2.50
Hdl Handle:
http://hdl.handle.net/2436/7617
Title:
Longitudinal modeling of adiposity in periadolescent Greek schoolchildren.
Authors:
Koutedakis, Yiannis; Bouziotas, Constantin; Flouris, Andreas D.; Nelson, Paul N.
Abstract:
PURPOSE: Obesity has an etiology that is multidimensional in nature. Given the dearth of longitudinal data, we examined changes in adipose tissue (Ad) in relation to physical activity levels (PA), aerobic fitness (AF), and energy intake (EI) in Greek schoolchildren, as they progressed from age 12 to 14 yr. METHODS: This was a 2-yr and three-time-point (TP) study. Participants (N=210 (TP1); =204 (TP2); =198 (TP3)) were assessed for anthropometry, maturity status, Ad, PA, AF, and EI. Mean values were used for exploratory analyses, whereas two generalized estimating equations (GEE) models examined for longitudinal associations between the studied parameters. The first (GEE1) aimed to extract inherent associations between the dependent (Ad) and independent (PA, AF, EI) variables for the entire study period. For further evidence of association, the second analysis (GEE2) used the independent variables at TP1 and TP2 to predict the dependent variables at TP3. RESULTS: Levels of Ad in boys decreased significantly (P<0.05) from TP1 to TP3, whereas the same variable demonstrated a nonsignificant increase (P>0.05) in girls. GEE1 revealed that longitudinal changes in Ad were significantly associated only with PA (beta=-0.16; P<0.001) and AF (beta=-0.09; P<0.05) for all schoolchildren. Similarly, GEE2 revealed that the main factors (at TP1 and TP2) predicting the development of Ad (at TP3) were PA (beta=-0.14; P<0.001) followed by AF (beta=-0.10; P<0.05). CONCLUSION: With respect to data presented, we established that longitudinal changes in Ad are mainly accompanied by changes in PA and, to a lesser extent, AF levels.
Citation:
Medicine and Science in Sports and Exercise, 37(12): 2070-2074
Publisher:
Lippincott Williams & Wilkins
Journal:
Medicine and Science in Sports and Exercise
Issue Date:
2005
URI:
http://hdl.handle.net/2436/7617
PubMed ID:
16331131
Additional Links:
http://direct.bl.uk/bld/PlaceOrder.do?UIN=181362090&ETOC=RN&from=searchengine
Submitted date:
2007-01-11
Type:
Article
Language:
en
ISSN:
0195-9131
Appears in Collections:
Sport, Exercise and Health Research Group; Exercise and Health

Full metadata record

DC FieldValue Language
dc.contributor.authorKoutedakis, Yiannis-
dc.contributor.authorBouziotas, Constantin-
dc.contributor.authorFlouris, Andreas D.-
dc.contributor.authorNelson, Paul N.-
dc.date.accessioned2007-01-18T12:21:51Z-
dc.date.available2007-01-18T12:21:51Z-
dc.date.issued2005-
dc.date.submitted2007-01-11-
dc.identifier.citationMedicine and Science in Sports and Exercise, 37(12): 2070-2074en
dc.identifier.issn0195-9131-
dc.identifier.pmid16331131-
dc.identifier.urihttp://hdl.handle.net/2436/7617-
dc.description.abstractPURPOSE: Obesity has an etiology that is multidimensional in nature. Given the dearth of longitudinal data, we examined changes in adipose tissue (Ad) in relation to physical activity levels (PA), aerobic fitness (AF), and energy intake (EI) in Greek schoolchildren, as they progressed from age 12 to 14 yr. METHODS: This was a 2-yr and three-time-point (TP) study. Participants (N=210 (TP1); =204 (TP2); =198 (TP3)) were assessed for anthropometry, maturity status, Ad, PA, AF, and EI. Mean values were used for exploratory analyses, whereas two generalized estimating equations (GEE) models examined for longitudinal associations between the studied parameters. The first (GEE1) aimed to extract inherent associations between the dependent (Ad) and independent (PA, AF, EI) variables for the entire study period. For further evidence of association, the second analysis (GEE2) used the independent variables at TP1 and TP2 to predict the dependent variables at TP3. RESULTS: Levels of Ad in boys decreased significantly (P<0.05) from TP1 to TP3, whereas the same variable demonstrated a nonsignificant increase (P>0.05) in girls. GEE1 revealed that longitudinal changes in Ad were significantly associated only with PA (beta=-0.16; P<0.001) and AF (beta=-0.09; P<0.05) for all schoolchildren. Similarly, GEE2 revealed that the main factors (at TP1 and TP2) predicting the development of Ad (at TP3) were PA (beta=-0.14; P<0.001) followed by AF (beta=-0.10; P<0.05). CONCLUSION: With respect to data presented, we established that longitudinal changes in Ad are mainly accompanied by changes in PA and, to a lesser extent, AF levels.en
dc.format.extent136541 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherLippincott Williams & Wilkinsen
dc.relation.urlhttp://direct.bl.uk/bld/PlaceOrder.do?UIN=181362090&ETOC=RN&from=searchengine-
dc.subjectAdipose Tissueen
dc.subjectAnthropometryen
dc.subjectSex maturationen
dc.subjectPhysical Fitnessen
dc.subjectExerciseen
dc.subjectCaloric intakeen
dc.subjectLongitudinal studyen
dc.subjectObesityen
dc.titleLongitudinal modeling of adiposity in periadolescent Greek schoolchildren.en
dc.typeArticleen
dc.identifier.journalMedicine and Science in Sports and Exercise-
dc.format.digYES-

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