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Completed

NCT Number: NCT07589998

Comparison of Smartphone-Based 3D Body Measurements With Traditional Anthropometry and 4D Stereophotogrammetry

This study investigates the accuracy, validity and reliability of smartphone-based 3D body scanning applications compared with traditional anthropometric measurements and a 4D stereophotogrammetry system.

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Key information

Conditions

Anthropometry Body Composition Smartphone Three Dimension

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

University of Antwerp

Antwerp, Belgium

About this study

This study evaluates how accurately smartphone-based 3D body scanning applications can measure the human body compared with traditional anthropometric measurements and a 4D stereophotogrammetry system. Thirty-five healthy adults undergo body measurements using three methods: conventional tape and stadiometer measurements, smartphone-based 3D scanning applications (3D Measure Me and MeThreeSixty), and a 4D stereophotogrammetry scan used as a reference method.

The study examines the reliability, validity, and accuracy of these technologies by comparing measurements such as body lengths, circumferences, and body proportions across methods. The goal is to determine whether smartphone-based body scanning applications can provide clinically useful and accessible alternatives to traditional anthropometric measurements in healthcare and rehabilitation settings.

Who can participate

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Human adults
  • iPhone
  • Samsung
  • Smartphone
  • 4D stereophotogrammetry
  • Traditional anthropometrics
  • Whole body
  • Shape
  • Avatar

Exclusion criteria

  • Children
  • Animals
  • X-ray
  • MRI
  • CT
  • Surgery
  • Dental
  • Geographical mapping
  • Non-digital human
  • Body parts
  • Skeleton body

Treatment and study plan

Smartphone-Based 3D Body Scanning

Diagnostic Test

Participants undergo anthropometric assessment using three different measurement methods: traditional anthropometric measurements, smartphone-based 3D body scanning applications, and a 4D stereophotogrammetry system. Traditional measurements include the use of a measuring tape, stadiometer, and weight scale. Smartphone-based measurements are performed using the 3D Measure Me and MeThreeSixty applications on a smartphone device. The 4D stereophotogrammetry system is used as the reference scanning method to generate a full-body digital avatar. All measurements are collected during a single study visit to evaluate the validity, reliability, and accuracy of the different body measurement techniques in healthy adults.

Primary outcomes

  1. Waist height

    Time frame: 10 and 16 February 2026

    Length waist to floor (SIAS) in mm

  2. Waist to knee height

    Time frame: 10 and 16 February 2026

    Vertical length from waist to middle of knee cap in mm

  3. Knee height

    Time frame: 10 and 16 February 2026

    Length from the top of the knee to the bottom of the foot in mm

  4. Outer arm in

    Time frame: 10 and 16 February 2026

    Arm length from bone at top edge of shoulder to elbow to wrist just below wrist bone in mm

  5. Foot length

    Time frame: 10 and 16 February

    Length from back of heel to tip of longest toe in mm

  6. height

    Time frame: 10 and 16 February 2026

    Height from top of head to floor in mm

  7. Neck girth

    Time frame: 10 and 16 February 2026

    Circumference around neck over Adams apple following natural curve in mm

  8. Hip girth

    Time frame: 10 and 16 February 2026

    Circumference at widest point of bum from side view in mm

  9. Belly girth

    Time frame: 10 and 16 February 2026

    Circumference at belly button in mm

  10. Bust girth

    Time frame: 10 and 16 February 2026

    Circumference around chest beneath armpits and in line with nipples in mm

  11. Under bust girth

    Time frame: 10 and 16 February 2026

    Circumference just under bust in mm

  12. Back arm pit contour

    Time frame: 10 and 16 February 2026

    Distance armpit to armpit straight across the back without going into the armpit in mm

  13. Forearm girth

    Time frame: 10 and 16 February 2026

    Circumference at largest point on forearm in mm

  14. Wrist girth

    Time frame: 10 and 16 February 2026

    Circumference just below wrist bone in mm

  15. Thigh girth

    Time frame: 10 and 16 February 2026

    Circumference measurement taken 1cm below the gluteal line or fold in mm

  16. Knee girth

    Time frame: 10 and 16 February 2026

    Circumference around knee cap at the widest point in mm

  17. Ankle girth

    Time frame: 10 and 16 February 2026

    Circumference at the narrowest point of the ankle in mm

  18. Upper arm girth

    Time frame: 10 and 16 February 2026

    Bicep circumference at upper arm mid-point in mm

Secondary outcomes

  1. Type of clothing

    Time frame: 10 and 16 February 2026

    Loose or tight

  2. Skin Colour

    Time frame: 10 and 16 February 2026

    light, medium or dark

  3. Movement

    Time frame: 10 and 16 February 2026

    no movement or slight movement

  4. Belly height

    Time frame: 10 and 16 February 2026

    Vertical distance from waist to abdomen in mm

  5. Bust height

    Time frame: 10 and 16 February 2026

    Distance from base of neck down to the centre of the fullest part of bust in mm

  6. Armspan

    Time frame: 10 and 16 February 2026

    Lenght from one end of a person's arms (measured at the middle fingertips) to the other when arms raised parallel to the ground at shoulder height at 90° angle in mm

  7. Head girth

    Time frame: 10 and 16 February 2026

    Circumference from slightly above eyebrows above the ears and over the occipital prominence and the back of the head (with a bathing cap) in mm

  8. Bust width

    Time frame: 10 and 16 February 2026

    Length from the left armpit to the right armpit across the front in a straight line over the upper part and not through the centre in mm

Sponsors and collaborators

Lead sponsor

Femke Van Orden

Other

Registry information

Official study title

Comparison of Smartphone-Based 3D Body Measurements With Traditional Anthropometry and 4D Stereophotogrammetry: Reliability, Validity, and Accuracy in Healthy Adults

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
May 15, 2026
Registry last updated
May 19, 2026

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.

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