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Brailey G, Metcalf B, Price L, Cumming S, Rowlands A, Olds T, Simm P, Wake M, Stiles V. Improving the identification of bone-specific physical activity using wrist-worn accelerometry: A cross-sectional study in 11-12-year-old Australian children. Eur J Sport Sci 2024; 24:987-998. [PMID: 38956788 PMCID: PMC11235707 DOI: 10.1002/ejsc.12122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 04/03/2024] [Accepted: 04/24/2024] [Indexed: 07/04/2024]
Abstract
Physical activity (PA) during childhood and adolescence is important for the accrual of maximal peak bone mass. The precise dose that benefits bone remains unclear as methods commonly used to analyze PA data are unsuitable for measuring bone-relevant PA. Using improved accelerometry methods, this study identified the amount and intensity of PA most strongly associated with bone outcomes in 11-12-year-olds. Participants (n = 770; 382 boys) underwent tibial peripheral quantitative computed tomography to assess trabecular and cortical density, endosteal and periosteal circumference and polar stress-strain index. Seven-day wrist-worn raw acceleration data averaged over 1-s epochs was used to estimate time accumulated above incremental PA intensities (50 milli-gravitational unit (mg) increments from 200 to 3000 mg). Associations between time spent above each 50 mg increment and bone outcomes were assessed using multiple linear regression, adjusted for age, sex, height, weight, maturity, socioeconomic position, muscle cross-sectional area and PA below the intensity of interest. There was a gradual increase in mean R2 change across all bone-related outcomes as the intensity increased in 50 mg increments from >200 to >700 mg. All outcomes became significant at >700 mg (R2 change = 0.6%-1.3% and p = 0.001-0.02). Any further increases in intensity led to a reduction in mean R2 change and associations became non-significant for all outcomes >1500 mg. Using more appropriate accelerometry methods (1-s epochs; no a priori application of traditional cut-points) enabled us to identify that ∼10 min/day of PA >700 mg (equivalent to running ∼10 km/h) was positively associated with pQCT-derived measures of bone density, geometry and strength in 11-12-year-olds.
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Affiliation(s)
- Gemma Brailey
- Department of Public Health and Sport SciencesFaculty of Health and Life SciencesUniversity of ExeterExeterUK
| | - Brad Metcalf
- Department of Public Health and Sport SciencesFaculty of Health and Life SciencesUniversity of ExeterExeterUK
| | - Lisa Price
- Department of Public Health and Sport SciencesFaculty of Health and Life SciencesUniversity of ExeterExeterUK
| | | | - Alex Rowlands
- Diabetes Research CentreLeicester General HospitalUniversity of LeicesterLeicesterUK
- National Institute for Health Research (NIHR) Leicester Biomedical Research Centre (BRC)University Hospitals of Leicester NHS Trust and the University of LeicesterLeicesterUK
| | - Timothy Olds
- Alliance for Research in Exercise, Nutrition, and ActivityUniversity of South AustraliaAdelaideSouth AustraliaAustralia
- Murdoch Children's Research InstituteRoyal Children's HospitalParkvilleVictoriaAustralia
| | - Peter Simm
- Murdoch Children's Research InstituteRoyal Children's HospitalParkvilleVictoriaAustralia
- Department of Endocrinology and DiabetesRoyal Children's HospitalParkvilleVictoriaAustralia
- Department of PaediatricsUniversity of MelbourneParkvilleVictoriaAustralia
| | - Melissa Wake
- Murdoch Children's Research InstituteRoyal Children's HospitalParkvilleVictoriaAustralia
- Department of PaediatricsUniversity of MelbourneParkvilleVictoriaAustralia
| | - Victoria Stiles
- Department of Public Health and Sport SciencesFaculty of Health and Life SciencesUniversity of ExeterExeterUK
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Brailey G, Metcalf B, Lear R, Price L, Cumming S, Stiles V. A comparison of the associations between bone health and three different intensities of accelerometer-derived habitual physical activity in children and adolescents: a systematic review. Osteoporos Int 2022; 33:1191-1222. [PMID: 35089364 PMCID: PMC9106641 DOI: 10.1007/s00198-021-06218-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 09/14/2021] [Indexed: 12/02/2022]
Abstract
