NCT03700671

High Intensity Interval Training Versus Circuit Training

Completed NA Results posted Last updated 17 February 2020

What this trial tests

NA trial testing High intensity interval training in High Intensity Interval Training in 42 participants. Completed in 13 December 2017.

Timeline

11 May 2016

Primary endpoint
11 May 2017

13 December 2017

Quick facts

Lead sponsor	University of Central Lancashire
Phase	NA
Status	Completed
Study type	INTERVENTIONAL
Allocation	randomized
Design	parallel
Masking	none
Primary purpose	basic science
Enrollment	42
Start date	11 May 2016
Primary completion	11 May 2017
Estimated completion	13 December 2017
Sites	1 location across United Kingdom

Drugs / interventions tested

• High intensity interval training
• Circuit training

Conditions studied

• High Intensity Interval Training — all drugs for High Intensity Interval Training →

Sponsor

University of Central Lancashire

Who can join

Adults 18 to 65, any sex, with High Intensity Interval Training. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Maximal Oxygen Consumption (ml.Kg-1.Min-1) Primary · Baseline and 8 weeks

Maximal oxygen consumption (ml.kg-1.min-1), as determined during a cardiopulmonary exercise test (CPET) represents the upper limit of aerobic fitness in humans. A low VO2max is associated with a greater risk of premature all-cause and cardiovascular mortality, independent of traditional risk factors and physical activity status. Conversely, increasing VO2max through exercise training may improve cardiometabolic health, quality of life and increase life-expectancy

Pre Intervention

Group	Value	95% CI
High Intensity Interval Training	31.5	± 7.1
Circuit Training	31.4	± 6.8

Post Intervention

Group	Value	95% CI
High Intensity Interval Training	35.4	± 7.3
Circuit Training	32.4	± 6.2

Oxygen Consumption at the Ventilatory Anaerobic Threshold Secondary · Baseline and 8 weeks

Oxygen consumption at the Ventilatory Anaerobic Threshold ml/kg/min. This measure will assess if individuals can exercise at higher intensities before lactate accumulation, thus becoming 'physiologically efficient

Pre Intervention

Group	Value	95% CI
High Intensity Interval Training	15.5	± 2.7
Circuit Training	15.6	± 3.0

Post Intervention

Group	Value	95% CI
High Intensity Interval Training	17.9	± 2.5
Circuit Training	16.2	± 3.1

Intervention Fidelity - Participants That Complied With the Exercise Protocols Secondary · 8 weeks

To assess if the interventions were delivered as intended, percentage of participants that complied with the exercise protocols

Group	Value	95% CI
High Intensity Interval Training	90	80 – 100
Circuit Training	86	76 – 96

The Percentage of Individuals That Responsed to the Intervention Secondary · 8 weeks

If participants had a postive increased in maximal oxygen consumption following the two interventions

Group	Value	95% CI
High Intensity Interval Training	100
Circuit Training	78

Sponsor's own description

High intensity interval training (HIIT) and circuit training (CT) are popular methods of exercise, eliciting improvements in cardiorespiratory fitness (CRF). However direct comparisons of these two training methods are limited.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.