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Clinical Trials/NCT05178732
NCT05178732
Completed
Not Applicable

The Effect of Menstrual Cycle Phase and Protein Dose on Muscle Protein Synthesis in Response to Exercise in Young Females

University of Exeter1 site in 1 country28 target enrollmentJanuary 16, 2022

Overview

Phase
Not Applicable
Intervention
Not specified
Conditions
Muscle Protein Synthesis
Sponsor
University of Exeter
Enrollment
28
Locations
1
Primary Endpoint
Muscle protein synthesis
Status
Completed
Last Updated
last year

Overview

Brief Summary

Adaptation to resistance exercise requires maximal rates of muscle protein synthesis, which can be achieved with post-exercise ingestion of ~20g of protein. These recommendations are based on studies in males and responses in females may vary.

Muscle recovery is related to the ability to build new muscle protein from amino acids (muscle protein synthesis). This response is thought to be impacted in females by hormones that fluctuate across different phases of the menstrual cycle. However, the effect of menstrual cycle phase on muscle protein synthesis is not known.

Registry
clinicaltrials.gov
Start Date
January 16, 2022
End Date
March 31, 2023
Last Updated
last year
Study Type
Interventional
Study Design
Parallel
Sex
Female

Investigators

Responsible Party
Sponsor

Eligibility Criteria

Inclusion Criteria

  • BMI between 18 and 30
  • Recreationally active
  • Regular menstrual cycle

Exclusion Criteria

  • Metabolic disease
  • Any motor disorder
  • Use of over-the-counter pharmaceuticals, during the study.
  • Pomegranate, milk or lidocaine allergy
  • Taken contraceptives in the past 3 months
  • Irregular menstrual cycle (less than 9 cycles per year and a length not between 21-35 days)
  • Post-menopausal women
  • Pregnancy and lactation

Outcomes

Primary Outcomes

Muscle protein synthesis

Time Frame: 7.5 hours

The rate of synthesis of new muscle protein

Secondary Outcomes

  • Plasma amino acid kinetics(7.5 hours)
  • Serum insulin concentrations(7.5 hours)
  • Blood flow(7.5 hours)
  • Gene expression(7.5 hours)
  • Blood glucose(7.5 hours)
  • Sex hormone concentrations(5 minutes)

Study Sites (1)

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