Clinical Research Directory
Browse clinical research sites, groups, and studies.
Effects of High-Intensity Interval Training (HIIT) on Physiological Responses in Alpine Skiers
Sponsor: TUNC ILCIN
Summary
The aim of this study was to investigate the effects of high-intensity interval training (HIIT) on anaerobic performance and cardiorespiratory responses in alpine skiing athletes. The study included 40 male alpine skiers aged 16-22 years residing in Bitlis, Türkiye, with 20 participants in the experimental group and 20 in the control group. Throughout the study, all participants continued similar regular alpine skiing training programs to control for potential differences in training volume and fitness levels. Considering the competition schedule, the intervention period was designed to last 12 weeks. During this period, the experimental group performed high-intensity interval training twice per week in addition to their regular skiing training, while the control group continued their regular training program. Exercise intensity during HIIT sessions was maintained at 85-95% of the athletes' maximum heart rate. Cardiorespiratory performance was evaluated using a maximal exercise test to assess maximal oxygen uptake (VO₂max), respiratory quotient (RQ), maximum heart rate (HRmax), and oxygen uptake per heartbeat (VO₂/HR). Anaerobic performance was assessed using the Wingate anaerobic power test, including peak power, average power, minimum power, power drop, and total energy output. The Shapiro-Wilk test was used to assess data normality. Paired-samples t-tests were used for within-group pretest-posttest comparisons, while independent-samples t-tests were used for between-group comparisons. The statistical significance level was set at p \< 0.05. The study was designed to evaluate the potential contribution of a 12-week HIIT program to anaerobic performance and cardiorespiratory adaptations in alpine skiing athletes. Keywords: Alpine skiing, high-intensity interval training, anaerobic power, VO₂max.
Official title: Effects of a 12-Week High-Intensity Interval Training Program on Anaerobic Performance and Cardiorespiratory Responses in Alpine Skiers
Key Details
Gender
MALE
Age Range
16 Years - 22 Years
Study Type
INTERVENTIONAL
Enrollment
40
Start Date
2026-06-11
Completion Date
2026-10-10
Last Updated
2026-10-29
Healthy Volunteers
Yes
Conditions
Interventions
High-Intensity Interval Training (HIIT)
The experimental group performed a 12-week HIIT program twice weekly in addition to regular alpine skiing and strength training. Exercise intensity was targeted at 85-95% of individual maximum heart rate (HRmax), monitored using a Polar Team2 device. The protocol consisted of two sets, progressing from 6 to 10 repetitions per set over 12 weeks. Each repetition involved 20 seconds of high-intensity exercise followed by 10 seconds of active recovery, with one minute of active rest between sets. Exercises included slalom turn simulations, squat jumps, lateral jumps, change-of-direction drills, short-distance accelerations, and dynamic trunk stabilization. The control group continued regular training without additional HIIT. Metni kopyala
Regular Alpine Skiing and Strength Training
The participants performed regular alpine skiing training four days per week and general strength training one day per week throughout the 12-week study period. This training program was applied to both the experimental and control groups. The control group did not receive any additional high-intensity interval training (HIIT).
Locations (1)
Bitlis Eren University
Bitlis, Bitlis, Turkey (Türkiye)