NCT05874999

Acute Effects of Supramaximal High-Intensity Interval Training in People With COPD

Feasibility and Acute Effects of Supramaximal High-Intensity Interval Training in People With COPD

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 32 (actual)
• Sponsor: Umeå University · Academic / Other
• Sex: All
• Age: 40 Years
• Healthy volunteers: Accepted

Summary

High-intensity exercise is essential for optimal development of cardiorespiratory fitness and health. This is, however, challenging for most people with chronic obstructive pulmonary disease (COPD) due to ventilatory limitations, leading to exercise at lower intensities accompanied by suboptimal stress on the cardiovascular and muscular system. The aims of this cross-over trial is: 1. To compare the acute effects of short-duration supramaximal high-intensity interval training (HIIT) vs. traditional moderate-intensity continuous training (MICT) in people with COPD and matched healthy controls (HC). 2. To investigate the feasibility of supramaximal HIIT in people with COPD and matched HC. 3. To compare the cardiorespiratory demand, exercise intensity and symptoms during a modified Borg Cycle Strength Test (BCST) and a cardiopulmonary exercise test (CPET) in people with COPD and HC.

Detailed description

In this study, eligible participants attended the facility four times within 14 days with at least 48 hours of rest between visits. Exercise tests (visit 1, week 1): After pulmonary functions tests, a CPET on a stationary bicycle was performed according to international guidelines. After 1.5 hours of recovery, a BCST was performed to assess anaerobic exercise capacity and determine exercise intensities for supramaximal HIIT. Exercise sessions (visit 2 - week 1; visit 3 - week 2; visit 4 - week 2): The order of the two first exercise sessions (HIIT at 60% of MPO6 or MICT) on a stationary bicycle were randomized. The exercise session at HIIT at 80% of MPO6 was always the third exercise session. During all exercise sessions, blood collection was performed at baseline after a 15-minute seated rest. During HIIT, blood was collected immediately after, and 30 minutes after the 10-minute HIIT period. For MICT, blood was collected after 10 minutes (isotime in relation to HIIT), immediately after, and 30 minutes of cycling at 60% MAP.

Conditions

• COPD
• Healthy Older Adults

Interventions

Type	Name	Description
OTHER	Supramaximal High-Intensity Interval Training at 60% of MPO6	Supramaximal HIIT is performed as 10×6 second intervals against a load of 60% of maximum mean power output for 6 seconds (MPO6) with a 54 second recovery between intervals. The MPO6 was estimated from the BCST. Duration supramaximal HIIT: 10 minutes Warm-up and cool-down: 5 minutes at 30% of maximum aerobic power (MAP) obtained during maximal incremental cardiopulmonary exercise test (CPET) on a stationary bicycle.
OTHER	Moderate-Intensity Continuous Training	MICT is performed against a load of 60% of MAP obtained during a maximal incremental CPET on a stationary bicycle. Duration MICT: 20 minutes Warm-up and cool-down: 5 minutes at 30% of MAP obtained during maximal incremental CPET on a stationary bicycle.
OTHER	Supramaximal High-Intensity Interval Training at 80% of MPO6	Supramaximal HIIT is performed as 10×6 second intervals against a load of 80% of MPO6 with a 54 second recovery between intervals. The MPO6 was estimated from the BCST. Duration supramaximal HIIT: 10 minutes Warm-up and cool-down: 5 minutes at 30% of MAP obtained during maximal incremental CPET on a stationary bicycle.

Timeline

• Start date: 2022-03-07
• Primary completion: 2022-12-22
• Completion: 2022-12-22
• First posted: 2023-05-25
• Last updated: 2023-06-07

Locations

1 site across 1 country: Sweden