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Changes in Cardiac Index and Oxygen Uptake Through Polarized Versus Interval Training: A 10-Week Intervention Study in Recreational Athletes

Changes in Cardiac Index and Oxygen Uptake Through Polarized Versus Interval Training: A 10-Week Intervention Study in Recreational Athletes

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
DRKS
Registry ID
DRKS00036767
Enrollment
68
Registered
2025-05-07
Start date
2025-05-28
Completion date
Unknown
Last updated
2026-04-27

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

Conditions

Z00

Interventions

Group 1: Intervention arm 1 - Interval Training (IT): Participants in the interval training group complete three training sessions per week over a period of ten weeks, following a two-week familiariza

Sponsors

Universität Leipzig
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 45 Years

Inclusion criteria

Inclusion criteria: Healthy participants At least 30 minutes of running per week

Exclusion criteria

Exclusion criteria: More than 6 hours of running training per week Regular participation in running competitions Any cardiopulmonary disease Any pulmonary disease Acute viral or bacterial infections or infectious diseases Acute musculoskeletal injuries Pregnancy Lack of willingness to cooperate (non-compliance) Physical, mental, or other conditions that impair the ability to participate in testing Concurrent participation in other clinical studies Dependency relationship with the study investigators

Design outcomes

Primary

MeasureTime frame
Change in maximal oxygen uptake (ml/min/kg) after the 10-week training intervention

Secondary

MeasureTime frame
Change in maximal cardiac index (l/min/m²) after the 10-week training intervention Training adherence (proportion of fully completed training sessions) Change in body composition (body cell mass, body fat percentage) Investigation of sex-specific differences regarding the changes in cardiac index and oxygen uptake

Countries

Germany

Contacts

Public ContactJohannes Voß

Universität Leipzig

johannes.voss@uni-leipzig.de+49 341 97 31 795

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: May 1, 2026