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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| subjects aged 18-33 years | Experimental |
| |
| subjects aged 50-65 years | Experimental |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| MoCap | Device | 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 :
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| Measure | Description | Time Frame |
|---|---|---|
| maximum displacement (in millimeters) of each marker placed on the face | maximum displacement (in millimeters) of each marker placed on the face during standardized movements of the periorbital region | day 1 |
| Measure | Description | Time Frame |
|---|---|---|
| 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. | The correlation coefficient between dynamic MoCap measurements and static measurements obtained from reference tools. |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| CHRU Amiens | Amiens | 80480 | France |
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| 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) between different age groups | day 1 |
| The difference in the mean maximum displacement amplitudes (in millimeters) before and after performing a periorbital massage | The difference in the mean maximum displacement amplitudes (in millimeters) before and after performing a periorbital massage | day 1 |
| The maximum mean displacement amplitudes (in millimeters) during a mechanical solicitation (a standardized vertical jump). | The maximum mean displacement amplitudes (in millimeters) during a mechanical solicitation (a standardized vertical jump). | day 1 |
| The difference in the mean maximum displacement amplitudes (in millimeters) before and after applying a tightening product (aloe vera). | The difference in the mean maximum displacement amplitudes (in millimeters) before and after applying a tightening product (aloe vera). | day 1 |