Suboptimal bone status for adolescents with low motor competence and developmental coordination disorder-It's sex specific

Paola Chivers, Timo Rantalainen, Fleur McIntyre, Beth Hands, Benjamin Weeks, Belinda Beck, Sophia Nimphius, Nicolas Hart, Aris Siafarikas

Research output: Contribution to journalArticle

Abstract

Background: Australian adolescents with low motor competence (LMC) have higher fracture rates and poorer bone health compared to European normative data, but currently no normative data exists for Australians.

Aims: To examine whether there were bone health differences in Australian adolescents with LMC or Developmental Coordination Disorder (DCD) when compared to typically developing age-matched Australian adolescents.

Methods and Procedures: Australian adolescents aged 12-18 years with LMC/DCD (n = 39; male = 27; female = 12) and an Australian comparison sample (n = 188; boys = 101; girls = 87) undertook radial and tibial peripheral Quantitative Computed Tomography (pQCT) scans. Stress Strain Index (SSI (mm(3))), Total Bone Area (TBA (mm(2))), Muscle Density (MuD [mgcm(3)]), Muscle Area (MuA [cm(2)]), Subcutaneous Fat Area (ScFA [cm(2)]), Cortical Density (CoD [mgcm(3)]), Cortical Area (CoD [mm(2)]), cortical concentric ring volumetric densities, Functional Muscle Bone Unit Index (FMBU: (SSI/bone length)) and Robustness Index (SSI/bone length (3), group and sex differences were examined.

Outcome and Results: The main finding was a significant sex-x-group interaction for Tibial FMBU (p =.021), Radial MuD (p =.036), and radial ScFA (p =.002). Boys with LMC/DCD had lower tibial FMBU scores, radial MuD and higher ScFA than the typically developing age-matched sample.

Conclusion and Implications: Comparisons of bone measures with Australian comparative data are similar to European findings however sex differences were found in the present study. Australian adolescent boys with LMC/DCD had less robust bones compared to their well-coordinated Australian peers, whereas there were no differences between groups for girls. These differences may be due to lower levels of habitual weight bearing physical activity, which may be more distinct in adolescent boys with LMC/DCD compared to girls.

Original languageEnglish
Pages (from-to)57-65
Number of pages9
JournalResearch in Developmental Disabilities
Volume84
DOIs
Publication statusPublished - Jan 2019

Cite this

Chivers, Paola ; Rantalainen, Timo ; McIntyre, Fleur ; Hands, Beth ; Weeks, Benjamin ; Beck, Belinda ; Nimphius, Sophia ; Hart, Nicolas ; Siafarikas, Aris. / Suboptimal bone status for adolescents with low motor competence and developmental coordination disorder-It's sex specific. In: Research in Developmental Disabilities. 2019 ; Vol. 84. pp. 57-65.
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abstract = "Background: Australian adolescents with low motor competence (LMC) have higher fracture rates and poorer bone health compared to European normative data, but currently no normative data exists for Australians.Aims: To examine whether there were bone health differences in Australian adolescents with LMC or Developmental Coordination Disorder (DCD) when compared to typically developing age-matched Australian adolescents.Methods and Procedures: Australian adolescents aged 12-18 years with LMC/DCD (n = 39; male = 27; female = 12) and an Australian comparison sample (n = 188; boys = 101; girls = 87) undertook radial and tibial peripheral Quantitative Computed Tomography (pQCT) scans. Stress Strain Index (SSI (mm(3))), Total Bone Area (TBA (mm(2))), Muscle Density (MuD [mgcm(3)]), Muscle Area (MuA [cm(2)]), Subcutaneous Fat Area (ScFA [cm(2)]), Cortical Density (CoD [mgcm(3)]), Cortical Area (CoD [mm(2)]), cortical concentric ring volumetric densities, Functional Muscle Bone Unit Index (FMBU: (SSI/bone length)) and Robustness Index (SSI/bone length (3), group and sex differences were examined.Outcome and Results: The main finding was a significant sex-x-group interaction for Tibial FMBU (p =.021), Radial MuD (p =.036), and radial ScFA (p =.002). Boys with LMC/DCD had lower tibial FMBU scores, radial MuD and higher ScFA than the typically developing age-matched sample.Conclusion and Implications: Comparisons of bone measures with Australian comparative data are similar to European findings however sex differences were found in the present study. Australian adolescent boys with LMC/DCD had less robust bones compared to their well-coordinated Australian peers, whereas there were no differences between groups for girls. These differences may be due to lower levels of habitual weight bearing physical activity, which may be more distinct in adolescent boys with LMC/DCD compared to girls.",
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Suboptimal bone status for adolescents with low motor competence and developmental coordination disorder-It's sex specific. / Chivers, Paola; Rantalainen, Timo; McIntyre, Fleur; Hands, Beth; Weeks, Benjamin; Beck, Belinda; Nimphius, Sophia; Hart, Nicolas; Siafarikas, Aris.

