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dc.contributor.authorPihlainen, Kai
dc.contributor.authorSanttila, Matti
dc.contributor.authorVasankari, Tommi
dc.contributor.authorHäkkinen, Keijo
dc.contributor.authorKyröläinen, Heikki
dc.date.accessioned2017-12-11T09:35:24Z
dc.date.available2017-12-11T09:35:24Z
dc.date.issued2018
dc.identifier.citationPihlainen, K., Santtila, M., Vasankari, T., Häkkinen, K., & Kyröläinen, H. (2018). Evaluation of occupational physical load during 6-month international crisis management operation. <em>International Journal of Occupational Medicine and Environmental Health</em>, 31 (2), 185-197. <a href="https://doi.org/10.13075/ijomeh.1896.01048">doi:10.13075/ijomeh.1896.01048</a>
dc.identifier.otherTUTKAID_75284
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/56228
dc.description.abstractObjectives: Generally, operational military duties are associated with a variety of stressors, such as prolonged physical activity (PA). However, limited information is available on the occupational workload or changes in PA during international military operations. Thus, the aim of the study was to investigate the changes in body composition, stress biomarkers, PA, and heart rate (HR) responses of 79 male soldiers during a 6-month international crisis management operation. Material and Methods: Measurements were conducted 3 times in South-Lebanon during the operation. Body composition was assessed by the bioelectrical impedance method. Blood samples were analyzed for serum testosterone, sex-hormone binding globulin (SHBG), cortisol and insulin-like growth factor. Saliva sampling was used for analyzing stress biomarkers, cortisol and α-amylase. Heart rate and physical activity were monitored by a recordable belt and tri-axial accelerometer, respectively. Results: Increases in muscle mass (39.2±4.1 vs. 39.5±4.2 kg, p < 0.05) and testosterone (15.9±4.6 vs. 17.2±4 nmol/l, p < 0.01), and reductions in PA variables (e.g., daily step count 9472±2547 vs. 8321±2720, p < 0.05) were observed during the first half (i.e., PRE-MID) of the study. The increase in muscle mass remained significant during the latter half (PRE-POST, 39.2±4.1 vs. 39.6±4.4 kg, p < 0.05), but also fat mass increased (MID-POST, 10.6±4.6 vs. 11.0±4.7 kg, p < 0.05) while SHBG (MID-POST, 31.8±12.1 vs. 26.6±13.2 nmol/l, p < 0.01) and cortisol (MID-POST, 445±116 vs. 400±123 nmol/l, p < 0.05) decreased. With the exception of increased concentration of salivary α-amylase (PRE-POST, 36.5±33.7 vs. 55.1±39.7 U/ml), the acute stress biomarkers and HR responses remained unchanged. Furthermore, the low quantity of PA, low HR values and subjective ratings of exertion refer to rather light physical workload. Conclusions: Due to the operatively calm nature of the working environment, the present soldiers did not express any significant signs of physical overload during the study period.
dc.language.isoeng
dc.publisherNofer Institute of Occupational Medicine
dc.relation.ispartofseriesInternational Journal of Occupational Medicine and Environmental Health
dc.subject.othertyöterveys
dc.subject.otherfyysinen kuormittavuus
dc.subject.otherfyysinen rasitus
dc.subject.othersotilaat
dc.subject.otherrauhanturvaajat
dc.subject.otherworkload
dc.subject.othermilitary personnel
dc.subject.otherphysical exertion
dc.subject.otheroccupational health
dc.subject.othermilitary medicine
dc.subject.otheraccelerometry
dc.titleEvaluation of occupational physical load during 6-month international crisis management operation
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201712114594
dc.contributor.laitosLiikuntatieteellinen tiedekuntafi
dc.contributor.laitosFaculty of Sport and Health Sciencesen
dc.contributor.oppiaineLiikuntafysiologia
dc.contributor.oppiaineValmennus- ja testausoppi
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2017-12-11T07:15:14Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.format.pagerange185-197
dc.relation.issn1232-1087
dc.relation.volume31
dc.type.versionpublishedVersion
dc.rights.copyright© the Authors, 2018. This is an open access article distributed under the terms of a Creative Commons License.
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttps://creativecommons.org/licenses/by-nc/3.0/pl/deed.en
dc.relation.doi10.13075/ijomeh.1896.01048


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© the Authors, 2018. This is an open access article distributed under the terms of a Creative Commons License.
Except where otherwise noted, this item's license is described as © the Authors, 2018. This is an open access article distributed under the terms of a Creative Commons License.