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

NCT06884644 | Recruiting DMC FDA Device

• 1 other identifier: DBS23
• Study Type: observational
• Target: 100
• Locations: 1 country
• Sites: 1

Brief Summary

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).

Conditions

Oxygen Saturation; Fatigue; Anaerobic Threshold; Quadriceps Muscle

Outcome Measures

Primary Outcomes (1)

• Local and systemic SmO2 curve

  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 Outcomes (1)

• Type of sports practiced

  Questionnaire administered within 5 minutes after test completion to assess type of sports practiced.

Other Outcomes (2)

• Anthropometric parameters will be assessed

  Anthropometric measurements will be taken immediately after the completion of the exercise intervention (expected between 15 to 30 minutes after the start of exercise).

• Blood lactate concentration at rest and post-exercise

  At rest (prior to exercise) and immediately upon individual exhaustion (expected between 15 to 30 minutes after the start of exercise). Additional post-exercise measurements at 2, 5, and 10 minutes if applicable.

Study Arms (1)

Death by Airsquat Exercise

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

Diagnostic Test: Death by Airsquat

Interventions

Death by Airsquat DIAGNOSTIC_TEST

Increasing number of squats have to be completed every minute (EMOM principle).

Death by Airsquat Exercise

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Male and female participants of 18 years and older, that are performing a CrossFit class with the EMOM workout "Death by Airsquat".

You may qualify if:

• being moderately to severely physically active al least 2 hours/week (all types of sport are eligible)

You may not qualify if:

• akute infections, musculoskeletal injuries
• chronic cardiovascular or pulmonary diseases (in case of uncertainty, we recommend appraisal from medical personnel)

Sponsors & Collaborators

• Bundeswehr University Munich: lead

Study Sites (1)

University of the Bundeswehr Munich

Munich, Bavaria, 85577, Germany

RECRUITING

MeSH Terms

Conditions

Fatigue

Condition Hierarchy (Ancestors)

Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Central Study Contacts

Annette Schmidt, Prof

CONTACT

+49 89 6004 4412; annette.schmidt@unibw.de

Jennifer Schlie, M.Sc.

CONTACT

+49 89 6004 4774; jennifer.schlie@unibw.de

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Target Duration: 24 Months
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Prof. Dr. Annette Schmidt

Study Record Dates

• First Submitted: February 8, 2025
• First Posted: March 19, 2025
• Study Start: February 8, 2025
• Primary Completion: December 1, 2025
• Study Completion: December 1, 2025
• Last Updated: March 19, 2025

Record last verified: 2025-03

Locations

DE (1)