Accelerometer Response to Physical Activity Intensity in Normal-Weight Versus Overweight African American Children

2011 ◽  
Vol 8 (5) ◽  
pp. 682-692 ◽  
Author(s):  
Daniel Arvidsson ◽  
Mark Fitch ◽  
Mark L. Hudes ◽  
Catrine Tudor-Locke ◽  
Sharon E. Fleming
Keyword(s):  
Physical Activity ◽  
African American ◽  
Weight Status ◽  
Normal Weight ◽  
Fat Free Mass ◽  
African American Children ◽  
Overweight Children ◽  
Physical Activity Intensity ◽  
Activity Intensity ◽  
American Children

Background:Different movement efficiency in overweight children may affect accelerometer output data. The purpose was to investigate the ability of accelerometers to assess physical activity intensity and number of steps in normal-weight compared with overweight children.Methods:Eleven normal-weight and 14 overweight African American children walked at 2, 4, 5, and 6 km/h on a treadmill wearing Lifecorder, ActiGraph, RT3, and Biotrainer. Oxygen uptake was measured and steps manually counted. Fat free mass (FFM) was assessed from bioelectrical impedance analysis. Accelerometer counts and the individual linear regression lines of accelerometer counts versus VO2/FFM were evaluated, together with steps recorded by Lifecorder and Actigraph.Results:Correlations between accelerometer counts and VO2/FFM for all monitors were r ≥ .95 (P < .01). The accelerometer counts and their relationship to VO2/FFM did not generally differ significantly by body weight status. Lifecorder and Actigraph underestimated steps at 4, 5, and 6 km/h by less than 9%, but the error was up to −95% at 2 km/h.Conclusions:All 4 accelerometers show high ability to assess physical activity intensity, and can be used to compare physical activity between normal-weight and overweight children. The Lifecorder and the ActiGraph showed high accuracy in assessing steps, providing speed of movement exceeded 2 km/h.

scholarly journals Weight Status Associations With Physical Activity Intensity and Physical Self-Perceptions in 10- to 11-Year-Old Children

2012 ◽  
Vol 24 (1) ◽  
pp. 100-112 ◽  
Author(s):  
Stuart J. Fairclough ◽  
Lynne M. Boddy ◽  
Nicola D. Ridgers ◽  
Gareth Stratton
Keyword(s):  
Physical Activity ◽  
Socioeconomic Status ◽  
Physical Condition ◽  
Weight Status ◽  
Vigorous Physical Activity ◽  
Normal Weight ◽  
Physical Activity Intensity ◽  
Self Perceptions ◽  
Body Attractiveness ◽  
Activity Intensity

The study examined associations between children’s weight status, physical activity intensity, and physical self-perceptions. Data were obtained from 409 children (224 girls) aged 10–11 years categorized as normal-weight or overweight/obese. Physical activity was assessed using accelerometry, and children completed the Physical Self-Perception Profile. After controlling for the effects of age, maturation, and socioeconomic status vigorous physical activity was significantly associated with normal-weight status among boys (OR = 1.13, p = .01) and girls (OR = 1.13, p = .03). Normal-weight status was significantly associated with perceived Physical Condition (Boys: OR = 5.05, p = .008; Girls: OR = 2.50, p = .08), and Body Attractiveness (Boys: OR = 4.44, p = .007; Girls: OR = 2.56, p = .02). Weight status of 10–11 year old children was significantly associated with time spent in vigorous physical activity and self-perceptions of Body Attractiveness and Physical Condition.

Accuracy of Multisensor Activity Monitors in Normal Versus High BMI African American Children

2011 ◽  
Vol 8 (8) ◽  
pp. 1124-1134 ◽  
Author(s):  
Daniel Arvidsson ◽  
Mark Fitch ◽  
Mark L. Hudes ◽  
Sharon E. Fleming
Keyword(s):  
African American ◽  
Energy Expenditure ◽  
Indirect Calorimetry ◽  
Normal Weight ◽  
The Other ◽  
African American Children ◽  
Overweight Children ◽  
Activity Monitors ◽  
American Children ◽  
High Bmi