Positive associations have been identified between bone outcomes and accelerometer-derived moderate (MPA) and vigorous (VPA) physical activity (PA) in youth; however, it remains unclear which intensity is most beneficial. This systematic review aimed to summarise accelerometer-derived methods used to estimate habitual PA in children and adolescents and determine whether the magnitude of association was consistently stronger for a particular intensity (MPA/MVPA/VPA). Observational studies assessing associations between accelerometer-derived MPA and/or MVPA and VPA with bone outcomes in children and adolescents (≤ 18 years) were identified in MEDLINE, EMBASE, Web of Science, SPORTDiscus and the Cochrane Central Register of Controlled Trials. Thirty articles were included (total n = 20,613 (10,077 males), 4-18 years). Chi-square tests determined whether the proportion of significant associations and strongest within-study associations differed significantly between intensities. Results demonstrated that accelerometer methods were highly variable between studies. Of the 570 associations analysed, 186 were significant (p < 0.05). The proportion of within-study strongest associations differed by PA intensity (3 × 2 χ2 = 86.6, p < 0.001) and was significantly higher for VPA (39%) compared to MVPA (5%; 2 × 2 χ2 = 55.3, p < 0.001) and MPA (9%, 2 × 2 χ2 = 49.1, p < 0.001). Results indicated a greater benefit of VPA over MPA/MVPA; however, variability in accelerometer-derived methods used prevents the precise bone-benefitting amount of VPA from being identified. Long epochs and numerous intensity cut-point definitions mean that bone-relevant PA has likely been missed or misclassified in this population. Future research should explore the use of shorter epochs (1 s) and identify bone-specific activity intensities, rather than using pre-defined activity classifications more relevant to cardiovascular health.
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Affiliation(s)
- Gemma Brailey
- Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK.
| | - Brad Metcalf
- Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Rebecca Lear
- Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Lisa Price
- Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Sean Cumming
- Department for Health, University of Bath, Bath, UK
| | - Victoria Stiles
- Sport and Health Sciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
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Medeleanu M, Vali R, Sadeghpour S, Moineddin R, Doria AS. A systematic review and meta-analysis of pediatric normative peripheral quantitative computed tomography data. Bone Rep 2021; 15:101103. [PMID: 34377749 PMCID: PMC8327482 DOI: 10.1016/j.bonr.2021.101103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 06/15/2021] [Accepted: 06/28/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Peripheral-quantitative computed tomography (pQCT) provides an intriguing diagnostic alternative to dual-energy X-ray absorptiometry (DXA) since it can measure 3D bone geometry and differentiate between the cortical and trabecular bone compartments. OBJECTIVE To investigate and summarize the methods of pQCT image acquisition of in children, adolescents and/or young adults (up to age 20) and to aggregate the published normative pQCT data. EVIDENCE ACQUISITION A literature search was conducted in MEDLINE and EMBASE from 1947 to December 2020. Quality of the included articles was assessed using Standards for Reporting of Diagnostic Accuracy (STARD) scoring system and United States Preventative Services Task Force (USPSTF) Study Design Categorization. Seven articles, encompassing a total of 2134 participants, were aggregated in the meta-analysis. Due to dissimilar age groups and scan sites, only seven pQCT parameters of the 4% radius, 4% tibia and 38% tibia were analyzed in this meta-analysis. EVIDENCE SYNTHESIS The overall fixed-effect estimates of trabecular vBMD of the 4% radius were: 207.16 (201.46, 212.86), mg/cm3 in 8 to 9 year-old girls, 210.42 (201.91, 218.93)in 10 to 12 year-old girls, 226.99 (222.45, 231.54) in 12 to 13 year-old girls, 259.97 (254.85, 265.10) in 12 to 13 year-old boys and 171.55 (163.41,179.69) in 16 to 18 year-old girls. 21 of 54 (38.9%) primary papers received a 'good' STARD quality of reporting score (<90 and 70 ≥ %) (mean STARD score of all articles = 69.4%). The primary articles of this review had a 'good' level USPSTF study design categorization. However, most of the normative data in these articles were non-comparable and non-aggregable due to a lack of standardization of reference lines, acquisition parameters and/or age at acquisition. CONCLUSION There is not sufficient evidence to suggest that pQCT is appropriately suited for use in the pediatric clinical setting. Normative pediatric data must be systematically derived for pQCT should it ever be a modality that is used outside of research. CLINICAL IMPACT We demonstrate the need for normative pQCT reference data and for clinical guidelines that standardize pediatric acquisition parameters and delineate its use in pediatric settings.
