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Short-term effects of repetitive arm work and dynamic exercise on glucose metabolism and insulin sensitivity.
Högskolan i Gävle, Belastningsskadecentrum.
Högskolan i Gävle, Belastningsskadecentrum.
Högskolan i Gävle, Belastningsskadecentrum.
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2005 (Engelska)Ingår i: Acta Physiologica Scandinavica, ISSN 0001-6772, E-ISSN 1365-201X, Vol. 183, nr 4, s. 345-356Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Aim: To detennine whether repetitive ann work, with a large component of static muscle contraction alters glucose metabolism and insulin sensitivity.

Methad: Euglycemic clamps (2h) were started in ten healthy individuals 15 minutes after 37 minute periods of: 1) repetitive ann work in a simulated occupational setting; 2) dynamic concentric exercise on a cycle ergometer at 60% OfVO2 max and 3) a resting regime as a control. During the experimental periods, blood samples were collected, blood pressure was measured repeatedly and electrocardiogram (ECG) wasrecorded continuously. During the clamps, euglycemia was maintained at 5 mmo1/l and insulin was infused at 56 mU/m2/min for 120 min.

Results: The insulin-mediated glucose disposal rate (M-value) for the steady state period (60- 120 min) of the clamp, tended to be lower following ann work than for both cycling and resting regimes. When dividing the steady state period into 20-minute intervals, the insulin sensitivity index, (ISI) was significantly lower for ann work compared with the resting control situation between 60-80 minutes (p=0.04) and 80-100 minutes (p=0.01) respectively.

Catecholamines increased significantly for ann work and cycling compared with resting regime. .Data from heart rate variability (HRV) me asurements indicated significant sympathetic activation during repetitive ann work test.

Canelusian: The results indicate that repetitive ann work might acutely promote insulin resistance, whereas no such effect on insulin resistance was produced by dynamic concentric exercise.

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2005. Vol. 183, nr 4, s. 345-356
Nyckelord [en]
Adult, Arm, Blood Glucose analysis, Blood Pressure physiology, Epinephrine blood, Ergometry methods, Exercise physiology, Fatty Acids, Nonesterified blood, Glucose metabolism, Heart Rate physiology, Humans, Hydrocortisone blood, Insulin blood metabolism, Insulin Resistancephysiology, Interleukin-6 blood, Lactates blood, Leptin blood, Male, Muscle Contraction physiology, Muscle, Skeletal physiology, Norepinephrine blood, Tumor Necrosis Factor-alpha analysis
Identifikatorer
URN: urn:nbn:se:hig:diva-2767DOI: 10.1111/j.1365-201X.2005.01407.xISI: 000227969300002PubMedID: 15799771OAI: oai:DiVA.org:hig-2767DiVA, id: diva2:119429
Tillgänglig från: 2007-11-28 Skapad: 2007-11-28 Senast uppdaterad: 2018-03-13Bibliografiskt granskad

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Barnekow-Bergkvist, MargaretaKalezic, NebojsaLyskov, Eugene

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