Background:Overweight children show different movement patterns during walking than normal-weight children, suggesting the accuracy of multisensory activity monitors may differ in these groups.Methods:Eleven normal and 15 high BMI African American children walked at 2, 4, 5, and 6 km/h on a treadmill wearing the Intelligent Device for Energy Expenditure and Activity (IDEEA) and SenseWear (SW). Accuracy was determined using indirect calorimetry and manually counted steps as references.Results:For IDEEA, no significant differences in accuracy were observed between BMI groups for energy expenditure (EE), but differences were significant by speed (+15% at 2 km/h to −10% at 6 km/h). For SW, EE accuracy was significantly different for high (+21%) versus normal BMI girls (−13%) at 2 km/h. For high BMI girls, EE was overestimated at low speed and underestimated at higher speeds. Underestimations in steps did not differ by BMI group at 4 to 6 km/h, but were significantly larger at 2 km/h than at the other speeds for all groups with IDEEA, and for normal BMI children with SW.Conclusions:Similar accuracies during walking may be expected in normal and overweight children using IDEEA and SW. Both monitors showed small errors for steps provided speed exceeded 2 km/h.

The Concurrent Validity of the 3-Day Physical Activity Recall in Australian Youth

2015 ◽  
Vol 27 (2) ◽  
pp. 262-267 ◽  
Author(s):  
James Dollman ◽  
Rebecca Stanley ◽  
Andrew Wilson
Keyword(s):  
Physical Activity ◽  
Weight Status ◽  
Vigorous Physical Activity ◽  
Population Level ◽  
Normal Weight ◽  
Self Report ◽  
Physical Activity Intensity ◽  
Weight Category ◽  
Activity Intensity ◽  
Physical Activity Recall

Valid measurement of youth physical activity is important and self-report methods provide convenient assessments at the population level. There is evidence that the validity of physical activity self-report varies by weight category. The aim of this study was to assess the validity of the 3-Day Physical Activity Recall (3DPAR), separately between normal weight and overweight/obese Australian youth. Accelerometer-derived physical activity variables were compared with 3DPAR variables in 155 (77 females) 11- to 14-year-olds from Adelaide, South Australia. In the whole sample, validity coefficients for self-reported moderate and moderate to vigorous physical activity were modest (rs = 0.12-0.31) and similar across gender and weight status categories. Validity coefficients for self-reported vigorous physical activity were much stronger (rs = 0.59-0.73) among overweight/obese than among normal weight participants. The validity of the 3DPAR in this study was low in the whole sample but varied according to physical activity intensity and the weight status of the child. Specifically, the 3DPAR may be appropriate for describing vigorous intensity physical activity among overweight and obese youth.

Playground Characteristics to Encourage Children to Visit and Play

2013 ◽  
Vol 10 (8) ◽  
pp. 1201-1208 ◽  
Author(s):  
Jack L. Nasar ◽  
Christopher H. Holloman
Keyword(s):  
Physical Activity ◽  
African American ◽  
Multidimensional Scaling ◽  
Nonmetric Multidimensional Scaling ◽  
African American Children ◽  
Surface Study ◽  
American Children ◽  
The One ◽  
Children's Activities ◽  
Similarity Scores

Background:The research sought to find the salient perceived characteristics of playgrounds for African-American children and their parents, and to test effects of changes in those characteristics on playground choice.Methods:Thirty-one African-American children and their parents sorted 15 photographs of playgrounds for similarity. Nonmetric multidimensional scaling on the similarity scores and correlations between the resulting dimensions and judged characteristics of each playground revealed salient perceived characteristics. Study 2 had 40 African-American children and their parents view pairs of photographs, manipulated on the salient characteristics, and pick the one to play on (child question) or for the child to play on (parent question). A third study inventoried and observed children’s activities in 14 playgrounds.Results:Study 1 found seats, fence, playground type, and softness of surface as salient perceived characteristics of the playground. Study 2 found that participants were more likely to pick playgrounds with equipment and playgrounds with a softer surface. Study 3 found higher levels of physical activity for playground settings with equipment.Conclusions:The findings confirm correlational findings on the desirability of equipment and safety. Communities need to test the effects of changes in playgrounds.