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Affiliation(s)
- Maria Medeleanu
- Department of Physiology, Faculty of Medicine, University of Toronto, Canada
- Translational Medicine, Hospital for Sick Children, Canada
| | - Reza Vali
- Department of Physiology, Faculty of Medicine, University of Toronto, Canada
- Department of Diagnostic Imaging, Hospital for Sick Children and Department of Medical imaging, University of Toronto, Canada
| | | | - Rahim Moineddin
- Biostatistics Division, Dalla Lana School of Public Health, University of Toronto, Canada
| | - Andrea S. Doria
- Department of Physiology, Faculty of Medicine, University of Toronto, Canada
- Department of Diagnostic Imaging, Hospital for Sick Children and Department of Medical imaging, University of Toronto, Canada
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An M, Chen T, Zhou Q, Ma J. Paternal and maternal support of moderate-to-vigorous physical activity in children on weekdays and weekends: a cross-sectional study. BMC Public Health 2021; 21:1776. [PMID: 34592977 PMCID: PMC8482694 DOI: 10.1186/s12889-021-11730-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/03/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Most studies of associations between parental support behaviours for physical activity (PA) and children's moderate-to-vigorous physical activity (MVPA) have been conducted in developed countries, and they have focused on maternal or parental support behaviours. Children's MVPA time (i.e., weekdays vs. weekends) has not been adequately differentiated. This paper investigated the associations of paternal and maternal support behaviours for PA with the proportion of children who met the MVPA recommendations on weekdays and weekends in China. METHODS Cross-sectional data of 517 father-child dyads and 1422 mother-child dyads were analysed. The children recorded PA diaries on 7 consecutive days to assess their MVPA time. The father or mother completed a questionnaire concerning their support for children's PA. Multivariate logistic regression was used to investigate the independent effects of paternal and maternal support behaviours for PA on whether children met the MVPA recommendations for weekdays, weekends, and the whole week. RESULTS Significantly fewer children met the MVPA recommendations on weekends (37.8%) than on weekdays (62.8%). Higher paternal (odds ratio [OR] = 1.098, 95% confidence interval [CI]: 1.009-1.195) and maternal (OR = 1.076, 95% CI: 1.021-1.134) total support behaviour scores were associated with higher odds of children meeting the MVPA recommendations on weekends, after controlling for covariates. Paternal PA knowledge-sharing with the child was positively associated with children meeting the MVPA recommendations on weekends (OR = 1.319, 95% CI: 1.055-1.649); it tended to be associated with children meeting the MVPA recommendations on weekdays and throughout the week, although these associations were not statistically significant. Maternal reservation of PA time for the child was positively associated with a higher likelihood of children meeting the MVPA recommendations on weekdays (OR = 1.160, 95% CI: 1.025-1.313), weekends (OR = 1.241, 95% CI: 1.097-1.403), and throughout the week (OR = 1.214, 95% CI: 1.076-1.369). CONCLUSIONS Paternal and maternal support behaviours for PA should be enhanced on weekends to increase children's MVPA. Fathers should share PA knowledge with children and mothers should reserve PA time for children every day.
