• 대한통합의학회지
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• 제11권1호
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• pp.79-86
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• 2023

Purpose : Aging is reflected on the face of women due to the depletion of collagen and hydration in the facial skin overtime. This study investigated the effect of multiple SONO^® ultrasound for a 4-week period on the skin health by measuring the skin elasticity and deeper skin elasticity in the tested women subjects. Methods : Twenty healthy women were recruited for this experiment. All the participants applied multiple ultrasound device (SONO^®) during this experiment. The SONO^® device was set to ANTI-AGING function and five power steps such as 1, 3, 10 and 17 MHz were used during this experiment, and directly contacted with the facial skin. Specifically, the probe was contacted with the entire face except for the nose and eyes for 10 min on each side of the face every day and repeated for 4 weeks. The skin elasticity and the elasticity of deeper skin were measured at three times (0, 2, 4 weeks) using a Ballistometer and dermal torque meter, respectively. The one way repeated ANOVA was used to compare the skin elasticity and the elasticity of deeper skin among three times (0, 2, 4 weeks). Results : The skin elasticity (p<.05) and elasticity of deeper skin (p<.05) were significantly increased at 2 weeks and 4 weeks of intervention compared to that at 0 weeks. For the skin elasticity, there was no significant difference between 2 and 4 weeks of intervention (p>.05). For the elasticity of deeper skin, it increased significantly at 4 weeks compared to 2 weeks of intervention (p<.05). Conclusion : These findings suggest that applying multiple SONO^® ultrasound to the facial skin of healthy women for 4 weeks, can increase the skin elasticity and elasticity of deeper skin by supporting epidermal hydration and dermal collagen production.

• 한국한의학연구원논문집
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• 제16권3호
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• pp.135-140
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• 2010

The usefulness of constitutional diagnoses based on skin measurements has been established in oriental medicine. According to Sasang constitutional medicine, humans can be distinguished based on properties of skin's friction, thickness and elasticity. To quantify and standardize skin diagnosis, the present study designed an equipment for measuring skin elasticity of hand. But there were some noises in measuring skin elasticity such as measurement method, environment, operator and conditions of patient. So we considered a six sigma project for reducing the measurement errors. The project was followed to discipline process of five macro phases: Define, Measure, Analyze, Improve and Control(DMAIC). So, we could find the major factors which should be controled for stabilizing measurement system and we revised the SOP(Standard Operating Procedure) of the skin elasticity measurement.

• 대한한방부인과학회지
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• 제25권4호
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• pp.46-55
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• 2012

Objectives: It is well known that genetic factors and environmental factors play major role in aging skin. In general, son and daughter take after their parents in appearance. But comparability of skin properties in Korean family has not been well estimated. So we evaluated the correlation of skin properties in Korean mother-daughter pairs. Methods: 10 couples of mother and daughter pair(n=20) participate in this study. Mothers and daughters were aged $50.6{\pm}2.459$ and $23.8{\pm}2.15$ years, respectively. Skin moisture, sebum, skin color and elasticity is measured using non-invasive method : Corneometer CM825, Sebumeter(MPA580), Mexameter MX18, Cutometer MPA580. Statistical analysis program we used is Minitab 14 Korea. Results: The Skin moisture of mother group was significantly higher than daughter group. And skin elasticity(R2) of the daughter group was significantly higher than mother group. In the results of correlation analysis between mother and daughter pairs, skin elasticity(R2) had high positive correlation(r=0.729, p=0.026). But skin moisture, sebum, melanin index, erythema index and skin elasticity(R5) did not be confirmed a significant correlation. Conclusions: Skin elasticity(R2) is the only factor that showed high positive correlation significantly in mother and daughter pairs. Mother and daughter share the genetic factors and environmental factors that influence skin aging. So, mother's aging pattern will be a good guide for anti-aging of daughters.

• 대한두개안면성형외과학회지
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• 제20권3호
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• pp.158-163
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• 2019

Background: Age-related changes in facial skin is a major concern in women. This study aimed to objectively evaluate normal skin elasticity and age-related differences in the faces of East Asian women. There are no standard values for data related to normal skin on East Asian women. Methods: We studied 129 healthy East Asian women without a history of cosmetic procedures or surgeries. Skin elasticity was assessed at the cheek and lower eyelid points, which were assessed on both the right and left sides of the face. Results: The age of the subjects showed significant negative correlations with the R2 and R7 parameters, which represent skin elasticity after deformation. Conclusion: We therefore concluded that the primary decrease in skin elasticity in East Asian women occurs in the midface region.