Physical Activity During Soccer and Its Contribution to Physical Activity Recommendations in Normal Weight and Overweight Children

2011 ◽  
Vol 23 (2) ◽  
pp. 281-292 ◽  
Author(s):  
Jennifer M. Sacheck ◽  
Tara Nelson ◽  
Laura Ficker ◽  
Tamar Kafka ◽  
Julia Kuder ◽  
...  
Keyword(s):  
Physical Activity ◽  
Sports Participation ◽  
Normal Weight ◽  
Physical Activity Intensity ◽  
Sedentary Activity ◽  
Organized Sport ◽  
Obesity Epidemic ◽  
Activity Intensity ◽  
Physical Activity Recommendations ◽  
Activity Recommendations

Amid the childhood obesity epidemic, understanding how organized sports participation contributes to meeting physical activity recommendations in children is important. Anthropometrics were measured in children (n = 111; 68% female, 9.1 ± 0.8yr) before one 50-min soccer match. Time spent at different physical activity intensity levels was examined using Actigraph accelerometers. 49% of the match time was spent in sedentary activity (25.4 ± 5.7 min), while 33% of the match (16.9 ± 4.7 min) was spent in moderate-to-vigorous activity (MVPA; p < .001). 22.5% of the children were overweight/obese and spent more time in sedentary activity (+3.2 ± 1.2 min; p < .05) and less time in MVPA (-3.0 ± 1.0 min; p < .01) compared with the normal weight children. These data demonstrate that playing an organized sport such as soccer only meets a portion (~25%) of the 60 min of MVPA recommended and even less of this recommendation is met by overweight/obese children.

Insulin and Weight Status in Adolescents: Independent Effects of Intensity of Physical Activity and Peak Aerobic Power

2008 ◽  
Vol 20 (1) ◽  
pp. 29-39 ◽  
Author(s):  
Daniela A. Rubin ◽  
Robert G. McMurray ◽  
Joanne S. Harrell
Keyword(s):  
Physical Activity ◽  
Weight Status ◽  
Aerobic Power ◽  
Vigorous Physical Activity ◽  
Normal Weight ◽  
Habitual Physical Activity ◽  
Fat Free Mass ◽  
Fasting Insulin ◽  
Overweight Adolescents ◽  
Independent Effects

Differences in insulin concentrations between normal weight or overweight adolescents (n = 437) were determined depending on their habitual physical activity (PA) and aerobic power (pVO2max). Tertiles were computed for PA (survey) and pVO2max (submaximal predicted cycle test). Independent of their weight, adolescents in the upper 2 tertiles for vigorous PA had lower insulin concentrations than those in the bottom tertile (p < .05). Adolescents in the top tertile for pVO2max expressed per kg fat-free mass also had lower insulin concentrations than those in the medium and bottom tertiles (p = .002). In youth, vigorous physical activity and aerobic power are associated with fasting insulin independent of weight status.

Perceptions of Food Intake, Physical Activity, and Obesity Among African-American Children in the Lower Mississippi Delta

2015 ◽  
Vol 31 (4) ◽  
pp. 333-335 ◽  
Author(s):  
Bernestine B. McGee ◽  
Valerie Richardson ◽  
Glenda Johnson ◽  
Crystal Johnson
Keyword(s):  
Physical Activity ◽  
African American ◽  
Food Intake ◽  
Focus Group ◽  
Physical Inactivity ◽  
Mississippi Delta ◽  
Healthy Lifestyle ◽  
African American Children ◽  
Environmental Determinants ◽  
American Children

Purpose. To explore the nutrition and physical activity perceptions of children for planning a healthy weight curriculum to address childhood obesity in African-American children living in the Lower Mississippi Delta (LMD). Design. Six children’s focus group sessions. Setting. Two Louisiana parishes in the LMD. Subjects. Seventy 8- to 13-year-old African-American children, 46 (66%) females and 24 (44%) males, participated in the focus group sessions. Measures. Interview questions were based on personal and environmental determinants and content and strategies for a healthy lifestyle program for children. Analysis. Focus group discussions were audio recorded and transcribed, observer recorded, and analyzed to identify recurring trends and patterns among focus groups. Content analysis consisted of coding focus group transcripts for recurrent themes and review of data by an independent reviewer to confirm the themes. Results. Emerging themes were categorized as healthy lifestyle opinions within the social cognitive theory constructs of personal and environmental determinants and curriculum content. Conclusion. LMD youth recognized a healthy eating pattern and that overweight and obesity result from poor eating habits and physical inactivity. Children’s food intake pattern did not reflect this understanding, suggesting a need for culturally tailoring an intervention to impact the poor food intake and physical inactivity in two low-income African-American Delta communities.

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