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dc.contributor.authorSavikangas, Tiina
dc.contributor.authorSipilä, Sarianna
dc.contributor.authorRantalainen, Timo
dc.date.accessioned2020-11-04T09:07:42Z
dc.date.available2020-11-04T09:07:42Z
dc.date.issued2021
dc.identifier.citationSavikangas, T., Sipilä, S., & Rantalainen, T. (2021). Associations of physical activity intensities, impact intensities and osteogenic index with proximal femur bone traits among sedentary older adults. <i>Bone</i>, <i>143</i>, Article 115704. <a href="https://doi.org/10.1016/j.bone.2020.115704" target="_blank">https://doi.org/10.1016/j.bone.2020.115704</a>
dc.identifier.otherCONVID_43396678
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/72478
dc.description.abstractBackground Dynamic high-intensity physical activity is thought to be beneficial for older adults’ bone health. Traditional volume-based processing of accelerometer-measured physical activity data, quantified on a minute-per-minute basis, may average out sporadic high impact activity, whereas accelerometer data processing approaches based on identifying impacts can capture also these potentially beneficial short activity bursts. We investigated the associations between habitual physical activity and proximal femur bone traits among sedentary older adults utilizing three different numerical treatments of accelerometer-data to examine, if impact-based processing approaches are more suitable to assess bone loading than volume-based processing of physical activity data among older adults. Methods This cross-sectional study utilized the baseline data from the PASSWORD-study (n=284, mean ± SD age 74 ± 4 years, 57 % women). Total femur bone mineral content (BMC) and bone mineral density (BMD), femoral neck BMC, BMD, section modulus and minimal width (MNW) were measured with dual energy x-ray absorptiometry. Physical activity was measured for seven consecutive days with a tri-axial accelerometer. Raw acceleration data was processed in three different ways and quantified as i) mean daily minutes in sedentary, light and moderate-to-vigorous-intensity activity, ii) mean daily number of acceleration peaks divided into low (1.5 g to 2.0 g), medium (2.0 g to 2.5 g) and high (> 2.5 g) impacts, and iii) mean daily osteogenic index, which is a summary score calculated from log-transformed number of impact peaks in 32 intensity bands (≥ 1.3 g). Associations between physical activity measures and each bone trait were estimated with multiple linear regression adjusted with covariates (age, sex, weight, height, smoking, physical function, medication). Results Participants recorded on average 10 h sedentary, 2.5 hrs light and 32 min moderate-to-vigorous activity, and 3937 low, 494 medium and 157 high impacts per day. Mean osteogenic index score was 173. Light physical activity was positively associated with all bone traits (beta = 0.147 to 0.182, p<0.001 to p=0.005) except MNW. Sedentary or moderate-to-vigorous activity, low, medium or high impacts or osteogenic index were not associated with any bone parameter. Conclusions Light physical activity may decelerate the age-related bone loss in older adults who do not meet the physical activity recommendations. In this population, the amount of high impact activity may be insufficient to stimulate bone remodelling.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofseriesBone
dc.rightsCC BY-NC-ND 4.0
dc.subject.otheraccelerometer
dc.subject.otherphysical activity
dc.subject.othersedentary
dc.subject.otherolder adults
dc.subject.otherbone mineral content
dc.subject.otherbone mineral density
dc.titleAssociations of physical activity intensities, impact intensities and osteogenic index with proximal femur bone traits among sedentary older adults
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202011046514
dc.contributor.laitosLiikuntatieteellinen tiedekuntafi
dc.contributor.laitosFaculty of Sport and Health Sciencesen
dc.contributor.oppiaineBiomekaniikkafi
dc.contributor.oppiaineGerontologia ja kansanterveysfi
dc.contributor.oppiaineBiomechanicsen
dc.contributor.oppiaineGerontology and Public Healthen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.description.reviewstatuspeerReviewed
dc.relation.issn8756-3282
dc.relation.volume143
dc.type.versionacceptedVersion
dc.rights.copyright© 2020 Elsevier Inc. All rights reserved.
dc.rights.accesslevelopenAccessfi
dc.relation.grantnumber328818
dc.relation.grantnumber675003
dc.relation.grantnumber675003
dc.relation.grantnumber321336
dc.relation.grantnumber296843
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020/675003/EU//PANINI
dc.subject.ysokiihtyvyys
dc.subject.ysoistuminen
dc.subject.ysoluusto
dc.subject.ysofyysinen aktiivisuus
dc.subject.ysoluuntiheys
dc.subject.ysomineraalit
dc.subject.ysoikääntyneet
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p23608
jyx.subject.urihttp://www.yso.fi/onto/yso/p13022
jyx.subject.urihttp://www.yso.fi/onto/yso/p7233
jyx.subject.urihttp://www.yso.fi/onto/yso/p23102
jyx.subject.urihttp://www.yso.fi/onto/yso/p22879
jyx.subject.urihttp://www.yso.fi/onto/yso/p2368
jyx.subject.urihttp://www.yso.fi/onto/yso/p2433
dc.rights.urlhttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.relation.doi10.1016/j.bone.2020.115704
dc.relation.funderSuomen Akatemiafi
dc.relation.funderEuroopan komissiofi
dc.relation.funderSuomen Akatemiafi
dc.relation.funderSuomen Akatemiafi
dc.relation.funderAcademy of Finlanden
dc.relation.funderEuropean Commissionen
dc.relation.funderAcademy of Finlanden
dc.relation.funderAcademy of Finlanden
jyx.fundingprogramAkatemiatutkijan tutkimuskulut, SAfi
jyx.fundingprogramMSCA Marie Skłodowska-Curie Actions, H2020fi
jyx.fundingprogramAkatemiatutkijan tehtävä, SAfi
jyx.fundingprogramAkatemiahanke, SAfi
jyx.fundingprogramResearch costs of Academy Research Fellow, AoFen
jyx.fundingprogramMSCA Marie Skłodowska-Curie Actions, H2020en
jyx.fundingprogramResearch post as Academy Research Fellow, AoFen
jyx.fundingprogramAcademy Project, AoFen
jyx.fundinginformationThis research was supported by the Academy of Finland (296843 to SS), which funded the PASSWORD -study. This study was in part funded from the European Union’s Horizon 2020 Research and Innovation Programme under Marie Sklodowska-Curie Actions grant agreement No. 675003 to SS. TR was an Academy Research Fellow during the preparation of this manuscript (Academy of Finland grant numbers 321336 and 328818).


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