Effect of Exercise With Low Intensity and Longer Duration Versus High Intensity Interval Training

Does Endurance Exercise With Low Intensity and Longer Duration Improve Aerobic Capacity to the Same Extent as High Intensity Interval Training?

Status

Completed

Phases

Phase 2

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT01443507

Enrollment

Registered

2011-09-29

Start date

2011-10-31

Completion date

2012-10-31

Last updated

2014-12-10

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

Conditions

Healthy Subjects

Keywords

aerobic capacity, maximal oxygen uptake, aerobic endurance, work economy, lactate threshold, endurance training, exercise intensity

Brief summary

The purpose of the study is to compare exercise at 70% of maximal heart rate were total energy expenditure is twice compared to interval training at 90- 95% of maximal heart rate. Since 70% of maximal heart rate is well above the minimum threshold for improvements in maximal oxygen uptake it should be suited to investigate the effect of duration.

Interventions

OTHERendurance exercise of different duration and intensity

Two interventions are compared with aerobic capacity as the main outcome. one group exercise at 70% of maximal heart rate for 90 minutes 3 times per week. group two exercise performe10 minutes warm up at 70% of maximal heart rate 4 x 4 minutes intervals at 90-95% of maximal heart rate with 3 minutes active pause at 70% of maximal heart rate in between, and finally 5 minutes cooling down at 70 % of maximal heart rate.

Study design

Allocation

RANDOMIZED

Intervention model

FACTORIAL

Primary purpose

PREVENTION

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

18 Years to 30 Years

Healthy volunteers

Yes

Inclusion criteria

* healthy non smoking men and woman, age 18-30

Exclusion criteria

* pathological findings measured by ekko/doppler, high cholesterol or high blood pressure

Design outcomes

Primary

Measure	Time frame
changes in maximal oxygen uptake	Maximal oxygen uptake will be measured at day 1 before training, then we will measure changes in maximal oxygen uptake after 8 weeks, and finally a follow up measurement of changes in maximal oxygen uptake after 1 year

Secondary

Measure	Time frame	Description
endurance performance	one year	work economy, lactate threshold will be measured toghether with maximal oxygen uptake to determine endurance performance.
health effects	one year	coronary flow reserve, blood pressure, maximal oxygen uptake

Countries

Norway

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026