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Constable AM, Vlachopoulos D, Barker AR, Moore SA, Soininen S, Haapala EA, Väistö J, Westgate K, Brage S, Mahonen A, Lakka TA. The independent and interactive associations of physical activity intensity and vitamin D status with bone mineral density in prepubertal children: the PANIC Study. Osteoporos Int 2021; 32:1609-1620. [PMID: 33547487 DOI: 10.1007/s00198-021-05872-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 02/01/2021] [Indexed: 01/12/2023]
Abstract
UNLABELLED It is unclear how physical activity intensity and vitamin D status are related to bone health in prepubertal children. We found positive associations between vitamin D status and moderate-to-vigorous physical activity with bone in boys and girls. This highlights the importance of lifestyle factors for skeletal health prepuberty. INTRODUCTION The sex-specific independent and interactive associations of physical activity (PA) intensity and serum 25-hydroxyvitamin D (25(OH)D) levels with areal bone mineral density (aBMD) were investigated in prepubertal children. METHODS The participants were 366 prepubertal Finnish children (190 boys, 176 girls) aged 6-8 years. Linear regression analysed the associations of sedentary time (ST), light PA (LPA), moderate PA (MPA), moderate-to-vigorous PA (MVPA) and vigorous PA (VPA) measured by accelerometery, and serum 25(OH)D with total body less head (TBLH) and lower-limb aBMD, measured by dual-energy X-ray absorptiometry. RESULTS There was no interaction between PA intensity or serum 25(OH)D and sex with aBMD. MPA and MVPA were positively associated with TBLH and lower-limb aBMD (β = 0.11, 95% CI 0.02-0.20, p = 0.01). Serum 25(OH)D was positively associated with TBLH and lower-limb aBMD (β = 0.09, 95% CI 0.01-0.18, p = 0.03). There were no interactions between PA intensity and serum 25(OH)D with aBMD. CONCLUSION Vitamin D status, MPA and MVPA levels in active prepubertal children were positively associated with aBMD. The influence of MVPA is due to the MPA component, though our findings regarding the role of VPA should be interpreted with caution, as shorter accelerometer epochs are needed to more accurately assess VPA. This study adds evidence to the promotion of MPA and behaviours to encourage optimal vitamin D status in supporting skeletal health in childhood, though these need not be used in conjunction to be beneficial, and a sex-specific approach is not necessary in prepubertal children. TRIAL REGISTRATION NUMBER NCT01803776 . Date of registration: 4/03/2013.
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Affiliation(s)
- A M Constable
- Children's Health and Exercise Research Centre, University of Exeter, Exeter, UK
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - D Vlachopoulos
- Children's Health and Exercise Research Centre, University of Exeter, Exeter, UK.
| | - A R Barker
- Children's Health and Exercise Research Centre, University of Exeter, Exeter, UK
| | - S A Moore
- School of Health and Human Performance, Dalhousie University, Halifax, Canada
| | - S Soininen
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
- Social and Health Center, Varkaus, Finland
| | - E A Haapala
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
- Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - J Väistö
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - K Westgate
- MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - S Brage
- MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - A Mahonen
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
| | - T A Lakka
- Institute of Biomedicine, University of Eastern Finland, Kuopio, Finland
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Veijalainen A, Tompuri T, Haapala EA, Viitasalo A, Lintu N, Väistö J, Laitinen T, Lindi V, Lakka TA. Associations of cardiorespiratory fitness, physical activity, and adiposity with arterial stiffness in children. Scand J Med Sci Sports 2015. [PMID: 26220100 DOI: 10.1111/sms.12523] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Associations of cardiorespiratory fitness (CRF), physical activity (PA), sedentary behavior, and body fat percentage (BF%) with arterial stiffness and dilation capacity were investigated in 160 prepubertal children (83 girls) 6-8 years of age. We assessed CRF (watts/lean mass) by maximal cycle ergometer exercise test, total PA, structured exercise, unstructured PA, commuting to and from school, recess PA and total and screen-based sedentary behavior by questionnaire, BF% using dual-energy X-ray absorptiometry, and arterial stiffness and dilation capacity using pulse contour analysis. Data were adjusted for sex and age. Poorer CRF (standardized regression coefficient β = -0.297, P < 0.001), lower unstructured PA (β = -0.162, P = 0.042), and higher BF% (β = 0.176, P = 0.044) were related to higher arterial stiffness. When CRF, unstructured PA, and BF% were in the same model, only CRF was associated with arterial stiffness (β = -0.246, P = 0.006). Poorer CRF was also related to lower arterial dilation capacity (β = 0.316, P < 0.001). Children with low CRF (< median) and high BF% (≥ median; P = 0.002), low CRF and low unstructured PA (< median; P = 0.006) or children with low unstructured PA and high BF% (P = 0.005) had higher arterial stiffness than children in the opposite halves of these variables. Poor CRF was independently associated with increased arterial stiffness and impaired arterial dilation capacity among children.
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Affiliation(s)
- A Veijalainen
- Institute of Biomedicine/Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - T Tompuri
- Institute of Biomedicine/Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland.,Department of Clinical Physiology and Nuclear Medicine, Kuopio University Hospital, Kuopio, Finland
| | - E A Haapala
- Institute of Biomedicine/Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - A Viitasalo
- Institute of Biomedicine/Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland.,Institute of Dentistry, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - N Lintu
- Institute of Biomedicine/Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - J Väistö
- Institute of Biomedicine/Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland.,Institute of Dentistry, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - T Laitinen
- Department of Clinical Physiology and Nuclear Medicine, Kuopio University Hospital, Kuopio, Finland.,Department of Clinical Physiology and Nuclear Medicine, University of Eastern Finland, Kuopio, Finland
| | - V Lindi
- Institute of Biomedicine/Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - T A Lakka
- Institute of Biomedicine/Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland.,Department of Clinical Physiology and Nuclear Medicine, Kuopio University Hospital, Kuopio, Finland.,Kuopio Research Institute of Exercise Medicine, Kuopio, Finland
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