Impact of local heating and cooling on skeletal muscle transcriptional response related to myogenesis and proteolysis.

European Journal of Applied Physiology
Roksana B ZakDustin Slivka

Abstract

To determine the impact of local muscle heating and cooling on myogenic and proteolytic gene responses following resistance exercise. Recreationally trained males (n = 12), age 25.3 ± 1.5, % body fat 13.6 ± 1.92, completed four sets of 8-12 repetitions of unilateral leg press and leg extension while heating one leg, and cooling the other. Muscle biopsies were taken from the vastus lateralis of each leg pre and 4 h post exercise. MyoD, FOXO1, and MuRF1 mRNA increased with exercise regardless of temperature (p < 0.05). Myostatin, MYF5, and atrogin-1 mRNA decreased with exercise regardless of temperature (p < 0.05). Myogenin, MRF4, and CASP3 mRNA were higher in the hot condition, compared to the cold (p < 0.05). PAX7 mRNA was lower in the hot compared to cold condition (p = 0.041). FOXO3 mRNA was higher in the cold compared to hot condition (p = 0.037). AKT1 and AKT2 were unaffected by either exercise or temperature. Femoral artery blood flow volume was higher in the hot (375.2 ± 41.2 ml min- 1), compared to the cold condition (263.5 ± 23.9 ml min- 1), p = 0.01. Tissue oxygen saturation was higher in the hot (71.7 ± 4.8%) than cold condition (55.3 ± 5.0%). These results suggest an impaired muscle growth response with local cold ap...Continue Reading

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Citations

Dec 4, 2019·The Journal of Physiology·Cas J FuchsLuc J C van Loon
Oct 18, 2019·Sensors·Kai YangSteve Beeby
Feb 28, 2020·Journal of Applied Physiology·Robert ShuteDustin Slivka
Sep 23, 2020·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Ben MeisterDustin Slivka
Aug 3, 2021·Journal of Medical Devices·Laura H NamisnakKenneth R Diller

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Methods Mentioned

BETA
biopsy
biopsies
PCR
infrared spectroscopy

Software Mentioned

SPSS

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