The purpose of the present study is to observe the effect on the blood flow of the forearm skin by rubbing massage.
　Healthy adults volunteered as experimental subjects. The forearm blood flow war measured by using Ultrasonic Flow Meter (Nihon Kohden, Tokyo, MUV-2100).
　Results obtained in this study are as follows;
　1. Blood velocity at rest is 20-30 cm/s.
　2. Average values, and standard deviation for blood velocity at rest were different according to the thermal environments. Data acquired here are:
　　1) 20°C 20.8±2.62 (cm/s)
　　2) 25°C 23.6±3.78 (cm/s)
　　3) 30°C 26.8±3.37 (cm/s)
　3. We may conclude at this point that the effect of thermal environment on blood flow is that, hot thermal environment is more advantageous than cold thermal environment and long rubbing massage of skin is more advantageous than short rubbing massage of skin.

DESCENTE SPORTS SCIENCE Vol.7/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE