Decremental Exercise: a New Training Approach?

NCT03155152 | Completed

• 1 other identifier: DECT_HIIT_2017
• Study Type: interventional
• Target: 55
• Locations: 1 country
• Sites: 1

Brief Summary

Different types of high-intensity interval training (HIIT) sessions are used by athletes in order to improve their physical performance, but innovative approaches to training are lacking. Therefore, in Part A of this study the physiological response to a standard HIIT and a new decremental exercise training (DECT) will be compared in runners and cyclists. Next, in Part B the training effects of a 4-week block of the HIIT and DECT will be compared.

Conditions

Exercise Performance of Fit Athletes

Outcome Measures

Primary Outcomes (1)

• Change in exercise performance

  Time taken to cover a fixed distance, in minutes

  measured before and after the 4-week training block, during a time-trial (40 km cycling or 10 km running)

Secondary Outcomes (2)

• Change in maximal oxygen uptake

  Measured during a maximal incremental exercise test before and after the 4-week training block

• Average oxygen uptake

  The two training session are performed within one week

Study Arms (2)

DECT Group

EXPERIMENTAL

The DECT session consists of four bouts of 4 min high-intensity "decremental" exercise with 3 min of active recovery between bouts. Load is progressively decreased throughout each exercise bout. The training period will last for a total of 4 weeks, with three weekly sessions of supervised training

Other: DECT

HIIT Group

ACTIVE COMPARATOR

The HIIT session consists of four bouts of 4 min high-intensity "decremental" exercise with 3 min of active recovery between bouts. Load is kept constant throughout each exercise bout. The training period will last for a total of 4 weeks, with three weekly sessions of supervised training

Other: HIIT

Interventions

DECT OTHER

The DECT program consists of a 4-week training intervention with three weekly sessions of high-intensity interval training, in which during each exercise bout the workload is imposed in a decremental fashion.

DECT Group

HIIT OTHER

The HIIT program consists of a 4-week training intervention with three weekly sessions of high-intensity interval training, in which during each exercise bout the workload is kept constant.

HIIT Group

Eligibility Criteria

• Age: 18 Years - 40 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Age: 18-40 years
• Healthy, i.e. normal physical and mental status (not taking any medication on a regular basis for more than a month, except contraceptive medication)
• Normal Body-Mass-Index (BMI): 18.5-24.9 kg·m-2
• Well-trained athletes: V̇O2max \> 55.1 ml·min-1·kg-1 for men and \> 50.1 ml·min-1·kg-1 for women
• Normal lung function
• Non-smoking
• Willing to adhere to the general study rules

You may not qualify if:

• Women who are pregnant or breast feeding
• Intention to become pregnant during the course of the study
• Known or suspected non-compliance, drug or alcohol abuse
• Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, etc. of the participant
• Previous enrolment into the same part (A or B) of the current study
• Enrolment of the investigator, his/her family members, employees and other dependent persons
• Acute or chronic illness
• Intake of medications affecting performance or the respiratory, cardiovascular or neuromuscular system
• Insufficient training history (\<3 yrs of participation in competitive cycling/running) or training volume (\<40 km running/week or 150 km cycling/week) in the previous 6 months
• Recent (\<3 months) history of orthopaedic injury or participation in structured high-intensity training blocks

Sponsors & Collaborators

• Swiss Federal Institute of Technology: lead

Study Sites (1)

Exercise Physiology Lab, Institute of Human Movement Sciences and Sport, ETH Zurich

Zurich, Canton of Zurich, 8057, Switzerland

Location

Study Officials

• Christina M Spengler, Prof.

  ETH Zurich

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 12, 2017
• First Posted: May 16, 2017
• Study Start: June 1, 2017
• Primary Completion: December 11, 2019
• Study Completion: December 11, 2019
• Last Updated: March 18, 2020

Record last verified: 2019-02

Data Sharing

• IPD Sharing: Will not share

Locations

CH (1)