Local and Systemic Oxygen Saturation During 'Death by Squats' Exercise
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Death by Airsquat.
- Who it may be relevant to
- Registry conditions: Oxygen Saturation, Fatigue, Anaerobic Threshold, Quadriceps Muscle. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Germany
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
Official title
Analysis of Local and Systemic Oxygen Saturation During Monotonous Exercise Using the Example of 'Death by Squats'
Overview
During the exercise intervention "Death by Squats", which compasses body weight squats until maximum exertion, 25-30 subjects shall be tested for heart rate, the oxygen saturation of the vastus medialis and the triceps, resting and at maximum exertion blood lactate, as well as the rate of perceived exertion on the borg scale. At the end, all should indicate their primary reason for stopping (local fatigue, systemic fatigue, time constraints, motivational deficit).
Detailed description
Subjects in this study will be measured while they are engaged in an exercise protocol until maximum exertion, each in groups of three persons. The overall duration of the study is planned from April 2023 (start of recruitment) until December 2024 (finalization of data acquisition and analysis).
Subjects are executing a CrossFit workout which is planned as follows: Every minute, participants have to perform a given number of Airsquats (bodyweight squat). The first minute starts off with 10 repetitions, the remaining time can be used as a break. In minute two, 12 repetitions have to be done, in minute three 14 repetition, and so on. The subjects stick to this protocol until maximum exertion, in other words, until they are no longer able to execute the given repetitions within the actual minute. During the workout, heart rate is tracked by a 'Polar' chest strap, and the oxygen saturation of the vastus medialis and the triceps are measured using the 'Moxy' muscle oxygen monitor. Further, at rest and at maximum exertion, a blood lactate sample is taken (EKF lactate scout). Subjects rate their perceived exertion on the borg scale after quitting and indicate their primary reason for stopping (local fatigue in legs, systemic fatigue, time constraints).
Interventions
- Diagnostic test Death by Airsquat
Increasing number of squats have to be completed every minute (EMOM principle).
Primary outcome measures
- Local and systemic SmO2 curve [Time frame: From the start of the exercise intervention until individual exhaustion (expected between 15 to 30 minutes), with SmO₂ continuously recorded during exercise and final measurement taken immediately upon exhaustion.]
Secondary outcome measures (1)
- Type of sports practiced [Time frame: Questionnaire administered within 5 minutes after test completion to assess type of sports practiced.]
Eligibility criteria
Inclusion criteria
- being moderately to severely physically active al least 2 hours/week (all types of sport are eligible)
Exclusion criteria
- akute infections, musculoskeletal injuries
- chronic cardiovascular or pulmonary diseases (in case of uncertainty, we recommend appraisal from medical personnel)
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Observational model
- Cohort
Study locations
Germany · 1 center
- University of the Bundeswehr Munich — Munich
Identifiers
NCT: NCT06884644 · DBS23