Michiyo Yamamoto
Hokkaido University of Science, Japan
Title: Comparison of Stratum Corneum Hydration with Temperature and Air Humidity
Biography
Biography: Michiyo Yamamoto
Abstract
The purpose of this study was to clarify the changes in the stratum corneum hydration compared to temperature and air humidity.The subjects of this research were fifty-eight older adults. The researches were conducted in March and May of 2017. A self-administered questionnaire was consisted demographic data, frequency of taking a bath, nutritional status (MNA® SF) and condition of xerosis cutis. The stratum corneum hydration was measured on the center forearm by Mobile Moisture HP10-N®. Data was analyzed for gender, age, frequency of taking a bath and nutritional status to examine differences in stratum corneum hydration. Later differences of the stratum corneum hydration data obtained in March and May were examined.The results of this research displayed thirty-two female subjects (55.2%), thirty-five subjects under seventy-five years old (60.3%), twenty-eight subjects who took a bath every day or almost every day (48.3%), twelve subjects at risk of malnutrition (20.7%) and eight subjects with rough skin (13.8%). There was no significant difference recognized in the stratum corneum hydration regarding gender, age, frequency of taking a bath or nutritional status. At the time of research in March and May, the temperature was 24.9±0.4 ℃ and 24.4±0.4 ℃ (p>0.001), respectively, and the air humidity was 29.8±1.3% and 47.3±3.6% (p>0.001), respectively. The stratum corneum hydration in March and May was 41.6±8.5 (minimum value, 22.0; maximum value, 59.7) and 50.3±9.0 (minimum value, 34.0; maximum value, 72.0) (p>0.001) respectively.The stratum corneum hydration was significantly low in low humid environments.