Light-Intensity Physical Activity and Cardiometabolic Biomarkers in US Adolescents
Background: The minimal physical activity intensity that would confer health benefits among adolescents is unknown. The purpose of this study was to examine the associations of accelerometer-derived light-intensity (split into low and high) physical activity, and moderate- to vigorous-intensity phys...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Published: |
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/47930 |
| _version_ | 1848757969776279552 |
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| author | Carson, V. Ridgers, N. Howard, B. Winkler, E. Healy, Genevieve Owen, N. Dunstan, D. Salmon, J. |
| author_facet | Carson, V. Ridgers, N. Howard, B. Winkler, E. Healy, Genevieve Owen, N. Dunstan, D. Salmon, J. |
| author_sort | Carson, V. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Background: The minimal physical activity intensity that would confer health benefits among adolescents is unknown. The purpose of this study was to examine the associations of accelerometer-derived light-intensity (split into low and high) physical activity, and moderate- to vigorous-intensity physical activity with cardiometabolic biomarkers in a large population-based sample. Methods: The study is based on 1,731 adolescents, aged 12-19 years from the 2003/04 and 2005/06 National Health and Nutrition Examination Survey. Low light-intensity activity (100-799 counts/min), high light-intensity activity (800 counts/min to <4 METs) and moderate- to vigorous-intensity activity (≥4 METs, Freedson age-specific equation) were accelerometer-derived. Cardiometabolic biomarkers, including waist circumference, systolic blood pressure, diastolic blood pressure, HDL-cholesterol, and C-reactive protein were measured. Triglycerides, LDL- cholesterol, insulin, glucose, and homeostatic model assessments of ß-cell function (HOMA-%B) and insulin sensitivity (HOMA-%S) were also measured in a fasting sub-sample (n=807).Results: Adjusted for confounders, each additional hour/day of low light-intensity activity was associated with 0.59 (95% CI: 1.18-0.01) mmHG lower diastolic blood pressure. Each additional hour/day of high light-intensity activity was associated with 1.67 (2.94-0.39) mmHG lower diastolic blood pressure and 0.04 (0.001-0.07) mmol/L higher HDL-cholesterol. Each additional hour/day of moderate- to vigorous-intensity activity was associated with 3.54 (5.73-1.35) mmHG lower systolic blood pressure, 5.49 (1.11-9.77)% lower waist circumference, 25.87 (6.08-49.34)% lower insulin, and 16.18 (4.92-28.53)% higher HOMA-%S.Conclusions: Time spent in low light-intensity physical activity and high light-intensity physical activity had some favorable associations with biomarkers. Consistent with current physical activity recommendations for adolescents, moderate- to vigorous-intensity activity had favorable associations with many cardiometabolic biomarkers. While increasing MVPA should still be a public health priority, further studies are needed to identify dose-response relationships for light-intensity activity thresholds to inform future recommendations and interventions for adolescents. |
| first_indexed | 2025-11-14T09:36:32Z |
| format | Journal Article |
| id | curtin-20.500.11937-47930 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:36:32Z |
| publishDate | 2013 |
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| spelling | curtin-20.500.11937-479302017-09-13T14:17:43Z Light-Intensity Physical Activity and Cardiometabolic Biomarkers in US Adolescents Carson, V. Ridgers, N. Howard, B. Winkler, E. Healy, Genevieve Owen, N. Dunstan, D. Salmon, J. Background: The minimal physical activity intensity that would confer health benefits among adolescents is unknown. The purpose of this study was to examine the associations of accelerometer-derived light-intensity (split into low and high) physical activity, and moderate- to vigorous-intensity physical activity with cardiometabolic biomarkers in a large population-based sample. Methods: The study is based on 1,731 adolescents, aged 12-19 years from the 2003/04 and 2005/06 National Health and Nutrition Examination Survey. Low light-intensity activity (100-799 counts/min), high light-intensity activity (800 counts/min to <4 METs) and moderate- to vigorous-intensity activity (≥4 METs, Freedson age-specific equation) were accelerometer-derived. Cardiometabolic biomarkers, including waist circumference, systolic blood pressure, diastolic blood pressure, HDL-cholesterol, and C-reactive protein were measured. Triglycerides, LDL- cholesterol, insulin, glucose, and homeostatic model assessments of ß-cell function (HOMA-%B) and insulin sensitivity (HOMA-%S) were also measured in a fasting sub-sample (n=807).Results: Adjusted for confounders, each additional hour/day of low light-intensity activity was associated with 0.59 (95% CI: 1.18-0.01) mmHG lower diastolic blood pressure. Each additional hour/day of high light-intensity activity was associated with 1.67 (2.94-0.39) mmHG lower diastolic blood pressure and 0.04 (0.001-0.07) mmol/L higher HDL-cholesterol. Each additional hour/day of moderate- to vigorous-intensity activity was associated with 3.54 (5.73-1.35) mmHG lower systolic blood pressure, 5.49 (1.11-9.77)% lower waist circumference, 25.87 (6.08-49.34)% lower insulin, and 16.18 (4.92-28.53)% higher HOMA-%S.Conclusions: Time spent in low light-intensity physical activity and high light-intensity physical activity had some favorable associations with biomarkers. Consistent with current physical activity recommendations for adolescents, moderate- to vigorous-intensity activity had favorable associations with many cardiometabolic biomarkers. While increasing MVPA should still be a public health priority, further studies are needed to identify dose-response relationships for light-intensity activity thresholds to inform future recommendations and interventions for adolescents. 2013 Journal Article http://hdl.handle.net/20.500.11937/47930 10.1371/journal.pone.0071417 unknown |
| spellingShingle | Carson, V. Ridgers, N. Howard, B. Winkler, E. Healy, Genevieve Owen, N. Dunstan, D. Salmon, J. Light-Intensity Physical Activity and Cardiometabolic Biomarkers in US Adolescents |
| title | Light-Intensity Physical Activity and Cardiometabolic Biomarkers in US Adolescents |
| title_full | Light-Intensity Physical Activity and Cardiometabolic Biomarkers in US Adolescents |
| title_fullStr | Light-Intensity Physical Activity and Cardiometabolic Biomarkers in US Adolescents |
| title_full_unstemmed | Light-Intensity Physical Activity and Cardiometabolic Biomarkers in US Adolescents |
| title_short | Light-Intensity Physical Activity and Cardiometabolic Biomarkers in US Adolescents |
| title_sort | light-intensity physical activity and cardiometabolic biomarkers in us adolescents |
| url | http://hdl.handle.net/20.500.11937/47930 |