Modulating exercise-induced hormesis: Does less equal more?

Jonathan M. Peake, James F. Markworth, Kazunori Nosaka, Truls Raastad, Glenn D. Wadley, Vernon G. Coffey

Research output: Contribution to journalReview articleResearchpeer-review

31 Citations (Scopus)
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Abstract

Hormesis encompasses the notion that low levels of stress stimulate or upregulate existing cellular and molecular pathways that improve the capacity of cells and organisms to withstand greater stress. This notion underlies much of what we know about how exercise conditions the body and induces long-term adaptations. During exercise, the body is exposed to various forms of stress, including thermal, metabolic, hypoxic, oxidative, and mechanical stress. These stressors activate biochemical messengers, which in turn activate various signaling pathways that regulate gene expression and adaptive responses. Historically, antioxidant supplements, nonsteroidal anti-inflammatory drugs, and cryotherapy have been favored to attenuate or counteract exercise-induced oxidative stress and inflammation. However, reactive oxygen species and inflammatory mediators are key signaling molecules in muscle, and such strategies may mitigate adaptations to exercise. Conversely, withholding dietary carbohydrate and restricting muscle blood flow during exercise may augment adaptations to exercise. In this review article, we combine, integrate, and apply knowledge about the fundamental mechanisms of exercise adaptation. We also critically evaluate the rationale for using interventions that target these mechanisms under the overarching concept of hormesis. There is currently insufficient evidence to establish whether these treatments exert dosedependent effects on muscle adaptation. However, there appears to be some dissociation between the biochemical/molecular effects and functional/performance outcomes of some of these treatments. Although several of these treatments influence common kinases, transcription factors, and proteins, it remains to be determined if these interventions complement or negate each other, and whether such effects are strong enough to influence adaptations to exercise.

Original languageEnglish
Pages (from-to)172-189
Number of pages18
JournalJournal of Applied Physiology
Volume119
Issue number3
DOIs
Publication statusPublished - 1 Aug 2015

Fingerprint

Hormesis
Muscles
Oxidative Stress
Dietary Carbohydrates
Mechanical Stress
Cryotherapy
Reactive Oxygen Species
Anti-Inflammatory Agents
Transcription Factors
Phosphotransferases
Up-Regulation
Antioxidants
Hot Temperature
Inflammation
Gene Expression
Therapeutics
Pharmaceutical Preparations
Proteins

Cite this

Peake, Jonathan M. ; Markworth, James F. ; Nosaka, Kazunori ; Raastad, Truls ; Wadley, Glenn D. ; Coffey, Vernon G. / Modulating exercise-induced hormesis : Does less equal more?. In: Journal of Applied Physiology. 2015 ; Vol. 119, No. 3. pp. 172-189.
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Peake, JM, Markworth, JF, Nosaka, K, Raastad, T, Wadley, GD & Coffey, VG 2015, 'Modulating exercise-induced hormesis: Does less equal more?' Journal of Applied Physiology, vol. 119, no. 3, pp. 172-189. https://doi.org/10.1152/japplphysiol.01055.2014

Modulating exercise-induced hormesis : Does less equal more? / Peake, Jonathan M.; Markworth, James F.; Nosaka, Kazunori; Raastad, Truls; Wadley, Glenn D.; Coffey, Vernon G.

In: Journal of Applied Physiology, Vol. 119, No. 3, 01.08.2015, p. 172-189.

Research output: Contribution to journalReview articleResearchpeer-review

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