Local heat application enhances glycogenesis

Dustin Slivka, Tyler Tucker, John Cuddy, Walter Hailes, Brent Ruby

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The purpose of this study was to determine the impact of increased local muscle temperature independent of core temperature on glycogenesis during recovery from exercise when adequate carbohydrate provisions were supplied. Nine recreationally active males (age, 23 ± 4 years; height, 178 ± 6 cm; weight 79 ± 9 kg) cycled for 92 min and recovered for 4 h. During recovery the subject's legs were randomly assigned as the heated limb (heat pack application) and control limb (exposed to room air). Participants received 2 carbohydrate feedings (1.8 g·kg -1 of body weight) at 0 and 2 h of recovery. Core temperature, intramuscular temperature, and leg circumference were monitored throughout recovery. Skeletal muscle biopsies samples of the vastus lateralis were obtained at the beginning and end of the 4-h recovery period on both legs and analyzed for glycogen and lactate. Core temperature did not change from throughout recovery. Muscle temperature in the heated limb was higher by 15 min and remained elevated throughout recovery compared with the control limb (p < 0.05). Leg circumference was not different between limbs. Lactate increased from postexercise to 4 h postexercise regardless of trial (p < 0.05). Muscle glycogen concentration increased with recovery and carbohydrate feeding in both limbs (p < 0.05) but was 22% higher in the heated limb compared with the control limb (p < 0.05). This study demonstrates increased glycogenesis when local muscle temperature is increased independent of core temperature.

Original languageEnglish (US)
Pages (from-to)247-251
Number of pages5
JournalApplied Physiology, Nutrition and Metabolism
Volume37
Issue number2
DOIs
StatePublished - Apr 1 2012

Fingerprint

Extremities
Hot Temperature
Temperature
Leg
Muscles
Carbohydrates
Glycogen
Lactic Acid
Quadriceps Muscle
Skeletal Muscle
Air
Body Weight
Biopsy
Weights and Measures

Keywords

  • Core
  • Environment
  • Glycogen
  • Hot
  • Lactate
  • Muscle
  • Resynthesis
  • Temperature

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Physiology
  • Nutrition and Dietetics
  • Physiology (medical)

Cite this

Local heat application enhances glycogenesis. / Slivka, Dustin; Tucker, Tyler; Cuddy, John; Hailes, Walter; Ruby, Brent.

In: Applied Physiology, Nutrition and Metabolism, Vol. 37, No. 2, 01.04.2012, p. 247-251.

Research output: Contribution to journalArticle

Slivka, Dustin ; Tucker, Tyler ; Cuddy, John ; Hailes, Walter ; Ruby, Brent. / Local heat application enhances glycogenesis. In: Applied Physiology, Nutrition and Metabolism. 2012 ; Vol. 37, No. 2. pp. 247-251.
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