NCT06553963

Brief Summary

The objective of this study is to evaluate the efficacy of physiological and biochemical monitoring along with nutritional support in improving the performance and well-being of female weightlifters during the critical weight reduction phase before competition. It also seeks to determine the safety and potential benefits of the personalized nutritional interventions. The primary questions this study aims to address are: Does personalized nutritional support, informed by physiological and biochemical monitoring, reduce the incidence of fatigue and improve sleep quality in female weightlifters during the pre-competition period? How do serum indicators change in response to the nutritional interventions, and what does this indicate about the athletes' health and performance? What are the perceived benefits and any potential adverse effects reported by the participants receiving the nutritional support? To assess the impact of the intervention, researchers will compare the outcomes of the experimental group, which receives the tailored nutritional support, to those of the control group, which follows standard practices without additional intervention. Participants will be required to: Consume the nutritional supplements or maintain their regular diet as assigned for the duration of the 1-month study. Attend scheduled visits to the research facility every two weeks for comprehensive health assessments, including blood tests for serum indicators and evaluations of fatigue levels and PSQI scores. Record their daily experiences, including dietary adherence, training intensity, perceived fatigue, sleep patterns, and any other relevant observations in a personal diary. By conducting this randomized controlled trial, the study will provide valuable insights into the role of targeted nutritional support in enhancing athletic performance and overall health during the demanding pre-competition weight reduction period.

Trial Health

35
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
28

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Aug 2024

Shorter than P25 for not_applicable

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

August 12, 2024

Completed
2 days until next milestone

First Posted

Study publicly available on registry

August 14, 2024

Completed
6 days until next milestone

Study Start

First participant enrolled

August 20, 2024

Completed
1 month until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 20, 2024

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

September 20, 2024

Completed
Last Updated

August 16, 2024

Status Verified

August 1, 2024

Enrollment Period

1 month

First QC Date

August 12, 2024

Last Update Submit

August 14, 2024

Conditions

Outcome Measures

Primary Outcomes (7)

  • Serum Testing: blood urea

    Approximately 2 ml of fasting venous blood was taken from the participants' elbow. Beckman Coulter Automated Biochemical Analyzer (California, USA) was used to measure blood urea.

    28 Days

  • Serum Testing: creatine kinase

    Approximately 2 ml of fasting venous blood was taken from the participants' elbow. Beckman Coulter Automated Biochemical Analyzer (California, USA) was used to measure creatine kinase.

    28 Days

  • Serum Testing: blood testosterone

    Beckman Coulter Chemiluminescence Immunoassay Analyzer (California, USA) was used to measure blood testosterone.

    28 Days

  • Serum Testing: cortisol

    Beckman Coulter Chemiluminescence Immunoassay Analyzer (California, USA) was used to measure blood cortisol.

    28 Days

  • Serum Testing: hemoglobin

    HemoCue Hb 301 Hemoglobinometer (Sweden) was used to measure hemoglobin.

    28 Days

  • Scale Testing: fatigue scores

    Participants were requested to assess their level of fatigue using the Visual Analogue Scale (VAS) for Fatigue, a validated measurement tool. On the VAS, a 10 cm line is marked, where '0' cm represents no fatigue and '10' cm represents the most severe fatigue possible. Higher scores on this scale indicate a greater degree of fatigue, with lower scores reflecting less fatigue.

    28 Days

  • Scale Testing: Pittsburgh Sleep Quality Index

    The Pittsburgh Sleep Quality Index (PSQI) is a questionnaire used to assess the sleep quality of the subject over the past month, composed of 18 self-rated items forming 7 components, with a total score ranging from 0 to 21 points, the higher the score, the worse the sleep quality.

    28 Days

Study Arms (2)

Control group

NO INTERVENTION

All participants followed their coaches' regular training plans for daily training (actual pre-competition training environment), without altering their personal routines or lifestyle habits.

Experimental group

EXPERIMENTAL

Participants in the experimental group received a four-week tailored nutrition program, developed by sports nutritionists based on athletes' biochemical profiles, body weight, training intensity, and dietary habits. The program included: Daily Dietary Logs: Monitoring food intake for immediate nutritional adjustments. Weekly Nutritional Consultations: Strategy refinement discussions with experts. Customized Nutritional Supplements: "Zinc Magnesium Multi-Vitamin Sports Nutrition Powder" was used to improve blood urea, cortisol, and hemoglobin levels, containing ingredients like rice bran lipid alcohol, magnesium, zinc, and B vitamins. Performance-Specific Supplements: "Endurance Sugar Pump" to lower creatine kinase levels during training and "Testosterone Synthesis Pump" to enhance testosterone, both by Weite Beijing Co., Ltd. Sleep Aid: "Melatonin Tablets" to ensure restful sleep, containing vitamin B6 and melatonin, produced by Dongli Beijing Co., Ltd.

Other: Control groupOther: Experimental group

Interventions

The control group maintained their regular diet and training without additional nutritional support.

Experimental group

Biochemical Monitoring and Nutritional Support

Experimental group

Eligibility Criteria

Age18 Years - 30 Years
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Age between 18 and 30 years old
  • At least 5 years of professional weightlifting training experience
  • Currently undergoing systematic training
  • Passed a health examination
  • The study complies with the Declaration of Helsinki and signed an informed consent form.

You may not qualify if:

  • Obvious injuries to the lower limb joints
  • Taking prescription medications (such as those affecting mood and sleep)
  • Abnormal cardiovascular function.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Weight Loss

Interventions

Control Groups

Condition Hierarchy (Ancestors)

Body Weight ChangesBody WeightSigns and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Epidemiologic Research DesignEpidemiologic MethodsInvestigative TechniquesResearch DesignMethods

Study Officials

  • Liang Cheng, Dr

    Chengdu Sport University

    STUDY CHAIR

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

August 12, 2024

First Posted

August 14, 2024

Study Start

August 20, 2024

Primary Completion

September 20, 2024

Study Completion

September 20, 2024

Last Updated

August 16, 2024

Record last verified: 2024-08

Data Sharing

IPD Sharing
Will not share