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High-intensity Interval Training at two different Altitudes on the Physiological, Hematological, Hemodynamic and Running Performance of Trained Long-distance Athletes

Effects of High-intensity Interval Training at two different Altitudes on the Physiological, Hematological, Hemodynamic and running Performance Metrics of Trained Long-distance Athletes

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
PACTR
Registry ID
PACTR202505829036073
Enrollment
48
Registered
2025-05-19
Start date
2024-09-15
Completion date
Unknown
Last updated
2026-09-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Respiratory high-intensity interval training performed at low and moderate altitudes

Interventions

High intensity interval training at moderate altitude 2850 m
High intensity interval training at low altitude 1220 m
control group at 2850 m

Sponsors

Debark University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: If participants 1) were at least five years of training age, 2) were 18 years of chronological age, 3) did not perform systematic training during a transition period, 4) had at least a history of regional competition, 5) trained and competed from 3 km--to-marathon events, 6) were not trained or exposed to low altitudes <1,500 m within the previous three months for more than 48 hours and 7) provided a completed physical activity prescreening questionnaire and informed consent documents.

Exclusion criteria

Exclusion criteria: Participants with recent illnesses or injuries that limit training and racing, such as heat allergies, epistaxis, malaria, fever, gastrointestinal distress, pregnancy, and anemia. Those who could not provide informed consent or who were missing more than 20% of the usual training or intervention

Design outcomes

Primary

MeasureTime frame
physiological parameters;Hematological parameters;5 km running performance

Secondary

MeasureTime frame
Hemodynamics

Countries

Ethiopia

Contacts

Public ContactZerihun Birhanu

Bahir Dar University

birukzer04@gmail.com+251961014088

Outcome results

None listed

Source: PACTR (via WHO ICTRP) · Data processed: Sep 19, 2026