Effects of postprandial electrical stimulation for skeletal muscles on blood glucose levels and insulin secretion

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  • Mina Kawahigashi
    Student,Doctorate Course in Food Sciences ,Graduate School of Human Life Siences ,Tokushima Bunri University
  • Tomoki　Aiba
    Student,Doctorate Course in Food Sciences ,Graduate School of Human Life Siences ,Tokushima Bunri University
  • Tomoki Ebisudani
    Student,Doctorate Course in Food Sciences ,Graduate School of Human Life Siences ,Tokushima Bunri University Ogawa Hospital Rehabilitation Division
  • Tomoharu Kawano
    Student,Doctorate Course in Food Sciences ,Graduate School of Human Life Siences ,Tokushima Bunri University
  • Yukio Yanagisawa
    Faculty of Health and Welfare Faculty of Physical Therapy,Tokushima Bunri University
  • Seiishi Hashida
    Health Science　Institute,Tokushima Bunri University

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Other Title
  • 食後の下肢筋肉への電気刺激が血糖値およびインスリン分泌に及ぼす影響
  • ショクゴ ノ カシ キンニク エ ノ デンキ シゲキ ガ ケットウチ オヨビ インスリン ブンピ ニ オヨボス エイキョウ

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<p>　Background: Postprandial exercise is recommended to improve postprandial hyperglycemia. However, there are many individuals with limited ability to exercise because they are bedridden or have orthopedic problems. Electrical stimulation therapy is a new treatment used to induce muscle exercise as part of rehabilitation therapy. Recently, electrical stimulation has been reported to have a blood glucose lowering effect. This study aimed to compare the effect of treadmill exercise （TM） to that of postprandial electrical muscle stimulation （EMS） for skeletal muscle on blood glucose levels and insulin secretion. Subjects and Methods: The subjects were 9 healthy females （age: 20.8±1.3yr., BMI: 22.5±3.2kg/m2）. Blood glucose and insulin after an oral glucose （75g） tolerance test （OGTT） were examined. EMS was performed at 3 intensity levels （50%, 75%, 100% stimulation intensity）. TM was performed at 50% Heart Rate Reserve （HRR） intensity. EMS and TM were carried out from between 10 minutes to 30 minutes after glucose ingestion. Blood glucose and insulin were measured every 30 minutes after OGTT. Heart rate, lactate concentration, VO2, METS and respiratory quotient （RQ） were also measured. Results: Heart rate, VO2 and METS significantly increased as the stimulation intensity of EMS increased （p<0.01）. On the other hand, VO2 during TM was about 3 times greater than during 100%EMS. Lactate concentrations significantly increased in 100%EMS and TM （p<0.05）. RQ tended to increase during EMS and TM, and decreased after the stimulation/exercise. Blood glucose in 75%EMS and TM significantly decreased at 30 min. after glucose ingestion. Area under the curve （AUC） of blood glucose tended to decrease in all tests except 100%EMS. Blood insulin tended to decrease in all tests at 30 and 60 min. after glucose ingestion. AUC of blood insulin tended to decrease in all tests. Conclusions: The effects of EMS on carbohydrate and lipid metabolism were similar to TM. EMS was shown to have the same suppressive effect on postprandial hyperglycemia and insulin secretion as TM, but at lower exercise intensity than TM. Therefore, EMS has potential application for the management of postprandial blood glucose in individuals with limited ability to exercise. </p>

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