Aging, Facial Skin, Motion Capture, Periorbital Region, Skin Movement, Vertical Jump
Conditions
Keywords
Facial skin, motion capture, aging, periorbital region, mechanical, skin movement, vertical jump
Brief summary
The periorbital region of the face is a critical area affected by aging. Motion Capture (MoCap) allows the precise measurement of the mechanical properties of skin in this region. This study will validate MoCap as a tool for quantifying these properties, comparing it to traditional reference tools, and exploring how these properties evolve with age and external treatments. It will also assess MoCap's ability to detect the effects of various treatments such as tightening products and massages. Ultimately, this research will provide a deeper understanding of skin dynamics in the periorbital region and offer insights into both medical and cosmetic applications.
Interventions
DEVICEMoCap
For each subject, the displacement of markers, the deformation of regions between markers, and the evolution of angles formed by the markers during facial expressions and vertical movements will be analyzed with MoCap. These will be compared between the two age groups (18-33 years vs. 50-65 years) using a MANOVA model. The reference values for marker displacement will be defined by the interval between the 2.5% and 97.5% percentiles of the values for each marker. If the distribution is Gaussian, the percentiles will be derived from the standard normal distribution; otherwise, the non-parametric method will be used. The intervention will be Interventions : * Recruitment of healthy and pathological subjects. * Full-face and macro images of the periorbital region * Measurement of periorbital skin properties using MoCap and standard reference tools. * Application of a tightening product (aloe vera) and periorbital massage. * Measurement of skin response to a vertical jump.
Sponsors
Centre Hospitalier Universitaire, Amiens
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes
Inclusion criteria
* Female participants * Caucasian, Fitzpatrick skin types I-III * BMI between 18.5 and 27, healthy participants * Aged 18 to 65 years (inclusive) * Not under guardianship or curatorship * Informed written consent * Social security affiliation * Non-smokers for at least 5 years * No excessive UV exposure (artificial or natural) in the last 3 weeks prior to the study or during the study
Exclusion criteria
* Severe skin disorders preventing the application of electrodes or photo-reflective markers * Neurovascular history affecting the face * Ongoing treatments influencing facial tissues (e.g., corticosteroids) * Current sleep disorders * Psychiatric conditions or social interaction impairments * Inner ear or balance disorders * Osteoporosis, recent fractures, or fragile bone conditions * Pregnant or breastfeeding women * Under guardianship, curatorship, or legal protection
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| maximum displacement (in millimeters) of each marker placed on the face | day 1 | maximum displacement (in millimeters) of each marker placed on the face during standardized movements of the periorbital region |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Coefficient of variation of the maximum displacement amplitudes measured during repeated tests for the same movement. | day 1 | — |
| The correlation coefficient between dynamic MoCap measurements and static measurements obtained from reference tools. | day 1 | The correlation coefficient between dynamic MoCap measurements and static measurements obtained from reference tools. |
| The difference in the mean maximum displacement amplitudes (in millimeters) between different age groups | day 1 | The difference in the mean maximum displacement amplitudes (in millimeters) between different age groups |
| The difference in the mean maximum displacement amplitudes (in millimeters) before and after performing a periorbital massage | day 1 | The difference in the mean maximum displacement amplitudes (in millimeters) before and after performing a periorbital massage |
| The maximum mean displacement amplitudes (in millimeters) during a mechanical solicitation (a standardized vertical jump). | day 1 | The maximum mean displacement amplitudes (in millimeters) during a mechanical solicitation (a standardized vertical jump). |
| The difference in the mean maximum displacement amplitudes (in millimeters) before and after applying a tightening product (aloe vera). | day 1 | The difference in the mean maximum displacement amplitudes (in millimeters) before and after applying a tightening product (aloe vera). |
Countries
France
Outcome results
None listed