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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 oppdatert av: 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.

Studieoversikt

Status

Rekruttering

Forhold

Intervensjon / Behandling

Studietype

Intervensjonell

Registrering (Antatt)

16

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Studiesteder

  • Kina
      • Macao, Kina
        • Rekruttering
        • Macao Polytechnic University, Faculty of Health Sciences and Sports, Macao, China
        • Ta kontakt med:

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Voksen

Tar imot friske 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

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Annen
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: 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.
Atferdsmessig: 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.
Atferdsmessig: Fixed-Altitude Training
Participants complete the prescribed training program exclusively at the regular altitude training base.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
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
Tiltaksbeskrivelse
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.

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Macao Polytechnic University

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

20. juli 2026

Primær fullføring (Antatt)

5. september 2026

Studiet fullført (Antatt)

5. september 2026

Datoer for studieregistrering

Først innsendt

14. juli 2026

Først innsendt som oppfylte QC-kriteriene

16. juli 2026

Først lagt ut (Faktiske)

21. juli 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

21. juli 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

16. juli 2026

Sist bekreftet

1. juli 2026

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

  • AAT-RW-2026-01

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