The Effect of Individual Sodium Citrate Consumption on Repeated Sprint Performance in Female Soccer Players | NCT07737327

NCT07737327

Overview

NCT ID: NCT07737327
Lead Sponsor: Hacettepe UniversityOTHER
Official Title: The Acute Effects of Individually Timed Sodium Citrate Ingestion on Repeated Sprint Performance in Professional Female Soccer Players: A Randomized, Double-Blind, Placebo-Controlled Crossover Study
Brief Summary: The aim of this research is to determine whether sodium citrate supplementation, taken at the best individual time, would improve repeated sprint performance in professional female soccer players.

The main questions it aims to answer are:

Does sodium citrate improve sprint times, peak power, minimum power, and mean power during repeated sprints?

Does sodium citrate lower fatigue index (the drop in power across sprints) during repeated sprint exercise?

Does sodium citrate change blood bicarbonate, pH, and lactate levels before and after exercise?

Does sodium citrate affect how hard exercise feels (perceived exertion)?
Conditions: Exercise-Induced Fatigue

Status and Timeline

Status: Not yet recruiting
Last Update Posted: Jul 30, 2026Actual
Start Date: Aug 20, 2026Estimated
Primary Completion Date: Nov 30, 2026Estimated
Completion Date

Participation Criteria

Ages Eligible for Study: Adult (18-64)
Sexes Eligible for Study: Female
Accepts Healthy Volunteers?: Yes
Eligibility Criteria: Inclusion Criteria:

Female professional soccer players competing in the Turkish Women's Third League

Age between 18-25 years

Active training status (minimum 3 sessions per week)

Regular menstrual cycles

Both experimental trials scheduled in the same phase of the menstrual cycle, outside of menstruation

No use of nutritional supplements in the 4 weeks prior to the study

Willingness to provide written informed consent

Exclusion Criteria:

Use of oral contraceptives

Irregular menstrual cycle

History of gastrointestinal disorders

Any musculoskeletal injury preventing maximal sprint performance

Smoking

Use of any medication that may affect acid-base balance

Pregnancy

Study Plan

Study Type: Interventional
Phase: Not Applicable
Enrollment: 20Estimated
Primary Purpose: Basic Science
Allocation: Randomized
Interventional Model: Crossover Assignment
Masking: Double

Contacts and Locations

Central Contacts: Dilara KURU, PhD CandidateContact
dytdilarakuru@gmail.com+905317242084

Similar Studies

Participant Group/Arms

Sodium CitrateExperimental

Participants will ingest sodium citrate at a dose of 0.5 g/kg body weight dissolved in flavored water. Capillary blood sampling will begin 90 minutes post-ingestion and continue at regular intervals. Exercise will begin when blood bicarbonate concentration reaches its individual peak (T\_peak).

Dietary Supplement: Sodium Citrate Oral Product

PlaceboExperimental

Participants will ingest sodium chloride (NaCl) at a taste-matched dose. Exercise will begin 120-150 minutes post-ingestion, consistent with the expected digestion timeline and the typical T\_peak window observed with sodium citrate supplementation.

Other: Placebo