Interval Training in Young Healthy Individuals

Norwegian University of Science and Technology

Status: Completed

Conditions: Exercise Test; Healthy Subjects

Treatments: Behavioral: High frequency training; Behavioral: normal frequence training

Study type: Interventional

Funder types: Other

Identifiers

NCT00733941

4.2008.1755

Details and patient eligibility

About

Individuals who participate in regular physical exercise possess a lower prevalence of cardiovascular risk factors such as hypertension, type 2 diabetes, obesity and hypercholesterolemia, and aerobic exercise is therefore considered an important adjuvant therapy in risk factor modification and to promote health.

The main focus of the present study is therefore to detect how rapid it is possible to increase aerobic capacity with interval running exercise.

The hypothesis is that it is possible to improve maximal oxygen uptake faster when increasing training frequency. The total gain in maximal oxygen uptake will however be the same between the two groups when they have performed the same amount of training

Full description

We will perform aerobic interval training at an intensity of 90-95% of maximum heart rate in healthy individuals. The subjects will be randomly assigned to carry out a total of 24 exercise-sessions, either at 3 times per week or 8 times per week.

The two groups will carry out 24 training sessions before 8 weeks of detraining will provide how rapidly aerobic capacity is lost due to inactivity. After the detraining period a retraining phase is introduced to detect if improvements in aerobic capacity occur more rapidly compared to before the first training period

The subjects will be tested for oxygen uptake, pumping capacity of the heart, blood volume, skeletal muscle enzyme activity, endothelial function.

Enrollment: 24 patients

Sex: All

Ages: 18 to 27 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• BMI<27, non-smokers, train less that 1-2 times per week, VO2max <60 for male and <50 for female.

Exclusion criteria

• Hypertension, diabetes and cardiovascular disease.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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24 participants in 2 patient groups

High frequency training

Experimental group

Description:

24 interval exercises performed 8 times per week

Treatment:

Behavioral: High frequency training

Normal frequency training

Experimental group

Description:

24 interval exercises performed 3 times per week

Treatment:

Behavioral: normal frequence training