NCT07585617

Brief Summary

This study compares the effects of two aerobic exercise methods - loaded step-up exercise and treadmill running - on cardiovascular fitness, leg strength, heart rate variability, and recovery in sedentary adult males. Both exercise groups will train at 80-85% of maximum heart rate, three sessions per week for six weeks. A control group will not participate in any training. Measurements of estimated VO₂max, isometric leg strength, resting heart rate, heart rate variability indices, and heart rate recovery will be taken before and after the intervention.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
36

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Feb 2024

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

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

February 20, 2024

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 28, 2024

Completed
13 days until next milestone

Study Completion

Last participant's last visit for all outcomes

June 10, 2024

Completed
1.9 years until next milestone

First Submitted

Initial submission to the registry

May 6, 2026

Completed
8 days until next milestone

First Posted

Study publicly available on registry

May 14, 2026

Completed
Last Updated

May 14, 2026

Status Verified

May 1, 2026

Enrollment Period

3 months

First QC Date

May 6, 2026

Last Update Submit

May 12, 2026

Conditions

Keywords

Exercise interventionHeart rate variabilityVO2maxIsometric strengthStep-up exerciseAerobic training

Outcome Measures

Primary Outcomes (2)

  • Estimated VO2max

    Estimated maximal oxygen uptake assessed via Yo-Yo Intermittent Recovery Test Level 1

    Baseline and 6 weeks

  • Isometric Leg Strength

    Maximum isometric leg strength measured using a Takei back-leg lift dynamometer

    Baseline and 6 weeks

Secondary Outcomes (2)

  • Heart Rate Variability

    Baseline and 6 weeks

  • Heart Rate Recovery

    Weeks 1 through 6

Study Arms (3)

Step-up Exercise Group (STP)

EXPERIMENTAL

Participants performed loaded step-up exercises at 80-85% of maximum heart rate using a load of 20% body weight, 3 sessions per week for 6 weeks with progressive volume.

Behavioral: Loaded Step-Up Exercise

Treadmill Running Group (R)

ACTIVE COMPARATOR

Participants performed continuous treadmill running at 80-85% of maximum heart rate, 3 sessions per week for 6 weeks with progressive volume.

Behavioral: Treadmill Running

Control Group (C)

NO INTERVENTION

Participants did not engage in any structured exercise training during the 6-week period.

Interventions

Step-up exercise performed on an adjustable platform at individually assigned heights (35 cm or 40 cm, based on participant height), with a load equal to 20% of body weight, at 80-85% of maximum heart rate, 3 sessions per week for 6 weeks with progressive volume increase.

Step-up Exercise Group (STP)

Continuous treadmill running at 80-85% of maximum heart rate, 3 sessions per week for 6 weeks with progressive volume increase.

Treadmill Running Group (R)

Eligibility Criteria

Age18 Years - 40 Years
Sexmale(Gender-based eligibility)
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Male, aged 18-40 years
  • Sedentary - no participation in structured exercise programs for at least 6 months prior to the study
  • Free from chronic diseases
  • No musculoskeletal injuries or surgical interventions within the last 6 months

You may not qualify if:

  • Female sex
  • Age below 18 or above 40 years
  • Participation in structured exercise within the last 6 months
  • Presence of chronic disease
  • Musculoskeletal injury or surgical intervention within the last 6 months

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Ankara University Faculty of Sport Sciences

Ankara, Golbasi, Turkey (Türkiye)

Location

MeSH Terms

Conditions

Sedentary Behavior

Condition Hierarchy (Ancestors)

Behavior

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
BASIC SCIENCE
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

May 6, 2026

First Posted

May 14, 2026

Study Start

February 20, 2024

Primary Completion

May 28, 2024

Study Completion

June 10, 2024

Last Updated

May 14, 2026

Record last verified: 2026-05

Data Sharing

IPD Sharing
Will not share

Locations