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Affiliation(s)
- Meijing An
- Institute of Child and Adolescent Health, School of Public Health, Peking University, No. 38 Xueyuan Road, Haidian District, Beijing, 100191 China
- Department of Maternal and Child Health, School of Public Health, Peking University, No. 38 Xueyuan Road, Haidian District, Beijing, 100191 China
| | - Tianjiao Chen
- Institute of Child and Adolescent Health, School of Public Health, Peking University, No. 38 Xueyuan Road, Haidian District, Beijing, 100191 China
| | - Qianling Zhou
- Department of Maternal and Child Health, School of Public Health, Peking University, No. 38 Xueyuan Road, Haidian District, Beijing, 100191 China
| | - Jun Ma
- Institute of Child and Adolescent Health, School of Public Health, Peking University, No. 38 Xueyuan Road, Haidian District, Beijing, 100191 China
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Fraysse F, Post D, Eston R, Kasai D, Rowlands AV, Parfitt G. Physical Activity Intensity Cut-Points for Wrist-Worn GENEActiv in Older Adults. Front Sports Act Living 2021; 2:579278. [PMID: 33521631 PMCID: PMC7843957 DOI: 10.3389/fspor.2020.579278] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 12/07/2020] [Indexed: 11/29/2022] Open
Abstract
Purpose: This study aims to (1) establish GENEActiv intensity cutpoints in older adults and (2) compare the classification accuracy between dominant (D) or non-dominant (ND) wrist, using both laboratory and free-living data. Methods: Thirty-one older adults participated in the study. They wore a GENEActiv Original on each wrist and performed nine activities of daily living. A portable gas analyzer was used to measure energy expenditure for each task. Testing was performed on two occasions separated by at least 8 days. Some of the same participants (n = 13) also wore one device on each wrist during 3 days of free-living. Receiver operating characteristic analysis was performed to establish the optimal cutpoints. Results: For sedentary time, both dominant and non-dominant wrist had excellent classification accuracy (sensitivity 0.99 and 0.97, respectively; specificity 0.91 and 0.86, respectively). For Moderate to Vigorous Physical Activity (MVPA), the non-dominant wrist device had better accuracy (ND sensitivity: 0.90, specificity 0.79; D sensitivity: 0.90, specificity 0.64). The corresponding cutpoints for sedentary-to-light were 255 and 375 g · min (epoch independent: 42.5 and 62.5 mg), and those for the light-to-moderate were 588 and 555 g · min (epoch-independent: 98.0 and 92.5 mg) for the non-dominant and dominant wrist, respectively. For free-living data, the dominant wrist device resulted in significantly more sedentary time and significantly less light and MVPA time compared to the non-dominant wrist.
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Affiliation(s)
- François Fraysse
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, Adelaide, SA, Australia
| | - Dannielle Post
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, Adelaide, SA, Australia
| | - Roger Eston
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, Adelaide, SA, Australia
| | - Daiki Kasai
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, Adelaide, SA, Australia
| | - Alex V Rowlands
- National Institute for Health Research Leicester Biomedical Research Centre, Leicester, United Kingdom.,Diabetes Research Centre, University of Leicester, Leicester, United Kingdom
| | - Gaynor Parfitt
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, Adelaide, SA, Australia
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Dumuid D, Simm P, Wake M, Burgner D, Juonala M, Wu F, Magnussen CG, Olds T. The "Goldilocks Day" for Children's Skeletal Health: Compositional Data Analysis of 24-Hour Activity Behaviors. J Bone Miner Res 2020; 35:2393-2403. [PMID: 32730680 DOI: 10.1002/jbmr.4143] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 07/16/2020] [Accepted: 07/23/2020] [Indexed: 12/13/2022]
Abstract
Optimization of children's activity behaviors for skeletal health is a key public health priority, yet it is unknown how many hours of moderate to vigorous physical activity (MVPA), light physical activity (LPA), sedentary behavior, or sleep constitute the best day-the "Goldilocks Day"-for children's bone structure and function. To describe the best day for children's skeletal health, we used data from the cross-sectional Child Health CheckPoint. Included participants (n = 804, aged 10.7 to 12.9 years, 50% male) underwent tibial peripheral quantitative CT to assesses cross-sectional area, trabecular and cortical density, periosteal and endosteal circumference, polar moment of inertia, and polar stress-strain index. Average daily time-use composition (MVPA, LPA, sedentary time, and sleep) was assessed through 8-day, 24-hour accelerometry. Skeletal outcomes were regressed against time-use compositions expressed as isometric log-ratios (with quadratic terms where indicated), adjusted for sex, age, pubertal status, and socioeconomic position. The models