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Nitrate Supplementation on Motor Unit Activity

NCT05993715 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 14

Last updated 2023-08-15

No results posted yet for this study

Summary

This study aimed to assess if nitrate supplementation influence motor unit (MU) activity following a sustained ischemic contraction and whether this is affected by blood flow restriction (BFR) during the recovery period. Fourteen male participants (mean ± SD, 25 ± 6 years) completed two experimental trials following 5-days of supplementation with either nitrate-rich (NIT) or nitrate-depleted (PLA) beetroot juice in a randomized, double-blinded, cross-over design. Intramuscular electromyography was used to assess MU potential (MUP) size and firing rates (MUFR) during a submaximal (25% MVC) sustained isometric contraction with BFR. These variables were also assessed during a 90 s recovery period with the first half completed with, and the second half completed without, BFR. Nitrate supplementation can expedite the recovery of MUP duration following a sustained ischemic contraction in healthy adults. These novel observations improve understanding of the effects of nitrate on the recovery of neuromuscular function post-exercise and might have implications for recovery of muscle contractile function.

Conditions

  • Dietary Supplements
  • Healthy

Interventions

DIETARY_SUPPLEMENT

Nitrate supplementation

Participants ingested 2 × 70 mL/day shots of concentrate nitrate-rich (\~12.8 mmol/day nitrate) or nitrate-depleted (\~0.08 mmol/day nitrite) beetroot juice (Beet It, James White Drinks Ltd., Ipswich, UK). Two shots were supplemented for 5 days; one each morning (\~9 am) and one each evening (\~9 pm) except for the day of the experimental trial when both shots were taken together 2.5 h before the experimental trial.

DIETARY_SUPPLEMENT

Placebo supplementtaion

2 × 70 mL/day shots of concentrate nitrate-depleted (\~0.08 mmol/day NO3-) beetroot juice. Two shots were supplemented for 5 days; one each morning (\~9 am) and one each evening (\~9 pm) except for the day of the experimental trial when both shots were taken together 2.5 h before the experimental trial.

Sponsors & Collaborators

  • Manchester Metropolitan University

    collaborator OTHER

  • Northumbria University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
DOUBLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
30 Years
Sex
MALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2019-12-04
Primary Completion
2020-02-03
Completion
2020-03-01

Countries

  • United Kingdom

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05993715 on ClinicalTrials.gov