Estimation of VO2Max Using Smartphone Application

February 27, 2025 updated by: Ghada Mohamed Abd El-satar Mohamed Said, Cairo University

Estimation of VO2Max Using Smartphone Application in Elderly: Validation Study

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?

Study Overview

Status

Not yet recruiting

Conditions

Detailed Description

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.

Study Type

Observational

Enrollment (Estimated)

52

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

(52) Male and female participants will be recruited from the out clinic customers, and workers at the faculty of physical therapy Delta University at ELmansoura governorate.

Description

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.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
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.
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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
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.
at the peak of exercise (peak VO2) over the final 30 seconds of exercise

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Heart rate (HR)
Time Frame: at baseline one shot
the number of times your heart beats per minute.
at baseline one shot
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.
at baseline one shot

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Cairo University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

May 1, 2025

Primary Completion (Estimated)

September 1, 2025

Study Completion (Estimated)

December 1, 2025

Study Registration Dates

First Submitted

August 22, 2024

First Submitted That Met QC Criteria

August 26, 2024

First Posted (Actual)

August 28, 2024

Study Record Updates

Last Update Posted (Actual)

March 25, 2025

Last Update Submitted That Met QC Criteria

February 27, 2025

Last Verified

August 1, 2024

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • P.T.REC/012/004899

Drug and device information, study documents

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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