NCT07786935

Brief Summary

To investigate the effects of sub-altitude training on the physical performance and psychological state of adolescent swimmers and to analyze the possible mechanisms underlying these effects

Trial Health

87
On Track

Trial Health Score

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

Enrollment
20

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Jul 2025

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

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

Study Start

First participant enrolled

July 19, 2025

Completed
1 month until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 23, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

August 23, 2025

Completed
12 months until next milestone

First Submitted

Initial submission to the registry

August 22, 2026

Completed
4 days until next milestone

First Posted

Study publicly available on registry

August 26, 2026

Completed
Last Updated

August 26, 2026

Status Verified

August 1, 2026

Enrollment Period

1 month

First QC Date

August 22, 2026

Last Update Submit

August 22, 2026

Conditions

Adolescent Swimmers

Outcome Measures

Primary Outcomes (1)

  • change of Creatine kinase (CK)

    1 month

Study Arms (1)

Experimental group

EXPERIMENTAL
Behavioral: sub-altitude training

Interventions

sub-altitude trainingBEHAVIORAL

sub-altitude training

Experimental group

Eligibility Criteria

Age12 Years - 18 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • Age 12-18 years;
  • At least 3 years of systematic swimming training;
  • No history of severe lower-limb sports injuries within the past 6 months (defined as injuries resulting in a training hiatus of ≥4 weeks);
  • No participation in any form of hypoxic training during the 2 months prior to the experiment.

You may not qualify if:

  • Presence of any cardiovascular, metabolic, or musculoskeletal disorders that may affect testing or training;
  • Inability to guarantee attendance during the experiment (expected number of absences \> 2)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Guangzhou Sport University

Guangzhou, Guangdong, 510000, China

Location

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
OTHER
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Director

Study Record Dates

First Submitted

August 22, 2026

First Posted

August 26, 2026

Study Start

July 19, 2025

Primary Completion

August 23, 2025

Study Completion

August 23, 2025

Last Updated

August 26, 2026

Record last verified: 2026-08

Locations

CN(1)