仰臥位安静時，下肢への部位別圧迫が腓腹筋血流動態及び皮膚血流量，皮膚温に与える影響を明らかにし，圧力を利用した衣服設計の基礎とすることを目的として検討を行った.被験者は健康な成人女性5名，気温29±0.5℃，湿度50±5％RHの人工気候室で，測定開始5分後に，カフなし，または大腿最大囲，大腿中央囲，膝上囲，膝囲，下腿最大囲のいずれかを血圧計用カフを用いて10，15，20mmHg各強度で15分間圧迫を加えた.測定項目は，腓腹筋血流動態（組織酸素化血液量：OXY Hb，組織脱酸素化血液量：deOXY Hb，組織全血液量：TOTAL Hb，組織酸素飽和度：StO2），下腿部•右足母指の皮膚血流量及び皮膚温，圧迫感，むくみ感である.その結果，下肢の部位別圧迫で，deOXY Hb， TOTAL Hbは増加，StO_2は減少し，20mmHg強度で有意差が認められた.deOXY Hbは，膝囲及び大腿最大囲圧迫時に最も増加し，最も影響が少なかったのは膝上囲圧迫時であった.また，膝囲及び大腿最大囲を15, 20mmHgで圧迫するとdeOXY Hbは有意に増加した.下腿部皮膚血流量は，15, 20mmHg強度圧迫で有意に減少し，下腿部皮膚温は上昇が抑制された.膝囲圧迫時にむくみを最も強く感じ，大腿最大囲圧迫時に最も感じにくいことが示された.膝囲及び大腿最大囲は，圧力を利用した衣服設計時に十分考慮すべき部位であることが示唆された.%The purpose of this study was to clarify the effect of local clothing pressure to the lower extremities on the hemoglobin concentration in the calf muscle, the skin blood flow and the skin temperature in the spine position for clothes design using pressure. Five healthy women laid on a bed and had applied cuff pressure to their upper thighs, middle thighs, above the knees, knees, and legs at 10, 15, 20 mmHg respectively for 15 minutes or without cuff in the artificial climate chamber controlled at 29±0.5℃ and 50±5%R.H. The calf hemoglobin concentration (Oxygenated blood volume in tissue: OXY Hb， Deoxygenated blood volume in tissue: deOXY Hb, Total blood volume in tissue: TOTAL Hb, Oxygen Saturation: StO_2), skin blood flow and skin temperature on the leg and the toe as well as pressure sensation and swelling sensation were measured. The results are as follows: deOXY Hb and TOTAL Hb increased and StO_2 decreased with the local cuff pressure on the extremities that were significantly changed at 20 mmHg. The increase in deOXY Hb was larger when applied to the knees and the upper thighs than applied above the knees. deOXY Hb significantly increased when applied to the knees and the upper thighs at 15 and 20 mmHg. The leg skin blood flow significantly decreased and rise in the leg skin temperature was suppressed with the application of 15 and 20 mmHg cuff pressure. Swelling sensation was stronger with pressure to the knees than to the upper thighs. These results suggested that particular attention should be paid to the pressure at knee and upper thigh for design of pressure clothes.
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