Short or Long High Intensity Training

Sports Performance Clinical Trial

Official title:

Aerobic Short or Long High Intensity Interval Training - Does it Matter

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04075929
• Other study ID #: Aerobic short og long interval
• Status: Completed
• Phase: N/A
• Start date: November 1, 2017
• Est. completion date: December 20, 2017

Study information

• Verified date: August 2019
• Source: University of Agder
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 22
• Est. completion date: December 20, 2017
• Est. primary completion date: December 15, 2017
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Male
• Age group: 18 Years to 40 Years

Eligibility

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.

Related Conditions & MeSH terms

• Cycling
• Sports Performance
• Well-trained Athletes

Intervention

Other:
• Training effects on aerobic output
The cyclists were allowed to perform ad libitum low intensity (LIT) in addition to high intensity (HIT) sessions that were determined to each group. The cyclists completed 12 supervised HIT sessions during the intervention period, three HIT sessions per week with at least 48 hours between each HIT-session. All HIT sessions were performed as supervised group training sessions. Each HIT session started with an individual 30 minutes' warm up at low intensity (55-70% HRmax) interspersed by freely chosen progressive sprints. For all groups the power output during the recovery periods was 50 % of the power output used during work intervals. The cyclists in all groups were instructed to perform each interval session at their maximal sustainable intensity. Each session ended with 15-20 minutes' cool down (55-70% HRmax). All HIT sessions were supervised and performed in groups on the University of Agder's (UiA) premises at Spicheren fitness center in Kristiansand.

Locations

Country	Name	City	State
Norway	University of Agder	Kristiansand

Sponsors (1)

Lead Sponsor	Collaborator
University of Agder

Country where clinical trial is conducted

Norway, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Maximal oxygen uptake	VO2max	4 weeks
Secondary	Functional threshold power	FTP	4 weeks
Secondary	Peak power output	PPO	4 weeks