The Effect of Exercise and Presleep Nutrition on Muscle Connective Tissue Remodelling

NCT ID: NCT06054620

Last Updated: 2023-11-13

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

12 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-09-15

Study Completion Date

2025-08-01

Brief Summary

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The primary objective of this study will be to determine the influence of a presleep vitamin C-enriched, collagen-modelled supplement (CVC) on the metabolic fate of dietary glycine using a \[2H5\]glycine tracer within the intramuscular connective tissue at rest and after a bout of resistance exercise. Other outcomes will be related to regulation collagen remodelling in skeletal muscle.

Detailed Description

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Conditions

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Interventional

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Crossover to receive Collagen and Vitamin C (CVC) or Carbohydrate placebo. Unilateral leg exercise (EX) to give 4 outcomes. (1) CVC-EX; (2) CVC-REST; (3) PLACEBO-EX; (4) PLACEBO-REST
Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Double blinded (investigators and participants). A lab member external to the investigation will code items for the intervention.

Study Groups

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Collagen and Vitamin C

Group Type ACTIVE_COMPARATOR

Collagen and Vitamin C

Intervention Type DIETARY_SUPPLEMENT

Collagen-modelled crystalline amino acids (30g total, 8g glycine) and vitamin C (500 mg).

Carbohydrate Placebo

Group Type PLACEBO_COMPARATOR

Carbohydrate Placebo

Intervention Type DIETARY_SUPPLEMENT

Iso-caloric Placebo (30g maltodextrin).

Interventions

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Collagen and Vitamin C

Collagen-modelled crystalline amino acids (30g total, 8g glycine) and vitamin C (500 mg).

Intervention Type DIETARY_SUPPLEMENT

Carbohydrate Placebo

Iso-caloric Placebo (30g maltodextrin).

Intervention Type DIETARY_SUPPLEMENT

Other Intervention Names

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CVC

Eligibility Criteria

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Inclusion Criteria

* Healthy, recreationally active, male and female participants.
* Healthy will be defined as someone who does not have a health condition that would compromise their ability to safely participate in the strenuous physical activity involved in our study as screened for by the Get Active Questionnaire.
* Willing to abstain from resistance exercise for 2 weeks prior to the first metabolic trial and for the duration of the study.
* Participants must be able to abstain from lower-body resistance and/or plyometric exercise for at least 2 weeks prior to the first metabolic trial.
* Participants will be aged 18-35 years old.
* Participants must be normal to overweight (e.g., BMI 18.5-30).
* Participants are willing to abide by the compliance rules of this study (e.g., abstain from physical activity and alcohol 48h prior to each trial).
* Self-reported regular menstrual cycle (25-35d) within the last 3 months (female participants).

Exclusion Criteria

* Inability to adhere to any of the compliance rules judged by principal investigator or medical doctor.
* Self-reported regular tobacco use.
* Self-reported illicit drug use (e.g. growth hormone, testosterone, etc.).
* Regular use of anti-inflammatory drugs (e.g., ibuprofen).
* Self-reported regularly sleeping less than an average of 7 hours over 3 days (minimum recommended daily amount).
* Individuals who have participated in studies within the past year involving any of the stable isotopes in the study.
* Use of birth control and discontinued use in the last 3-months (female only).
Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Toronto

OTHER

Sponsor Role lead

Responsible Party

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Daniel Moore

Associate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Goldring Centre for High Performance Sport at the University of Toronto

Toronto, Ontario, Canada

Site Status RECRUITING

Countries

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Canada

Central Contacts

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Daniel R Moore, PhD

Role: CONTACT

416-946-4088

Paul L Babits, BKin

Role: CONTACT

647-609-4710

Facility Contacts

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Dan R Moore, PhD

Role: primary

647-946-4088

Paul L Babits, BKin

Role: backup

Other Identifiers

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CVC

Identifier Type: -

Identifier Source: org_study_id

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