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Changes in inflammation markers after a 10-week high-intensity combined strength and endurance training block in women: The effect of hormonal contraceptive use
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences. University of Jyväskylä, Finland. (Swedish Winter Sports Research Centre)
University of North Carolina at Chapel Hill, USA.
Kajaani University of Applied Sciences, Finland.
2019 (English)In: Journal of Science and Medicine in Sport, ISSN 1440-2440, E-ISSN 1878-1861, Vol. 22, no 9, p. 1044-1048Article in journal (Refereed) Published
Abstract [en]

Objectives: The influence of hormonal contraceptives (HC) on inflammation and body composition after high-intensity combined strength and endurance training was investigated. Design: Active healthy women formed two training groups: HC users (HCU, n = 9) and those who had never used HC (NHC, n = 9). Training included two strength training sessions and two high-intensity interval training sessions per week for 10 weeks. Methods: Before (PRE) and after (POST) the training intervention, high-sensitivity C-reactive protein (hs-CRP), tumor necrosis factor alpha (TNF-α), interleukin-6 (IL-6), and interleukin-1beta (IL-1β) concentrations were measured. Dual-energy X-ray absorptiometry was used to estimate fat mass (FM), abdominal fat mass (aFM), and lean mass (LM). Results: Circulating concentrations of hs-CRP decreased significantly in the NHC from pre to post with −0.46 mg l−1 (95% CI: −0.78, −0.14, p = 0.009, ES = 0.434), whereas a significant increase was observed in HCU from pre to post with 0.89 mg l−1 (95% CI: 1.66, 0.12, p = 0.048, ES = 1.988) with a significant between-group difference (p = 0.015). In addition, hs-CRP concentration was significantly higher in HCU than in NHC after training (p = 0.036) at post. Lean mass increased significantly more in NHC than in HCU (p = 0.049). Conclusions: High-intensity combined strength and endurance training can modify inflammation and body composition of women. The present study showed that inflammation, in terms of hs-CRP was higher post training in HCU than NHC, which may be associated with smaller gains in lean mass in response to training. 

Place, publisher, year, edition, pages
2019. Vol. 22, no 9, p. 1044-1048
Keywords [en]
Body composition, Fat mass, High-intensity training, Inflammation, Lean mass, Oral contraceptives
National Category
Health Sciences
Identifiers
URN: urn:nbn:se:miun:diva-36675DOI: 10.1016/j.jsams.2019.04.002ISI: 000486132700014PubMedID: 31186194OAI: oai:DiVA.org:miun-36675DiVA, id: diva2:1336248
Available from: 2019-07-09 Created: 2019-07-09 Last updated: 2019-11-12Bibliographically approved

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Ihalainen, Johanna K.

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