Effects of 12 weeks of interval block resistance training versus circuit resistance training on body composition, performance and autonomic recovery in adults.

Effects of block versus circuit resistance exercise on body composition and performance in adults. Randomized controlled trial

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN17853333

Enrollment

Registered

2025-02-04

Start date

2025-02-01

Completion date

Unknown

Last updated

2025-04-28

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

Conditions

Overall fitness and recovery in healthy adults Other

Interventions

Current interventions as of 16/04/2025: The study involved a 12-week resistance training program with three weekly sessions (Monday, Wednesday, and Friday), each lasting 48 to 57 minutes. The particip

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Aged between 18 and 30 years and classified as a physically active adult. 2. Refrain from engaging in moderate or intense physical activity during the 48 hours prior to each session to prevent interference with acute training responses. 3. Attend all scheduled training sessions punctually throughout the 12-week intervention. 4. Read, understand, and sign the informed consent form before undergoing evaluations.

Exclusion criteria

Exclusion criteria: 1. Diagnosis of conditions such as hypertension, type 2 diabetes, coronary artery disease, or other cardiovascular or metabolic disorders. 2. Body mass index within the overweight or obese range, along with a waist circumference exceeding the high cardiometabolic risk threshold for the Chilean adult population. 3. Handgrip strength below the threshold for muscle weakness risk classification in the Chilean adult population. 4. Performance below the reference threshold for reduced functional capacity in the Chilean adult population. 5. Participation in another training program during the intervention, which could interfere with the study protocol response.

Design outcomes

Primary

Measure	Time frame
Body composition is measured using the Metabolic Equivalent of Task, Body Mass Index and waist circumference at baseline and 12 weeks	—

Secondary

Measure	Time frame
Current secondary outcome measures as of 16/04/2025: At baseline and 12 weeks: 1. Muscle strength measured using the right and left hand grip dynamometer 2. Speed assessed using a running anaerobic sprint test 3. Functional capacity measured using the 6-minute walking test 4. Recovery capacity using heart rate variability in the LF/HF ratio and RMSSD Previous secondary outcome measures: At baseline and 12 weeks: 1. Muscle strength measured using the right and left hand grip dynamometer 2. Speed assessed using a 35-meter sprint 3. Functional capacity measured using the 6-minute walking test 4. Recovery capacity using heart rate variability in the LF/HF ratio and RMSSD	—

Measure

Time frame

Current secondary outcome measures as of 16/04/2025: At baseline and 12 weeks: 1. Muscle strength measured using the right and left hand grip dynamometer 2. Speed assessed using a running anaerobic sprint test 3. Functional capacity measured using the 6-minute walking test 4. Recovery capacity using heart rate variability in the LF/HF ratio and RMSSD Previous secondary outcome measures: At baseline and 12 weeks: 1. Muscle strength measured using the right and left hand grip dynamometer 2. Speed assessed using a 35-meter sprint 3. Functional capacity measured using the 6-minute walking test 4. Recovery capacity using heart rate variability in the LF/HF ratio and RMSSD

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Countries

Chile

Contacts

Public ContactHéctor Fuentes Barria

hefuentes_@unap.cl+56 996702455

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026