Repeated Sprint Training in Normobaric Hypoxia

NCT05967767 | Completed

• 1 other identifier: Interventional
• Study Type: interventional
• Target: 24
• Locations: 1 country
• Sites: 1

Brief Summary

The aim of the current study was to examine the effects of 3-session repeated sprint training performed in a normobaric hypoxic condition with 48-hour rest intervals on sprint performance indices, arterial oxygen saturation (SpO2) and rating of perceived exertion (RPE) scores. Twenty-four moderately-trained males participated in this study voluntarily basis. This study was conducted on single-blind placebo-controlled design. Participants were divided into three groups as follows; normobaric hypoxia (3420 m; HYP), normobaric normoxia (162 m; PLA) and control group (CON). HYP and PLA groups subjected to 3 repeated sprint training session (4 set x 5 x 5 s sprints with 30 s recovery and 5 min rest between the sets) in normobaric hypoxia or normoxia condition. Pre- and pos-test were conducted 72 hours before and after the training intervention period. All the training and testing sessions performed in cycle ergometer. There were no detected significant time and condition interaction in the variables; relative peak power output (PPO), mean power output (MPO), percentage of sprint decrement score (Sdec%) and RPE observed in the scope of pre- and post-test.

Conditions

Hypoxia

Keywords

normobaric hypoxia; repeated sprint training

Outcome Measures

Primary Outcomes (3)

• Relative Peak Power Output

  Relative peak power output (as newton meter) produced during the repeated cycling sprint tests by the participant in the scope of pre and post tests were recorded and assessed via Lode Cycling Ergometer Software. The total intervention period was 11 days from pre to post test. The change evaluated from pre to post test.

  11 days

• Relative Mean Power Output

  Relative mean power output (as newton meter) produced during the repeated cycling sprint tests by the participant in the scope of pre and post tests were recorded and assessed via Lode Cycling Ergometer Software. The total intervention period was 11 days from pre to post test. The change evaluated from pre to post test.

  11 days

• Percentage of Sprint Decrement Score

  Percentage of sprint decrement score calculated via relative peak power output produced during the repeated cycling sprint tests by the each participant in the scope of pre and post tests. The used sprint decrement score formula was as the follows; "Sdec% = \[1 - (total power/ideal power)\] × 100". Total power refers to accumulated PPO over the number of sprints and ideal power is defines the achieved highest PPO over the repetitions. An increase in the obtained score means that the sprint performance decreases.The total intervention period was 11 days from pre to post test. The change evaluated from pre to post test.

  11 days

Secondary Outcomes (2)

• Arterial Oxygen Saturation

  11 days

• Rate of Perceived Exertion

  11 days

Study Arms (3)

3 Session Repeated Sprint Training in Normobaric Hypoxia

EXPERIMENTAL

Hypoxia group was exposed to normobaric hypoxia equal to 3420 m (FiO2: 13.5-13.6 %).

Device: Normobaric Hypoxia Exposure

3 Session Repeated Sprint Training in Normobaric Normoxia

SHAM COMPARATOR

Placebo group was exposed to normobaric normoxia equal to 162 m (FiO2: 20.9 %) through wearing the altitude generator mask.

Device: Normobaric Normoxia Exposure

Control group

NO INTERVENTION

The control group was subjected to only pre and post-test.

Interventions

Normobaric Hypoxia Exposure DEVICE

Hypoxia group were exposed to normobaric hypoxia equal to 3420 m (FiO2: 13.5-13.6 %).

3 Session Repeated Sprint Training in Normobaric Hypoxia

Normobaric Normoxia Exposure DEVICE

Placebo group were exposed to normobaric normoxia equal to 162 m (FiO2: 20.9 %) through wearing the altitude generator mask.

3 Session Repeated Sprint Training in Normobaric Normoxia

Eligibility Criteria

• Age: 18 Years - 22 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• non-smokers,
• male gender,
• those who do not have any chronic disease,
• do not use any medication,
• do not any training or accommodate above 1500 m altitude within the past 3 months,
• do not have any musculoskeletal injuries within the past 6 months and,
• train at least 3 days in a week.

You may not qualify if:

• Having a chronic or acute condition/disease during the intervention period
• Occurrence of acute respiratory illness or musculoskeletal injury during the intervention period
• Leaving the study voluntarily/on his own account

Sponsors & Collaborators

• Ankara University: lead

Study Sites (1)

Ankara University

Ankara, Turkey (Türkiye)

Location

MeSH Terms

Conditions

Hypoxia

Condition Hierarchy (Ancestors)

Signs and Symptoms, Respiratory; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Masking Details: In this study, blinding was provided in practice by using the simulation device for the normoxia condition.
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Assistant Professor

Model Details: single-blind placebo-controlled design

Study Record Dates

• First Submitted: July 15, 2023
• First Posted: August 1, 2023
• Study Start: November 1, 2022
• Primary Completion: November 25, 2022
• Study Completion: December 19, 2022
• Last Updated: August 1, 2023

Record last verified: 2023-07

Locations

TU (1)