A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Associations of physical activity intensities, impact intensities and osteogenic index with proximal femur bone traits among sedentary older adults (2021)
Savikangas, 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. Bone, 143, Article 115704. https://doi.org/10.1016/j.bone.2020.115704
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Savikangas, Tiina; Sipilä, Sarianna; Rantalainen, Timo
Lehti tai sarja: Bone
ISSN: 8756-3282
eISSN: 1873-2763
Julkaisuvuosi: 2021
Volyymi: 143
Artikkelinumero: 115704
Kustantaja: Elsevier
Julkaisumaa: Yhdysvallat (USA)
Julkaisun kieli: englanti
DOI: https://doi.org/10.1016/j.bone.2020.115704
Julkaisun avoin saatavuus: Ei avoin
Julkaisukanavan avoin saatavuus:
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/72478
Tiivistelmä
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.
YSO-asiasanat: fyysinen aktiivisuus; istuminen; ikääntyneet; mineraalit; luusto; luuntiheys; kiihtyvyys
Vapaat asiasanat: accelerometer; physical activity; sedentary; older adults; bone mineral content; bone mineral density
Liittyvät organisaatiot
Hankkeet, joissa julkaisu on tehty
- Iäkkäiden ihmisten turvallisen liikkumisen edistäminen: Fyysisen ja kognitiivisen harjoittelun vaikutukset kävelynopeuteen ja kaatumisiin iäkkäillä vähän liikkuvilla henkilöillä.
- Sipilä, Sarianna
- Suomen Akatemia
- PANINI Physical Activity and Nutrition INfluences In ageing
- Sipilä, Sarianna
- Euroopan komissio
- Kehollinen liikkuminen ja kyky säilyttää elämänlaatu ikääntymisen yhteydessä
- Rantalainen, Timo
- Suomen Akatemia
- Kehollinen liikkuminen ja kyky säilyttää elämänlaatu ikääntymisen yhteydessä (tutkimuskulut)
- Rantalainen, Timo
- Suomen Akatemia
OKM-raportointi: Kyllä
Raportointivuosi: 2021
JUFO-taso: 2