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|Title: ||Modality-specific training adaptations – do they lead to a dampened acute inflammatory response to exercise?|
|Authors: ||Hoekstra, Sven P.|
Westerman, Matthew N.
Leicht, Christof A.
|Keywords: ||Heat shock protein 72|
Chronic low-grade inflammation
|Issue Date: ||2019|
|Publisher: ||NRC Research Press © The Authors|
|Citation: ||HOEKSTRA, S.P. ... et al, 2019. Modality-specific training adaptations – do they lead to a dampened acute inflammatory response to exercise?. Applied Physiology, Nutrition, and Metabolism, doi:10.1139/apnm-2018-0693.|
|Abstract: ||While adaptations to a short-term training program can dampen the acute inflammatory response to exercise, less is known about the influence of chronic modality-specific adaptations to training. This study compares the acute inflammatory response to upper- and lower-body interval exercise in individuals chronically trained in these respective modalities. Ninety minutes of interval exercise matched for relative power output on an arm-crank (ARM) and cycle ergometer (LEG) was performed by 8 trained paddlers and 8 trained cyclists. Blood samples were taken pre- and post-exercise. Interleukin-6 (IL-6) concentrations were analysed in plasma, while the expression of intracellular Hsp72 was assessed in monocytes (iHsp72). Interleukin-6 was increased following both modalities (fold change ARM: 7.23±3.56, p<0.001; LEG: 9.03±4.82 p<0.001), in both groups (cyclists p<0.001; paddlers p<0.001), but the increase was smaller in ARM compared with LEG (Time x Modality p<0.001). ARM induced a smaller iHsp72 response compared with LEG (fold change ARM: 1.07±0.14, p=0.102; LEG: 1.18±0.14, p<0.001, Time x Modality p = 0.039). Following ARM, iHsp72 expression was increased in the cyclists only (fold change cyclists: 1.12±0.11, p=0.018; paddlers: 1.03±0.17, p=0.647), while iHsp72 expression following LEG was increased in both groups (fold change cyclists: 1.14±0.15, p=0.027; paddlers: 1.22±0.13, p< 0.001). Taken together, the acute inflammatory response to lower-body interval exercise was larger compared with work-matched upper-body interval exercise. Moreover, adaptations to upper-body exercise training dampened the iHsp72 response to this modality. Therefore, exercise may be less effective in reducing chronic low-grade inflammation in individuals relying on their upper body, such as wheelchair users.|
|Description: ||This paper was published in the journal Applied Physiology, Nutrition, and Metabolism and the definitive published version is available at https://doi.org/10.1139/apnm-2018-0693.|
|Version: ||Accepted for publication|
|Publisher Link: ||https://doi.org/10.1139/apnm-2018-0693|
|Appears in Collections:||Published Articles (Sport, Exercise and Health Sciences)|
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