The Effects of β-Hydroxy-β-methylbutyrate Free Acid and High-Intensity Interval Training

NCT ID: NCT01941368

Last Updated: 2014-03-17

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

COMPLETED

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-09-30

Study Completion Date

2013-12-31

Brief Summary

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Objectives: 1) Determine the effect of 4-weeks of high intensity interval training (HIIT) and free acid form β-Hydroxy-β-methylbutyrate (HMB-FA) on VO2peak, lactate threshold, critical power, anaerobic working capacity and neuromuscular economy in a population of endurance trained individuals. 2) Determine the effect of 4-weeks of HIIT and HMB-FA on changes in skeletal muscle physiological cross-sectional area (PCSA=Volume/Fascicle length) and muscle quality (MQ=echo intensity) in the rectus femoris and vastus lateralis.

Subjects: Fifty males and females between the ages of 18 - 35 will be recruited to participate in this study. Subject will be randomized to one of three groups: a control group (CTL), an HIIT only group (HIIT) or a group which will take the amino acid metabolite HMB and perform HIIT (HMB-HIIT). Individuals assigned to CTL will undergo baseline testing. They will then be asked to continue their normal exercise routine for 4 weeks and will undergo post-testing after this time period.

Study Protocol: Two testing sessions, on nonconsecutive days, will occur at least 72 hours prior to the start of the training period. The same testing protocols will be repeated at the end of the 4-week training period. Testing protocols include performance testing (VO2peak, lactate threshold, critical power, anaerobic working capacity and neuromuscular economy) and anthropometric measures (physiological cross-sectional area and muscle quality). The training protocol for individuals in the experimental groups will consist of 4-weeks of high intensity interval training with three sessions per week on an electronically braked cycle ergometer. Individual work -loads will be calculated based on the outcomes from each participant's preliminary testing.

Detailed Description

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Conditions

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Exercise

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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Control

Individuals assigned to Control Group will undergo baseline testing and then be asked to continue their normal exercise routine for 4 weeks and will undergo post-testing (visits 16 and 17) after this time period.

Group Type NO_INTERVENTION

No interventions assigned to this group

Placebo + High-Intesnity Interval Training (HIIT)

On training days, individuals will consume 1 gram of placebo 30 min prior to training, 1gram placebo 1 hour post training, and 1gram placebo 3 hours post training. On non-training days, individuals will consume placebo 3 times per day (8am, 12pm and 4pm).

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DIETARY_SUPPLEMENT

High Intensity Interval Training

Intervention Type PROCEDURE

HMB-FA + HIIT

On training days, individuals will consume 1 gram HMB-FA 30 min prior to training, 1gram HMB-FA 1 hour post training, and 1gram HMB-FA 3 hours post training. On non-training days, individuals will consume HMB-FA 3 times per day (8am, 12pm and 4pm).

Group Type ACTIVE_COMPARATOR

HMB-FA

Intervention Type DIETARY_SUPPLEMENT

High Intensity Interval Training

Intervention Type PROCEDURE

Interventions

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Placebo

Intervention Type DIETARY_SUPPLEMENT

HMB-FA

Intervention Type DIETARY_SUPPLEMENT

High Intensity Interval Training

Intervention Type PROCEDURE

Other Intervention Names

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beta-hydroxy-beta-methylbutyrate free acid (HMB-FA)

Eligibility Criteria

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Inclusion Criteria

* Recreationally-trained individuals with a VO2peak\>40 ml∙kg-1∙min-1.
* Free of any physical limitations as determined by the Confidential Medical and Activity questionnaire and/or PAR-Q
* Between the ages of 18 and 35

Exclusion Criteria

* Inability to perform physical exercise, as determined by the Confidential Medical and Activity questionnaire and/or PAR-Q
* Any chronic illness that causes continuous medical care
Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Metabolic Technologies Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Jeffery Stout, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Central Florida

Locations

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University of Central Florida, Sport and Exercise Science

Orlando, Florida, United States

Site Status

Countries

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United States

References

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Robinson EH 4th, Stout JR, Miramonti AA, Fukuda DH, Wang R, Townsend JR, Mangine GT, Fragala MS, Hoffman JR. High-intensity interval training and beta-hydroxy-beta-methylbutyric free acid improves aerobic power and metabolic thresholds. J Int Soc Sports Nutr. 2014 Apr 26;11:16. doi: 10.1186/1550-2783-11-16. eCollection 2014.

Reference Type DERIVED
PMID: 24782684 (View on PubMed)

Other Identifiers

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13-257

Identifier Type: OTHER

Identifier Source: secondary_id

MTI2013-CS03

Identifier Type: -

Identifier Source: org_study_id

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