the first 3 weeks and maintained throughout the intervention period. The exercise will be performed slowly (6 s/ repetition).

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Sports active men and women
* Age (18-55) years old
* BMI (18.5-30)
* Uni- or bilateral patellar tendinopathy
* Symptom onset \>90 days ago

Exclusion Criteria

* Patellar tendinopathy longer than 24 months
* Previous surgery in the knee on the ipsilateral side
* Corticosteroid injection in the patellar tendon on the ipsilateral side within the last 6 months
* Any confounding diagnosis to the knee joint
* Known arthritis
* Known diabetes
* Known rheumatic disorders
* Inability to follow rehabilitation or complete follow-ups
* Enrolled in a resistance based-rehabilitation program for the affected patellar tendon within the previous 3 months
* Have an occupation where it is not feasible to avoid pain provoking tasks
* Pregnancy
* Have sleeping disorders or disruptions, e.g., night shift work
* Use of medicines or supplements known to affect collagen synthesis or sleep
Minimum Eligible Age

18 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Bispebjerg Hospital

OTHER

Sponsor Role lead

Responsible Party

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Chloé Yeung

Senior Researcher

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Institute of Sports Medicine Copenhagen

Copenhagen NV, Capital Region, Denmark

Site Status RECRUITING

Countries

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Denmark

Central Contacts

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Chloé Yeung, PhD

Role: CONTACT

004561461988

Facility Contacts

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Chloé Yeung, PhD

Role: primary

004561461988

Michael Kjær, PhD

Role: backup

Other Identifiers

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TENDOTIME

Identifier Type: -

Identifier Source: org_study_id

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