NCT Number: NCT06575608
Estimation of VO2Max Using Smartphone Application
The aim of this observational study Is to examine the validity of the Smartphone application (VO2max calculator) in calculating VO2max in elderly population.
Research hypotheses:
this study will test the following null hypothesis: (Vo2max calculator) application will not have criterion validity in estimating VO2max values in the elderly population.
Research question:
Is the Smartphone application (VO2max calculator) considered a valid tool for estimating accurate values of VO2max in the elderly population in comparison to the golden standard method?
Trial opening soon.
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Conditions
Age range
65 year–75 year
Sex eligibility
All sexes
Study type
Observational
About this study
Although maximal oxygen consumption (VO2max) is growing in evidence as a powerful indicator of several health conditions it's rarely used in clinical practice due to the high expense, requirement of specialized equipment, and related risks of maximal exertion. So, we aim to develop a simpler method for estimating VO2max using modern smartphone technologies.
Method: participants of this study will be divided into 2 equal groups. The first group will perform a gold standard treadmill-based VO2max measurement and the other group will perform a smartphone based 1-mile walk test for VO2max estimation.
Who can participate
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
- Elderly subjects aged from (65 to 75) years.
- BMI 18.5-29.9 kg/m2
- Answer (NO) to all of the questions in the Physical activity readiness questionnaire (PAR-Q)
- Do not have any absolute or relative contraindications for exercise testing according to the American Heart Association (AHA) statement.
Exclusion criteria
- Recent surgical conditions.
- Skeletal deformities.
- Blood pressure regulating medication intake.
- Any respiratory disorders.
- Back, hip, knee or ankle pain within last month.
- Any neurological or psychiatric conditions.
- Implanted pacemaker.
- Anemic patients.
Treatment and study plan
Primary outcomes
-
maximum oxygen consumption (VO2MAX)
Time frame: at the peak of exercise (peak VO2) over the final 30 seconds of exercise
The greatest amount of oxygen a person can take in from inspired air while performing dynamic exercise involving a large part of total muscle mass.
Secondary outcomes
-
Heart rate (HR)
Time frame: at baseline one shot
the number of times your heart beats per minute.
-
The Borg rating of perceived exertion (RPE) scale
Time frame: at baseline one shot
It is a subjective scale for estimating effort and exertion, breathlessness, and fatigue during physical work.
Study contacts
Contact information is provided by the study sponsor or research team.
Sponsors and collaborators
Lead sponsor
Cairo University
Other
Registry information
Official study title
Estimation of VO2Max Using Smartphone Application in Elderly: Validation Study
Important dates
- Study start
- 2025
- Primary completion
- 2025
- Study completion
- 2025
- First posted
- Aug 28, 2024
- Registry last updated
- Mar 3, 2025
OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.
View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.