Interval Training and Performance in Mountain Bikers

Physical Activity Clinical Trial

Official title:

Effect of Intermittent Versus Interval Training on Mountain Bike Cross-country Performance: a Parallel-group Randomized Trial

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT01944865
• Other study ID #: UGF
• Status: Completed
• Phase: N/A
• First received: August 31, 2013
• Last updated: September 13, 2013
• Start date: October 2010
• Est. completion date: August 2013

Study information

• Verified date: September 2013
• Source: Universidade Gama Filho
• Contact: n/a
• Is FDA regulated: No
• Health authority: Brazil: Ethics Committee
• Study type: Interventional

Clinical Trial Summary

The aerobic fitness is important for mountain bikers, but riders should also be able to generate maximal and supramaximal efforts in some crucial phases of the competition. Although there is an increase interest in high-intensity aerobic training, to investigators knowledge, there are no studies examining the effects of interval (INTV) or intermittent training (INTM) in mountain bikers. The aim of this study was to compare the effects of INTV and INTM on aerobic fitness variables (peak power output, Wmax, lactate threshold, and onset of blood lactate accumulation) but more importantly on performance as measured using a controlled mountain bike race, i.e. simulation. The investigators hypothesized that INTV and INTM training were equally effective in improving Wmax, Lactate threshold and onset of blood lactate accumulation, but INTV was superior in enhancing performance in mountai bike race simulation.This hypothesis is due to studies that have shown higher gains in performance with long duration of aerobic high intensity interval training in comparison to the shorter training at a higher intensity.

Description:

The study is a controlled and randomized trial.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 16
• Est. completion date: August 2013
• Est. primary completion date: August 2013
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Male
• Age group: 20 Years to 50 Years

Eligibility

Inclusion Criteria:

• Specific training in the mountain bike sport

Exclusion Criteria:

• Use of pharmacological substances

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject)

Related Conditions & MeSH terms

• Physical Activity

Intervention

Other:
• Interval Training
The interval training group consisted of 7 to 10 repetitions of 4-6 min at the highest intensity sustainable, the active recovery was 4-6 min in intensity from 10 to 15 of scale of perceived exertion CR100.
• Intermittent Training
The riders of intermittent training group completed 8 to 12 repetitions of 30 s all-out with 4 min of active recovery.

Locations

Country	Name	City	State
Brazil	Gama Filho University	Rio de Janeiro

Sponsors (1)

Lead Sponsor	Collaborator
Universidade Gama Filho

Country where clinical trial is conducted

Brazil, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Interval Training and Performance in Mountain Bikers	The aim of this study was to compare the effects of interval (INTV) and intermittent training (INTM) on aerobic fitness variables (peak power output, Wmax, lactate threshold, and onset of blood lactate accumulation) and performance as measured using a controlled MTB race, i.e. simulation. Pre to post differences were examined using two-way ANOVA, with a factor time on two levels (pre, post), and a factor group on two levels (INTV and INTM). Differences between groups post-training were also analyzed with ANCOVA using the pre-training values as covariate. These differences were calculated after log transforming the dependent variables. The difference between groups in the primary outcome (performance) was also analyzed using a magnitude-based inferences approach. The smallest worthwhile difference for the performance was considered to be 1%.	Six weeks	No