• Journal of Nutrition and Health
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• 제43권3호
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• pp.233-245
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• 2010

The purpose of this study was to investigate the effects of dietary habits and nutrient intakes on skin condition of female university students. The subjects were 95 female university students in Daegu. This study examined anthropometric measurements, dietary intake, food intake habits and skin condition (moisture, elasticity, sebum (U-zone, T-zone), pores, evenness and melanin pigmentation. The subjects in this study had an average age of 21.4, an average height and weight of 161.2 cm and 52.9 kg, respectively, and the average body mass index (BMI) was 20.3 $kg/m^2$. The means of skin elasticity, pores, evenness, and melanin pigmentation were within the normal range of women in their 20s and the skin moisture state was slightly lower than the normal range, which showed a dry tendency. The sebum in the U-zone and the T-zone was lower than the standard values, which showed less secretion in both areas. The subjects with high nut intake showed a better skin pore state (p < 0.05). Those with a high intake of instant foods showed a sig-nificantly low skin moisture and a significantly higher sebum rate (p < 0.05). The group with high skin elasticity and the group with less melanin pigmentation showed a significantly low animal protein intake (p < 0.05). The group with high skin elasticity also showed a significantly higher vitamin A and niacin intakes as well (p < 0.05). The group with high skin evenness showed a significantly lower animal lipid intake and a significantly higher vitamin E intake (p < 0.05). In addition, those with high skin elasticity and evenness as well as low melanin pigmentation showed a tendency of high intake of antioxidant vitamins, such as vitamin A, carotene, vitamin C or vitamin E. In summary, a moderate intake of plant-based products and also the antioxidant vitamins within such products seems to have a beneficial effect on maintaining a healthy and good skin condition.

• 한국멀티미디어학회논문지
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• 제25권9호
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• pp.1307-1315
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• 2022

In this paper, we proposed and developed a new portable skin elasticity measuring device based on the indentation method using piezoelectric effect. The proposed device is designed to minimize the uncertainty caused by the layer structure of the skin when measuring the elasticity of the skin. And, we developed a piezoelectric-based thin-film pressure sensor that can measure quantitatively and quickly during repeated measurement as a device sensor. To confirm the effectiveness of the proposed measuring device, it was compared with the experimental results of the conventional measuring devices under the same experimental conditions, and statistical correlation analysis was performed between the experimental data of the proposed measuring device and the experimental data of the conventional measuring devices. As a result of the correlation analysis, it was confirmed that the proposed measuring device had a high correlation with the conventional measuring devices. Therefore, it was confirmed that the proposed skin elasticity measuring device was effective.

• 대한화장품학회지
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• 제30권3호
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• pp.385-388
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• 2004

최근에 천연성분의 화장품 응용에 대한 관심이 높아지고 식물에 함유하고 있는 피토에스트로겐(Phytoestrogen)의 항노화 물질 연구가 중요해지고 있다. 태국 식물 Pueraria mirifica 추출물을 $4\%$ 함유한 크림제제(PM 크림)를 추출물 성분이 제외된 플라시보 크림과 비교하여 총 30명 여성을 대상으로 16주간 임상시험을 수행하였다. 피부 모사판을 제작하여 주름 측정을 하였고, 피부 탄력과 보습을 기기 평가하였다. 특히 피부 탄력도는 placebo 크림 사용군 대비 추출물 함유 크림 사용군이 통계적으로 유의하게 탄력도가 증가하였다. 주름이나 보습평가는 특이할 만한 결과를 나타내지는 못했다. Pueraria mirifiaca는 피부 탄력 개선을 주는 항노화 화장품 개발에 응용될 수 있을 것이라 기대된다.

