Metabolism during Exercise – Energy Expenditure and Hormonal Changes

Henriksson, Jan; Sahlin, Kent

doi:10.1002/9780470757277.ch2

Cited by 2 publications

(1 citation statement)

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“…It is known that the intensity of exercise and duration are important factors in determining the relative recruitment of the energy processes. Other factors, such as availability of oxygen and metabolic substrates, environmental factors and hormonal changes will modify the extent to which the energetic processes occurs [18] and the changes in hematological and inflammatory makers that may or may not happen. For example, an inverse relationship between post-exercise muscle glycogen and IL-6 plasma cytokine levels has been found [28,37].…”

Section: Introductionmentioning

confidence: 99%

Acute Hematological and Inflammatory Responses to High-intensity Exercise Tests: Impact of Duration and Mode of Exercise

et al. 2017

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The purpose of this study was to investigate the hematological and inflammatory responses to 4 maximal high-intensity protocols, considering energy expenditure in each test. 9 healthy volunteers performed 4 high-intensity exercise tests of short [Wingate (WANT); Repeated-sprints (RSA)] and long durations [Continuous VO test (VCONT); intermittent VO test (VINT)] in a cycle-ergometer, until exhaustion. Hematological parameters and IL-6, IL-10 and creatine kinase (CK) levels were determined before (PRE), POST, 30 min, 1, 2, 12 and 24 h after the end of the protocols. Additionally, energy expenditure was determined. Leucocytes, erythrocytes and lymphocytes increased at POST and returned to PRE values at 30 min for all protocols. Lymphocytes had a second decreased at 2 h and granulocytes increased at 2 h when compared to PRE. Both variables returned to PRE values between 12-24 h into recovery. The magnitude of response for IL-6 was greater in VINT and for IL-10 in VCONT. There was no association of energy expenditure within each exercise protocol with the pattern of IL-6, IL-10 and CK responses to the exercise protocols. The present finding support that similar responses after continuous or intermittent acute protocols are observed when exercises are performed to volitional failure, regardless of the duration and mode of exercise.

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Section: Introductionmentioning

confidence: 99%