Step-Up vs. Running Exercise at Matched Heart Rate Zones in Sedentary Males

Assessment of Cardiovascular, Autonomic, and Isometric Leg Strength Adaptations Following Step-Up Versus Running Exercise at Matched Heart Rate Zones in Sedentary Males

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.

Inclusion Criteria:

• 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

Exclusion Criteria:

• 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