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Effects of Alternating Altitude Training Versus Fixed-Altitude Training on Exercise Capacity and Physiological Adaptations in Elite Race Walkers: A Randomized Controlled Trial

16. juli 2026 opdateret af: Chaoran Han, Macao Polytechnic University

Effects of Alternating Altitude Training Versus Fixed-Altitude Training on Physical Performance and Physiological Adaptations in Elite Race Walkers: A Randomized Controlled Trial

This randomized controlled trial aims to compare the effects of alternating altitude training and fixed-altitude training on physical performance and physiological adaptations in elite race walkers living at altitude. Elite race walkers from Yunnan Province will be randomly assigned to either an alternating altitude training group or a fixed-altitude training group. The alternating altitude training group will perform selected training sessions under simulated higher-altitude conditions while completing the remaining sessions at their regular altitude training base. The fixed-altitude training group will complete all training sessions at the regular altitude. Physical performance, race walking performance, cardiovascular function, pulmonary function, and hematological parameters will be assessed before and after the intervention to evaluate the effectiveness of the two altitude training strategies.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

16

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Kina
      • Macao, Kina
        • Rekruttering
        • Macao Polytechnic University, Faculty of Health Sciences and Sports, Macao, China
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen

Tager imod sunde frivillige

Ja

Beskrivelse

Inclusion Criteria:

  • Male and female elite race walkers aged 16-26 years. Registered athletes from the Yunnan Provincial Race Walking Team. Long-term residents of high-altitude regions with regular altitude training experience.

Healthy and medically cleared to participate in high-intensity training and hypoxic exposure.

Able to complete the prescribed training program and all outcome assessments. Provided written informed consent before enrollment. For participants younger than 18 years, written informed consent will also be obtained from a parent or legal guardian.

Exclusion Criteria:

  • Any cardiovascular, respiratory, metabolic, neurological, or other medical condition contraindicating exercise or hypoxic exposure.

Musculoskeletal injury or illness affecting normal training or performance within the previous three months.

Current use of medications or supplements that may substantially influence physiological adaptation or exercise performance.

Failure to complete the intervention or outcome assessments according to the study protocol.

Withdrawal of informed consent at any time during the study.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Andet
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Alternating Altitude Training
Participants perform the prescribed training program using an alternating altitude strategy, with selected training sessions conducted under simulated higher-altitude conditions and the remaining sessions completed at the regular altitude training base.
Adfærdsmæssigt: Alternating Altitude Training
Participants complete the prescribed training program using an alternating altitude strategy, combining regular altitude training with selected sessions performed under simulated higher-altitude conditions.
Aktiv komparator: Fixed-Altitude Training
Participants perform the same prescribed training program entirely at the regular altitude training base throughout the intervention.
Adfærdsmæssigt: Fixed-Altitude Training
Participants complete the prescribed training program exclusively at the regular altitude training base.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Body Weight
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Body weight measured before and after the training period.
Baseline and immediately after completion of the 4-week intervention.
Body Fat Percentage
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Body fat percentage measured using bioelectrical impedance or other validated method.
Baseline and immediately after completion of the 4-week intervention.
Forced Vital Capacity (FVC)
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Forced vital capacity measured using spirometry before and after the intervention.
Baseline and immediately after completion of the 4-week intervention.
Maximal Voluntary Ventilation
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
MVV measured using standard pulmonary function testing protocol pre- and post-intervention.
Baseline and immediately after completion of the 4-week intervention.
Left Ventricular Volume
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Echocardiography measurement of left ventricular end-diastolic and end-systolic volume.
Baseline and immediately after completion of the 4-week intervention.
Ejection Fraction
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Echocardiography assessment of left ventricular ejection fraction pre- and post-training.
Baseline and immediately after completion of the 4-week intervention.
Myocardial Thickness
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Measurement of interventricular septum and left ventricular posterior wall thickness by echocardiography.
Baseline and immediately after completion of the 4-week intervention.
Maximal Oxygen Uptake
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Pre- and post-intervention measurement of VO₂max using standard exercise testing protocol to assess aerobic capacity
Baseline and immediately after completion of the 4-week intervention.
Countermovement Jump Height
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Countermovement jump (CMJ) height measured using a validated force platform or jump assessment system to evaluate lower-limb explosive power before and after the intervention.
Baseline and immediately after completion of the 4-week intervention.
Squat Jump Height
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Squat jump (SJ) height measured using a validated force platform or jump assessment system to assess concentric lower-limb explosive strength before and after the intervention.
Baseline and immediately after completion of the 4-week intervention.
Isometric Mid-Thigh Pull Peak Force
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Peak force during the isometric mid-thigh pull (IMTP) measured using a force platform to assess maximal isometric lower-limb strength before and after the intervention.
Baseline and immediately after completion of the 4-week intervention.
Isometric Mid-Thigh Pull Rate of Force Development
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Rate of force development (RFD) during the isometric mid-thigh pull (IMTP) measured using a force platform before and after the intervention.
Baseline and immediately after completion of the 4-week intervention.
Reactive Strength Index (RSI)
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Reactive Strength Index (RSI) calculated from repeated ankle hops using a force platform or validated jump assessment system to assess lower-limb reactive strength before and after the intervention.
Baseline and immediately after completion of the 4-week intervention.

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Red Blood Cell Count
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
RBC count measured from venous blood samples pre- and post-intervention.
Baseline and immediately after completion of the 4-week intervention.
Hemoglobin
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Hemoglobin concentration measured from venous blood samples.
Baseline and immediately after completion of the 4-week intervention.
Hematocrit
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Hemoglobin concentration measured from venous blood samples.
Baseline and immediately after completion of the 4-week intervention.
Erythropoietin
Tidsramme: Baseline and immediately after completion of the 4-week intervention.
Plasma EPO concentration measured from venous blood samples.
Baseline and immediately after completion of the 4-week intervention.

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Macao Polytechnic University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

20. juli 2026

Primær færdiggørelse (Anslået)

5. september 2026

Studieafslutning (Anslået)

5. september 2026

Datoer for studieregistrering

Først indsendt

14. juli 2026

Først indsendt, der opfyldte QC-kriterier

16. juli 2026

Først opslået (Faktiske)

21. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

21. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

16. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • AAT-RW-2026-01

Plan for individuelle deltagerdata (IPD)

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