Duration of Exercise as a Key Determinant of Improvement in Insulin Sensitivity in Type 2 Diabetes Patients

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著者

    • LI Jing
    • Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Disease Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University
    • ZHANG Wen
    • Department of Rehabilitation and Sports Medicine, Tianjin Medical University
    • GUO Qi
    • Department of Rehabilitation and Sports Medicine, Tianjin Medical University
    • LIU Xiaoxuan
    • Department of Rehabilitation and Sports Medicine, Tianjin Medical University
    • ZHANG Qiumei
    • Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Disease Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University
    • DONG Rongna
    • Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Disease Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University
    • DOU Hongmei
    • Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Disease Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University
    • SHI Jianying
    • Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Disease Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University
    • WANG Jiazhong
    • Department of Rehabilitation and Sports Medicine, Tianjin Medical University
    • YU Demin
    • Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Disease Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University

抄録

Exercise duration and intensity are important parameters in exercise prescription and play a major role in improving insulin sensitivity (including transient and persistent improvement effects following cessation of training) in patients with type 2 diabetes mellitus (T2DM). However, whether duration or intensity of exercise is the more important factor has yet to be established. Therefore, we aimed to determine whether exercise prescriptions differing in duration and intensity differ in their ability to aid T2DM patients to retain insulin sensitivity following the conclusion of a period of training. Sedentary T2DM patients (age 51.2 ± 1.3 years) were assigned to either a low-intensity (50% VO<sub>2peak</sub>, <i>n</i> = 27) or a high-intensity exercise group (75% VO<sub>2peak</sub>, <i>n</i> = 28), and followed a 12-week exercise program of 5 sessions/week and 240 kcal/session. Insulin sensitivity (oral glucose tolerance test, ISI) was measured when subjects were sedentary and at 16-24 h and 15 days after the final training bout. The low-intensity group spent more training time to training per exercise session than the high-intensity group (56.1 ± 3.0 min/session vs. 34.3 ± 2.4 min/session) (<i>P</i> < 0.01), but the total amount of energy expended was the same. ISI was increased in both groups 16-24 h after the final training session, but only the low-intensity group still had elevated ISI 15 days after the cessation of training. These findings suggest that in T2DM patients, the persistent training-induced improvements in insulin sensitivity may be more dependent on exercise duration than exercise intensity in regimens with the same level of energy expenditure.

収録刊行物

  • Tohoku journal of experimental medicine

    Tohoku journal of experimental medicine 227(4), 289-296, 2012-08-01

    Tohoku University Medical Press

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各種コード

  • NII論文ID(NAID)
    10030944242
  • NII書誌ID(NCID)
    AA00863920
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00408727
  • データ提供元
    CJP書誌  J-STAGE 
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