Short or Long High Intensity Training

Not Applicable

Completed

• Conditions: Sports Performance; Well-trained Athletes; Cycling

• Registration Number: NCT04075929
• Lead Sponsor: University of Agder

Brief Summary

To compare the effects of short and long high intensity interval training (HIT) conducted with the same total accumulated duration on physiological- and performance parameters during a 4-week training period.

Detailed Description

Studies among elite athletes have documented the importance of large amounts of training volume in order to perform at a high level in endurance sports. It is also well documented that both low intensity training (LIT), moderate intensity training (MIT) and high intensity training (HIT) should be included in the overall training efforts. It is well documented that HIT has a positive effect on the aerobic endurance among both elite athletes and recreational athletes.

Despite the fact that there is general agreement that HIT is an important part of the overall training, it is unclear how this part of the training should be organized in order to optimize the training effects. The adaptions of endurance performance seem to depend on both the intensity and the accumulated duration of the HIT sessions. Therefore, the aim of this study was to compare the effects of SI and LI training, including equal accumulated HIT duration, during a 4-week intervention period, conducted as 4x8-min with 2-min recovery periods, 4x(12x40/20-sec) with 2-min recovery periods and 4x(8x40/20-sec) with 2-min recovery periods, in different physiological- and performance parameters among well-trained cyclists.

Study Timeline

• Study Start: 2017-11-01
• Primary Completion: 2017-12-15
• Study Completion: 2017-12-20
• Status Verified: 2019-08
• Study First Submitted: 2019-08-29
• Study First Submitted QC: 2019-08-30
• Last Update Submitted: 2019-08-30
• Study First Posted: 2019-09-03
• Last Update Posted: 2019-09-03

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Male
• Target Recruitment: 22

Inclusion Criteria

• male < 40 years,
• peak oxygen uptake (VO2peak) > 55 ml.kg-1.min-1,
• training volume >3 sessions per week (within cycling)
• absence of disease and injuries.

Exclusion Criteria

• disease/injuries
• frequent absence of HIT sessions during the period.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Maximal oxygen uptake	4 weeks	VO2max

Secondary Outcome Measures

Name	Time	Method
Functional threshold power	4 weeks	FTP
Peak power output	4 weeks	PPO

Trial Locations

Locations (1)

University of Agder; 🇳🇴 Kristiansand, Norway