Associations of physical activity intensities, impact intensities and osteogenic index with proximal femur bone traits among sedentary older adults
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
Embargoed until: 2022-02-01Request copy from author
© 2020 Elsevier Inc. All rights reserved.
Background 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. ...
Publication in research information system
MetadataShow full item record
- Liikuntatieteiden tiedekunta 
Related funder(s)Academy of Finland; European Commission
Funding program(s)Research costs of Academy Research Fellow, AoF; Research post as Academy Research Fellow, AoF; Academy Project, AoF
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingThis 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). ...
Showing items with similar title or keywords.
Associations of physical activity in detailed intensity ranges with body composition and physical function : a cross-sectional study among sedentary older adults Savikangas, Tiina; Tirkkonen, Anna; Alen, Markku; Rantanen, Taina; Fielding, Roger A.; Rantalainen, Timo; Sipilä, Sarianna (BioMed Central, 2020)Background Physical activity is crucial to maintain older adults’ health and functioning, but the health benefits of particular activity intensities remain unclear. The aim of this cross-sectional study was to peruse the ...
Associations of physical activity, sedentary time, and cardiorespiratory fitness with heart rate variability in 6- to 9-year-old children : the PANIC study Veijalainen, Aapo; Haapala, Eero A.; Väistö, Juuso; Leppänen, Marja H.; Lintu, Niina; Tompuri, Tuomo; Seppälä, Santeri; Ekelund, Ulf; Tarvainen, Mika P.; Westgate, Kate; Brage, Søren; Lakka, Timo A. (Springer, 2019)Purpose. To study the associations of physical activity (PA), sedentary time (ST), and cardiorespiratory fitness (CRF) with heart rate variability (HRV) in children. Methods. The participants were a population sample ...
Five-year follow-up results of aerobic and impact training on bone mineral density in early breast cancer patients Vehmanen, L.; Sievänen, H.; Kellokumpu-Lehtinen, P.; Nikander, R.; Huovinen, R.; Ruohola, J.; Penttinen, H. M.; Utriainen, M.; Tokola, K.; Blomqvist, C.; Saarto, T. (Springer, 2021)Summary A 12-month exercise program reversibly prevented hip bone loss in premenopausal women with early breast cancer. The bone-protective effect was maintained for 2 years after the end of the program but was lost ...
Associations of Objectively Measured Physical Activity and Sedentary Time With Arterial Stiffness in Pre-Pubertal Children Haapala, Eero; Väistö, Juuso; Veijalainen, Aapo; Lintu, Niina; Wiklund, Petri; Westgate, Kate; Ekelund, Ulf; Lindi, Virpi; Brage, Soren; Lakka, Timo A. (Human Kinetics Inc., 2017)Purpose: To investigate the relationships of objectively measured physical activity (PA) and sedentary time (ST) to arterial stiffness in prepubertal children. Method: Altogether 136 children (57 boys, 79 girls) aged ...
Physical activity from adolescence to young adulthood : patterns of change, and their associations with activity domains and sedentary time Aira, Tuula; Vasankari, Tommi; Heinonen, Olli Juhani; Korpelainen, Raija; Kotkajuuri, Jimi; Parkkari, Jari; Savonen, Kai; Uusitalo, Arja; Valtonen, Maarit; Villberg, Jari; Vähä-Ypyä, Henri; Kokko, Sami Petteri (Biomed Central, 2021)Background: Longitudinal studies demonstrate an average decline in physical activity (PA) from adolescence to young adulthood. However, while some subgroups of adolescents decrease activity, others increase or maintain ...