In: Research in Developmental Disabilities, Vol. 84, 01.2019, p. 57-65.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Suboptimal bone status for adolescents with low motor competence and developmental coordination disorder-It's sex specific

AU - Chivers, Paola

AU - Rantalainen, Timo

AU - McIntyre, Fleur

AU - Hands, Beth

AU - Weeks, Benjamin

AU - Beck, Belinda

AU - Nimphius, Sophia

AU - Hart, Nicolas

AU - Siafarikas, Aris

PY - 2019/1

Y1 - 2019/1

N2 - Background: Australian adolescents with low motor competence (LMC) have higher fracture rates and poorer bone health compared to European normative data, but currently no normative data exists for Australians.Aims: To examine whether there were bone health differences in Australian adolescents with LMC or Developmental Coordination Disorder (DCD) when compared to typically developing age-matched Australian adolescents.Methods and Procedures: Australian adolescents aged 12-18 years with LMC/DCD (n = 39; male = 27; female = 12) and an Australian comparison sample (n = 188; boys = 101; girls = 87) undertook radial and tibial peripheral Quantitative Computed Tomography (pQCT) scans. Stress Strain Index (SSI (mm(3))), Total Bone Area (TBA (mm(2))), Muscle Density (MuD [mgcm(3)]), Muscle Area (MuA [cm(2)]), Subcutaneous Fat Area (ScFA [cm(2)]), Cortical Density (CoD [mgcm(3)]), Cortical Area (CoD [mm(2)]), cortical concentric ring volumetric densities, Functional Muscle Bone Unit Index (FMBU: (SSI/bone length)) and Robustness Index (SSI/bone length (3), group and sex differences were examined.Outcome and Results: The main finding was a significant sex-x-group interaction for Tibial FMBU (p =.021), Radial MuD (p =.036), and radial ScFA (p =.002). Boys with LMC/DCD had lower tibial FMBU scores, radial MuD and higher ScFA than the typically developing age-matched sample.Conclusion and Implications: Comparisons of bone measures with Australian comparative data are similar to European findings however sex differences were found in the present study. Australian adolescent boys with LMC/DCD had less robust bones compared to their well-coordinated Australian peers, whereas there were no differences between groups for girls. These differences may be due to lower levels of habitual weight bearing physical activity, which may be more distinct in adolescent boys with LMC/DCD compared to girls.

AB - Background: Australian adolescents with low motor competence (LMC) have higher fracture rates and poorer bone health compared to European normative data, but currently no normative data exists for Australians.Aims: To examine whether there were bone health differences in Australian adolescents with LMC or Developmental Coordination Disorder (DCD) when compared to typically developing age-matched Australian adolescents.Methods and Procedures: Australian adolescents aged 12-18 years with LMC/DCD (n = 39; male = 27; female = 12) and an Australian comparison sample (n = 188; boys = 101; girls = 87) undertook radial and tibial peripheral Quantitative Computed Tomography (pQCT) scans. Stress Strain Index (SSI (mm(3))), Total Bone Area (TBA (mm(2))), Muscle Density (MuD [mgcm(3)]), Muscle Area (MuA [cm(2)]), Subcutaneous Fat Area (ScFA [cm(2)]), Cortical Density (CoD [mgcm(3)]), Cortical Area (CoD [mm(2)]), cortical concentric ring volumetric densities, Functional Muscle Bone Unit Index (FMBU: (SSI/bone length)) and Robustness Index (SSI/bone length (3), group and sex differences were examined.Outcome and Results: The main finding was a significant sex-x-group interaction for Tibial FMBU (p =.021), Radial MuD (p =.036), and radial ScFA (p =.002). Boys with LMC/DCD had lower tibial FMBU scores, radial MuD and higher ScFA than the typically developing age-matched sample.Conclusion and Implications: Comparisons of bone measures with Australian comparative data are similar to European findings however sex differences were found in the present study. Australian adolescent boys with LMC/DCD had less robust bones compared to their well-coordinated Australian peers, whereas there were no differences between groups for girls. These differences may be due to lower levels of habitual weight bearing physical activity, which may be more distinct in adolescent boys with LMC/DCD compared to girls.

KW - Adolescents

KW - Australian

KW - Bone

KW - Developmental coordination disorder

KW - Low motor competence

KW - Sex differences

KW - Peripheral Quantitative Computed Tomography (pQCT)

KW - QUANTITATIVE COMPUTED-TOMOGRAPHY

KW - PHYSICAL-ACTIVITY

KW - MINERAL DENSITY

KW - CORTICAL BONE

KW - YOUNG-ADULTS

KW - IMPACT ACTIVITY

KW - CHILDREN

KW - HEALTH

KW - PQCT

KW - MASS

U2 - 10.1016/j.ridd.2018.07.010

DO - 10.1016/j.ridd.2018.07.010

M3 - Article

VL - 84

SP - 57

EP - 65

JO - Research in Developmental Disabilities

JF - Research in Developmental Disabilities

SN - 0891-4222

ER -