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Workload of Water Polo Players Following a Phosphorus Manipulated High Carbohydrate Meal

NCT03101215 · Status: UNKNOWN · Phase: NA · Type: INTERVENTIONAL · Enrollment: 17

Last updated 2017-04-05

No results posted yet for this study

Summary

Phosphorus is a widely used sport supplement. Most athletes who use it follow a phosphorus loading approach which consists of a weeklong phosphorus intake of 3-4 gr per day for optimal effect. The ergogenic potential of phosphorus is believed to be related to several factors including its ability to a) enhance ATP availability for energy expenditure and b) increase plasma content of 2.3-DPG (2.3-disphosphoglycerate) that is known to reduce oxygen affinity to hemoglobin and consequently enhances its release in the exercising tissue. Additionally, phosphorus was reported to increase peripheral glucose uptake and thus glycogenesis and glycogen storage. We have recently observed that the peripheral glucose uptake was stimulated by co-ingestion of phosphorus with meal, while pre ingestion failed to do so. Thus it is reasonable to postulate that phosphorus co-ingestion with meal improves ergogenesis through enhancing glycogen storage. The aim of this experiment is to investigate whether acute phosphate supplementation of a glucose load is responsible for the performance enhancement. This may help in explaining the controversies surrounding the impact of phosphorus on performance. A cross over study will be conducted on water polo players. In brief, overnight fasted subjects, will be given glucose load with or without phosphorus. Three hours later their performance will be measured using an ergometer cycling machine.

Conditions

  • Energy Expenditure

Interventions

DIETARY_SUPPLEMENT

phosphorus

adding of phosphorus to high carbohydrate meal

Sponsors & Collaborators

  • American University of Beirut Medical Center

    lead OTHER

Principal Investigators

  • omar obeid, PhD · American University of Beirut Medical Center

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
DOUBLE
Model
CROSSOVER

Eligibility

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

Timeline & Regulatory

Start
2017-03-24
Primary Completion
2018-03-24
Completion
2018-03-24

Countries

  • Lebanon

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 NCT03101215 on ClinicalTrials.gov