were used to estimate optimal time-use compositions (associated with best 5% of each skeletal outcome), which were plotted in three-dimensional quaternary figures. The center of the overlapping area was considered the Goldilocks Day for skeletal health. Children's time-use composition was associated with all skeletal measures (all p ≤ 0.001) except cross-sectional area (p = 0.72). Days with more sleep and MVPA, less sedentary time, and moderate LPA were beneficially associated with skeletal measures, except cortical density, which was adversely associated. The Goldilocks daily time-use composition for overall skeletal health was center (range): 10.9 (10.5 to 11.5) hours sleep; 8.2 (7.8 to 8.8) hours sedentary time; 3.4 (2.8 to 4.2) hours LPA, and 1.5 (1.3 to 1.5) hours MVPA. Estimated optimal sleep duration is consistent with current international guidelines (9 to 11 hours), while estimated optimal MVPA exceeds recommendations of at least 60 min/d. This first study to describe optimal durations of daily activities for children's skeletal health provides evidence to underpin guidelines. © 2020 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Dorothea Dumuid
- Allied Health & Human Performance, Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, Adelaide, Australia
| | - Peter Simm
- Murdoch Children's Research Institute, Parkville, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, Australia
- Department of Endocrinology and Diabetes, Royal Children's Hospital, Parkville, Australia
| | - Melissa Wake
- Murdoch Children's Research Institute, Parkville, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, Australia
- Liggins Institute, University of Auckland, Grafton, New Zealand
| | - David Burgner
- Murdoch Children's Research Institute, Parkville, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, Australia
| | - Markus Juonala
- Department of Medicine, University of Turku, Turku, Finland
- Division of Medicine, Turku University Hospital, Turku, Finland
| | - Feitong Wu
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
| | - Costan G Magnussen
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland
- Centre for Population Health Research, University of Turku and Turku University Hospital, Turku, Finland
| | - Timothy Olds
- Allied Health & Human Performance, Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, Adelaide, Australia
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Bland VL, Heatherington-Rauth M, Howe C, Going SB, Bea JW. Association of objectively measured physical activity and bone health in children and adolescents: a systematic review and narrative synthesis. Osteoporos Int 2020; 31:1865-1894. [PMID: 32542544 DOI: 10.1007/s00198-020-05485-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 06/01/2020] [Indexed: 12/11/2022]
Abstract
The influence of day-to-day physical activity on bone in adolescence has not been well characterized. Forty articles were identified that assessed the relationship between accelerometry-derived physical activity and bone outcomes in adolescents. Physical activity was positively associated with bone strength in peri-pubertal males, with less consistent evidence in females. Physical activity (PA) is recommended to optimize bone development in childhood and adolescence; however, the influence of day-to-day PA on bone development is not well defined. The aim of this review was to describe the current evidence for objectively measured PA on bone outcomes in healthy children and adolescents. MEDLINE, Embase, Cochrane Library, Scopus, Web of Science, CINAHL, PsycInfo, and ClinicalTrials.gov were searched for relevant articles up to April 2020. Studies assessing the relationship between accelerometry-derived PA and bone outcomes in adolescents (6-18 years old) were included. Two reviewers independently screened studies for eligibility, extracted data, and rated study quality. Forty articles met inclusion criteria (25 cross-sectional, 15 longitudinal). There was significant heterogeneity in accelerometry methodology and bone outcomes measured. Studies in males indicated a significant, positive relationship between moderate to vigorous PA (MVPA) and bone outcomes at the hip and femur, particularly during the peri-pubertal years. The results for MVPA and bone outcomes in females were mixed. There was a paucity of longitudinal studies using pQCT and a lack of data regarding how light PA and/or impact activity influences bone outcomes. The current evidence suggests that objectively measured MVPA is positively associated with bone outcomes in children and adolescents, especially in males. However, inconsistencies in methodology make it difficult to determine the amount and type of PA that leads to favorable bone outcomes. Given that the majority of research has been conducted in Caucasian adolescents, further research is needed in minority populations.
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Affiliation(s)
- V L Bland
- Department of Nutritional Sciences, University of Arizona, 1177 E 4th St, Tucson, AZ, 85721, USA.
