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  • Title: A comparative study on the effects of acute and chronic downhill running vs uphill running exercise on the RNA levels of the skeletal muscles PGC1-α, FNDC5 and the adipose UCP1 in BALB/c mice.
    Author: Dehghani M, Kargarfard M, Rabiee F, Nasr-Esfahani MH, Ghaedi K.
    Journal: Gene; 2018 Dec 30; 679():369-376. PubMed ID: 30218749.
    Abstract:
    The purpose of this study was to investigate the effect of a single bout and 8 weeks of downhill running versus uphill running exercise on expression of PGC1-α, FNDC5 and UCP1 in mice. Forty-eight BALB/c male mice weighing 25-30 g were randomly assigned into 8 groups: 1) acute downhill running (ADR) on a -15° slope; 2) acute uphill running (AUR) on a +15° slope; 3) acute running without inclination (AWI), 4) acute without exercise as control (ACtrl), 5) chronic downhill running (CDR) on a -15° slope; 6) chronic uphill running (CUR) on a +15°slope; 7) chronic running without inclination (CWI), 8) chronic without exercise as control (CCtrl). Twenty four hours after the last training session, the mice were sacrificed and Calf muscles (including soleus and gastrocnemius) and quadriceps muscles (including Rectus femoris and vastus intermedius) were obtained and expression levels of PGC1-α and FNDC5 in crus and quadriceps muscles and UCP1 in visceral and subcutaneous adipose tissues were measured and compared between the groups. PGC-1α and FNDC5 mRNA levels increased after treadmill exercise training in all acute and chronic exercise groups in both skeletal muscle groups. Furthermore mRNA level of UCP1 in subcutaneous adipose tissue but not in visceral adipose tissue increased both after acute and chronic exercise. Collectively, data showed that downhill running exercise to be more effective than other exercises, as downhill running has led to a greater improvement in metabolism may be considered more effective for browning of fat tissue.
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