Local and Systemic Oxygen Saturation During 'Death by Squats' Exercise

Bundeswehr University Munich

Status: Enrolling

Conditions: Oxygen Saturation; Quadriceps Muscle; Fatigue; Anaerobic Threshold

Treatments: Diagnostic Test: Death by Airsquat

Study type: Observational

Funder types: Other

Identifiers

NCT06884644

DBS23

Details and patient eligibility

About

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).

Full 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).

Enrollment: 100 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

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)

Trial design

100 participants in 1 patient group

Death by Airsquat Exercise

Description:

All participants follow the exercise protocol, based on the "every minute on the minute" principle: Starting off with 10 body weight squats in the first minute (after completion, the remaining seconds can be always be used as a break). In minute two, 12 squats have to be completed. In minute three, 14 squats, and so forth. Until maximum exertion is reached and/or until the number of squats within 60 seconds can not be increased further. Every individual stops at his/her performance limit

Treatment:

Diagnostic Test: Death by Airsquat