| | - M Heatherington-Rauth
- Exercise and Health Laboratory, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, 1499-002, Cruz-Quebrada, Portugal
| | - C Howe
- University of Arizona Health Sciences Library, University of Arizona, 1501 N Campbell Ave, Tucson, AZ, 85724, USA
| | - S B Going
- Department of Nutritional Sciences, University of Arizona, 1177 E 4th St, Tucson, AZ, 85721, USA
| | - J W Bea
- Department of Nutritional Sciences, University of Arizona, 1177 E 4th St, Tucson, AZ, 85721, USA
- University of Arizona Cancer Center, 3838 N Campbell Ave, Tucson, AZ, 85719, USA
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Bland VL, Bea JW, Roe DJ, Lee VR, Blew RM, Going SB. Physical activity, sedentary time, and longitudinal bone strength in adolescent girls. Osteoporos Int 2020; 31:1943-1954. [PMID: 32388589 DOI: 10.1007/s00198-020-05406-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 03/30/2020] [Indexed: 10/24/2022]
Abstract
UNLABELLED The association between baseline physical activity and sedentary time with 2-year longitudinal bone strength was evaluated. The effect of physical activity on bone depended on maturity status. Sedentary time did not negatively impact bone outcomes, regardless of maturity. Maturity should be considered when developing exercise interventions to improve bone outcomes. INTRODUCTION Physical activity during adolescence is important to obtain peak bone mass; however, adolescents are increasingly sedentary, potentially increasing risk for osteoporosis later in life. The aim of this study was to assess the association of physical activity and sedentary time with 2-year longitudinal bone outcomes in adolescent females (69% Hispanic/31% non-Hispanic). METHODS Bone strength was assessed at the 66% tibia, 20% femur, and 66% radius of 9- to 12-year-old girls (n = 131) using peripheral quantitative computed tomography at baseline and 2-year follow-up. Physical activity and sedentary time were assessed via accelerometry. Linear regression analyses were used to assess whether baseline vigorous physical activity (VPA), moderate physical activity (MPA), light physical activity (LPA), or sedentary time predict longitudinal bone outcomes, adjusting for relevant confounders. RESULTS Significant interactions were found between maturity offset and physical activity. In weight-bearing bones, significant interactions were primarily identified between VPA and maturity offset. Interactions indicated that VPA was associated with favorable bone outcomes at the tibia and femur in girls further past the age of PHV. However, this favorable effect was not observed in girls closer to the age of PHV. At the radius, interactions were primarily observed between LPA and maturity offset. Again, LPA was more beneficial for girls further past the age of PHV. Sedentary time did not significantly influence bone outcomes. CONCLUSION The effects of physical activity on bone may be dependent on maturity. Therefore, physical activity interventions, with attention to maturity status, may be required to optimize bone strength in girls.
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Affiliation(s)
- V L Bland
- Department of Nutritional Sciences, University of Arizona, 1177 E 4th St, Tucson, AZ, 85721, USA.
| | - J W Bea
- Department of Nutritional Sciences, University of Arizona, 1177 E 4th St, Tucson, AZ, 85721, USA
- Department of Medicine, University of Arizona, 1501 N Campbell Ave, Tucson, AZ, 85724, USA
- University of Arizona Cancer Center, 3838 N Campbell Ave, Tucson, AZ, 85719, USA
| | - D J Roe
- University of Arizona Cancer Center, 3838 N Campbell Ave, Tucson, AZ, 85719, USA
- Department of Epidemiology and Biostatistics, University of Arizona, Tucson, AZ, 85724, USA
| | - V R Lee
- Department of Nutritional Sciences, University of Arizona, 1177 E 4th St, Tucson, AZ, 85721, USA
| | - R M Blew
- Department of Nutritional Sciences, University of Arizona, 1177 E 4th St, Tucson, AZ, 85721, USA
| | - S B Going
- Department of Nutritional Sciences, University of Arizona, 1177 E 4th St, Tucson, AZ, 85721, USA
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Yamakita M, Ando D, Akiyama Y, Sato M, Suzuki K, Yamagata Z. Association of objectively measured physical activity and sedentary behavior with bone stiffness in peripubertal children. J Bone Miner Metab 2019; 37:1095-1103. [PMID: 31214840 DOI: 10.1007/s00774-019-01021-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 06/07/2019] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Physical activity (PA) is a key factor of bone mass acquisition in peripubertal children. Sedentary behavior (SB) has been shown to influence bone outcomes. This study aimed to examine the association between objectively measured PA and SB and bone stiffness in Japanese children. MATERIALS AND METHODS Participants were fifth-grade children aged 10-11 years from Project Koshu. The stiffness index (SI) of the calcaneus was measured by quantitative ultrasound; PA and SB were evaluated by an accelerometer. Each PA parameter was divided into sex-specific tertile or stratified by recommended PA guideline [≥ 60 min/day of moderate-to-vigorous PA (MVPA)]. The SI was compared among PA and SB through analysis of covariance with Bonferroni correction. RESULTS Of 174 children, complete data were obtained from 134 (60 boys and 74 girls). The SI in boys was higher in the highest tertile of MVPA than that in the other groups. A similar association was found in girls but was not significant. Children who met the PA guideline had higher SI than those who did not, but there was no significant difference. A negative relation was observed in girls, with the SI gradually decreasing along with increasing SB (p for trend = 0.038). This association was not observed among boys. CONCLUSION This study suggests that MVPA is positively associated with bone stiffness in Japanese schoolchildren in boys and SB is negatively associated with that in girls. Reducing SB might be a brief modifiable factor for preventing lower peak bone mass in girls, in addition to increasing MVPA.