• 대한화장품학회지
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• 제44권4호
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• pp.455-463
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• 2018

피부의 탄성은 주로 콜라겐, 탄력섬유 등이 풍부한 진피의 영향을 받는다. 하지만, 피부의 가장 바깥층인 각질층의 변화가 피부의 기계적인 특성에 어떠한 영향을 미치는지에 대해선 아직 명확하게 밝혀지지 않고 있다. 이에 본 연구에서는 새롭게 디자인한 시험방법을 통해 피부 깊이별 탄성 특성과 수화과정을 통한 각질층 변화가 피부 탄성 특성에 어떻게 영향을 주는지를 알아보았다. 또한 이 방법을 이용해 얼굴피부와 하박내측 피부의 특성을 비교 평가하였다. 25-40세 연령의 건강한 성인 10명을 대상으로, 피부 깊이별 탄성 특성을 연구하기 위해 $Cutometer^{(R)}$의 음압을 다양하게 설정하여 얼굴피부와 하박내측 피부의 탄성 특성을 측정하여 비교 평가하였다. 음압은 100, 200, 300, 450 mbar로 구분하여 측정하였다. 또한 충분한 수화과정을 통해 각질층의 변화를 유도하고, 다양한 음압 조건에서 피부 탄성 특성을 측정하였다. 그 결과, 음압 조건을 달리함에 따라 피부 깊이에 따른 탄성 특성 측정이 가능함을 확인하였다. 그리고 하박내측 피부의 R7 값은 모든 음압조건에서 얼굴피부보다 통계적으로 유의하게 높았다(p < 0.05). 또한 수화과정에 의한 각질층의 변화는 피부탄성 특성에 영향을 줄 수 있음을 확인하였다. 특히 얼굴피부의 R7 값은 300 mbar 음압조건에서 수화전 상태의 피부에 비해 통계적으로 유의하게 변화하였다(p < 0.05). 그리고 전체적으로 얼굴피부가 하박내측 피부보다 수화과정에 더 크게 영향을 받고 있음을 알 수 있었다. 이러한 결과는 다양한 음압조건과 피부 수화 과정을 활용한다면, 각질층 및 표피층의 변화를 고려한 피부탄력특성을 평가할 수 있는 유용한 시험법이 될 것으로 사료된다.

• 한국한의학연구원논문집
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• 제18권3호
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• pp.119-126
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• 2012

1. Objectives Sasang constitutional medicine is unique in Korean traditional medicine. It diagnoses and treats patients based on his/her Sasang constitution (SC). Skin properties have been used as an effective diagnostic component in the classification of SC types in clinics. In this paper, we investigated the SC-based health relevance of skin elasticity and wrinkle properties. 2. Methods The skin elasticity and wrinkle of forearm and dorsal hand were measured in 299 elderly female subjects. To determine the subject's Sasang constitution, we adopted the classification results from a newly developed SC diagnostic tool. The health states of the subjects were scored by two Korean traditional medical doctors, by whom each subject was categorized either into the healthy state or the unhealthy state. 3. Results As a result, the elasticity hysteresis of forearm (E_HYS), the visco-elasticity (VE_MEAN), and the wrinkle frequency energy of backhand (W_HAND) showed significant differences between Taeum-in group and Soeum-in group. In case of the Soeum-in on unhealthy state, VE_MEAN was decreased significantly (p<.05). W_HAND and W_ARM_H of the healthy Taeum-in were less than those of the unhealthy Taem-in. 4. Conclusions In this study we showed that, for an elderly female population, skin elasticity and viscosity were significantly different not only between each SC type but also between healthy group and unhealthy group in each constitution. In particular, Soeum-in subjects were inferred to be superior in retaining skin softness when they were healthy, and Taeum-in subjects were easy to lose their firmness of skin surface when they became unhealthy.

• Journal of Acupuncture Research
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• 제28권5호
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• pp.111-119
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• 2011

Objective : Facial embedding therapy is a korean medical treatment technique for face lifting. The authors aimed to evaluate the effects of embedding therapy on facial skin elasticity and moisture content. This paper was written to provide objective datas about Facial embedding therapy. Results : Mean elasticity of both $ST_3$ increased after facial embedding therapy. skin elasticity of both $ST_3$ showed significant improvement. Mean moisture content of both $ST_3$ increased after facial embedding therapy. skin moisture content of both $ST_3$ showed significant improvement. Conclusion : Mean elasticity and moisture content of both $ST_3$ increased after facial embedding therapy. Facial embedding therapy may be an effictive treatment for improving elasticity and moisture content of skin in clinic.