Estimation of VO2Max Using Smartphone Application

NCT ID: NCT06575608

Last Updated: 2025-03-03

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

NOT_YET_RECRUITING

Total Enrollment

52 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-05-31

Study Completion Date

2025-12-31

Brief Summary

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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?

Detailed Description

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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.

Conditions

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Assessmet of VO2max in Elderly

Study Design

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Observational Model Type

OTHER

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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direct VO2max test group

Group A (n-26) will perform a direct VO2max test on the treadmill and vo2max will be calculated by the cardiopulmonary exercise testing (CPX) device Spirometry Medisoft Ergocart professional.

No interventions assigned to this group

1-mile walk test group

Group B (n-26) will perform the 1 mile walk test and VO2 max will be calculated by the smartphone application VO2max calculator

No interventions assigned to this group

Eligibility Criteria

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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.
Minimum Eligible Age

65 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Cairo University

OTHER

Sponsor Role lead

Responsible Party

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Ghada Mohamed Abd El-satar Mohamed Said

principal investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Central Contacts

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Ghada said, Bachelor

Role: CONTACT

+201148571986

Other Identifiers

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P.T.REC/012/004899

Identifier Type: -

Identifier Source: org_study_id

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