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Affiliation(s)
- Mitsuya Yamakita
- College of Liberal Arts and Sciences, Kitasato University, Sagamihara, Kanagawa, 252-0373, Japan.
| | - Daisuke Ando
- Division of Human Sciences, Faculty of Education, Graduate School Department of Interdisciplinary Research, University of Yamanashi, Kofu, Yamanashi, Japan
| | - Yuka Akiyama
- Division of Medicine, Department of Health Sciences, Basic Science for Clinical Medicine, Graduate School Department of Interdisciplinary Research, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Miri Sato
- Center for Birth Cohort Studies, Graduate School Department of Interdisciplinary Research, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Kohta Suzuki
- Department of Health and Psychosocial Medicine, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Zentaro Yamagata
- Division of Medicine, Department of Health Sciences, Basic Science for Clinical Medicine, Graduate School Department of Interdisciplinary Research, University of Yamanashi, Chuo, Yamanashi, Japan
- Center for Birth Cohort Studies, Graduate School Department of Interdisciplinary Research, University of Yamanashi, Chuo, Yamanashi, Japan
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Vlok J, Simm PJ, Lycett K, Clifford SA, Grobler AC, Lange K, Ismail N, Osborn W, Wake M. pQCT bone geometry and strength: population epidemiology and concordance in Australian children aged 11-12 years and their parents. BMJ Open 2019; 9:63-74. [PMID: 31273017 PMCID: PMC6624036 DOI: 10.1136/bmjopen-2018-022400] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 12/24/2018] [Accepted: 04/04/2019] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVES To describe the epidemiology and concordance of bone health in a population-based sample of Australian parent-child dyads at child age 11-12 years. DESIGN Population-based cross-sectional study (the Child Health CheckPoint) nested between waves 6 and 7 of the Longitudinal Study of Australian Children (LSAC). SETTING Assessment centres in seven cities around Australia, February 2015-March 2016. PARTICIPANTS of all participating CheckPoint families (n=1874), bone data were available for 1222 dyads (1271 children, 50% girls; 1250 parents, 86% mothers). OUTCOME MEASURES Peripheral quantitative CT (pQCT) of the non-dominant leg scanned at the 4% (distal) and 66% (mid-calf) tibial sites. Stratec XCT 2000 software generated estimates of bone density, geometry and polar stress-strain index.Parent-child concordance were assessed using Pearson's correlation coefficients and multivariable linear regression models. Percentiles were determined using survey weights. Survey weights and methods accounted for LSAC's complex sampling, stratification and clustering within postcodes. RESULTS Concordances were greater for the geometric pQCT parameters (periosteal circumference 0.38, 95% CI 0.33 to 0.43; endosteal circumference 0.42, 95% CI 0.37 to 0.47; total cross-sectional area 0.37, 95% CI 0.32 to 0.42) than density (cortical density 0.25, 95% CI 0.19 to 0.30). Mother-child and father-child values were similar. Relationships attenuated only slightly on adjustment for age, sex and body mass index. Percentiles and concordance are presented for the whole sample and by sex. CONCLUSIONS There is strong parent-child concordance in bone geometry and, to a lesser extent, density even before the period of peak adolescent bone deposition. This geometrical concordance suggests that future intergenerational bone studies could consider using pQCT rather than the more commonly used dual X-ray absorptiometry (DXA).
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Affiliation(s)
- Jennifer Vlok
- Department of Surgery, Royal Melbourne Hospital, Parkville, Victoria, Australia
- Murdoch Children’s Research Institute, Parkville, Victoria, Australia
| | - Peter J Simm
- Murdoch Children’s Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia
- Department of Endocrinology, The Royal Children’s Hospital, Melbourne, Victoria, Australia
| | - Kate Lycett
- Murdoch Children’s Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia
- School of Psychology, Deakin University, Burwood, Victoria, Australia
| | - Susan A Clifford
- Murdoch Children’s Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia
| | - Anneke C Grobler
- Murdoch Children’s Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia
| | - Katherine Lange
- Murdoch Children’s Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia
| | - Najmi Ismail
- Murdoch Children’s Research Institute, Parkville, Victoria, Australia
| | - William Osborn
- Murdoch Children’s Research Institute, Parkville, Victoria, Australia
| | - Melissa Wake
- Murdoch Children’s Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia
- Department of Paediatrics and The Liggins Institute, The University of Auckland, Auckland, New Zealand
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Ubago-Guisado E, Vlachopoulos D, Fatouros IG, Deli CK, Leontsini D, Moreno LA, Courteix D, Gracia-Marco L. Longitudinal determinants of 12-month changes on bone health in adolescent male athletes. Arch Osteoporos 2018; 13:106. [PMID: 30306385 PMCID: PMC6310711 DOI: 10.1007/s11657-018-0519-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 09/16/2018] [Indexed: 02/03/2023]
Abstract
UNLABELLED We identified the determinants of 12-month changes of areal bone mineral density (aBMD), hip geometry and trabecular bone score (TBS) in adolescent male athletes. Changes in region-specific lean mass and the type of sport are the most consistent determinants in this population. PURPOSE This study aims to identify the determinants of 12-month changes of areal bone mineral density (aBMD), hip geometry and trabecular bone score (TBS) in adolescent male athletes. METHODS The sample was 104 adolescent males aged 12-14 years at baseline that were followed over 12 months: 39 swimmers, 37 footballers (or soccer players) and 28 cyclists. Dual-energy X-ray absorptiometry measured aBMD at the whole body, lumbar spine and dual hip. Hip geometry estimates at the femoral neck were measured using hip structural analysis. Lumbar spine texture was measured by TBS. RESULTS Multivariate regression models significantly explained 38-60% of the variance in the aBMD changes, 36-62% in the hip geometry estimates changes and 45% in the TBS changes. Δregion-specific lean mass was the most consistent predictor of changes in aBMD outcomes (β = 0.591 to 0.696), followed by cycling participation (β = - 0.233 to - 0.262), swimming participation (β = - 0.315 to - 0.336) and ΔMVPA (β = 0.165). Cycling participation was the most consistent predictor of changes in hip geometry estimates (β = - 0.174 to - 0.268), followed by Δregion-specific lean mass (β = 0.587) and Δcardiorespiratory fitness (β = 0.253). Finally, cycling and swimming participation (β = - 0.347 to - 0.453), Δregion-specific lean mass (β = 0.848) and Δstature (β = 0.720) were predictors of change in TBS. CONCLUSIONS Changes in region-specific lean mass and the type of sport are the most consistent determinants of 12-month changes in aBMD, hip geometry estimates and TBS in adolescent male athletes. TRIAL REGISTRATION ISRCTN17982776.
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Affiliation(s)
- Esther Ubago-Guisado
- IGOID Research Group, University of Castilla-La Mancha, Avenida Carlos III s/n, 45071, Toledo, Spain
- Children's Health and Exercise Research Centre, Sport and Health Sciences, University of Exeter, 79 Heavitree Rd, Exeter, EX2 4TH, United Kingdom
| | - Dimitris Vlachopoulos
- Children's Health and Exercise Research Centre, Sport and Health Sciences, University of Exeter, 79 Heavitree Rd, Exeter, EX2 4TH, United Kingdom
| | - Ioannis G Fatouros
- School of Physical Education and Sport Sciences, Democritus University of Thrace, 69100, Komotini, Greece
| | - Chariklia K Deli
- School of Physical Education and Sport Sciences, University of Thessaly, Karies, 421 00, Trikala, Greece
| | - Diamanda Leontsini
- School of Physical Education and Sport Sciences, Democritus University of Thrace, 69100, Komotini, Greece
| | - Luis A Moreno
- GENUD Research Group, University of Zaragoza, C/Pedro Cerbuna 13, 50013, Zaragoza, Spain
| | - Daniel Courteix
- Laboratory of Metabolic Adaptations to Exercise in Physiological and Pathological conditions (AME2P), Université Clermont Auvergne, F-63000, Clermont-Ferrand, France
- Faculty of Health, School of Exercise Science, Australian Catholic University, 115 Victoria Parade Fitzroy, Victoria 3065, Australia
| | - Luis Gracia-Marco
- Children's Health and Exercise Research Centre, Sport and Health Sciences, University of Exeter, 79 Heavitree Rd, Exeter, EX2 4TH, United Kingdom.
- GENUD Research Group, University of Zaragoza, C/Pedro Cerbuna 13, 50013, Zaragoza, Spain.
- PROFITH "PROmoting FITness and Health Through Physical Activity" Research Group, Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Carretera de Alfacar s/n, 18011, Granada, Spain.
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