scholarly journals Comparison of a Wearable Tracker with Actigraph for Classifying Physical Activity Intensity and Heart Rate in Children

2019 ◽  
Vol 16 (15) ◽  
pp. 2663
Author(s):  
Kang ◽  
Kim ◽  
Byun ◽  
Suk ◽  
Lee
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Validity And Reliability ◽  
Physical Activity Intensity ◽  
Intra Class Correlation ◽  
Activity Intensity ◽  
Research Grade ◽  
Vigorous Intensity ◽  
High Degree

Introduction: To examine the validity and reliability of the Fitbit Charge HR (FCH), wrist-worn ActiGraph (AG) accelerometers were used for assessing the classification of physical activity (PA) into intensity categories in children. Methods: Forty-three children (n = 43) participated in the study. Each participant completed 3 min bouts of 12 PAs ranging from sedentary to vigorous intensity while simultaneously wearing FCH and AG on both hands, a Polar HR monitor, and a portable indirect calorimeter. Total time spent in different PA intensity levels measured by FCH and AG were compared to the indirect calorimetry. Results: The highest classification accuracy values of sedentary behavior was 81.1% for FCH. The highest classification (72.4%) of light intensity PA was observed with Crouter’s algorithm from the non-dominant wrist. Crouter’s algorithm also show the highest classification (81.8%) for assessing moderate to vigorous intensity PA compared to FCH (70.8%). Across the devices, a high degree of reliability was found in step measurements, ranging from an intra-class correlation (ICC) = 0.92 to an ICC = 0.94. The reliability of the AG and the FCH showed high agreement for each variable. Conclusion: The FCH shows better validity for estimating sedentary behavior and similar validity for assessing moderate to vigorous PA compared to the research-grade monitor. Across the devices, the reliability showed the strongest association.

Perceived Exertion of Physical Activity During Pregnancy

2015 ◽  
Vol 12 (7) ◽  
pp. 1039-1043 ◽  
Author(s):  
Mallory R. Marshall ◽  
James M. Pivarnik
Keyword(s):  
Physical Activity ◽  
Perceived Exertion ◽  
Treadmill Exercise ◽  
Physical Activity Behavior ◽  
Rating Of Perceived Exertion ◽  
Moderate Intensity ◽  
Physical Activity Intensity ◽  
Time Points ◽  
Activity Intensity ◽  
Vigorous Intensity

Background:Maternal physical activity declines across gestation, possibly due to changing perception of physical activity intensity. Our purpose was to a) determine whether rating of perceived exertion (RPE) during a treadmill exercise changes at a given energy expenditure, and b) identify the influence of prepregnancy physical activity behavior on this relationship.Methods:Fifty-one subjects were classified as either exercisers (N = 26) or sedentary (N = 25). Participants visited our laboratory at 20 and 32 weeks gestation and at 12 weeks postpartum. At each visit, women performed 5 minutes of moderate and vigorous treadmill exercise; speed was self-selected. Heart rate (HR), oxygen consumption (VO2), and RPE were measured during the last minute at each treadmill intensity.Results:At moderate intensity, postpartum VO2 was higher compared with 20- or 32-week VO2, but there was no difference for HR or RPE. For vigorous intensity, postpartum HR and VO2 were higher than at 32 weeks, but RPE was not different at any time points.Conclusions:RPE does not differ by pregnancy time point at either moderate or vigorous intensity. However, relative to energy cost, physical activity was perceived to be more difficult at 32 weeks compared with other time points. Pregnant women, then, may compensate for physiological changes during gestation by decreasing walking/running speeds.

Influence of Movement Intensity and Physical Activity on Adiposity in Youth

2011 ◽  
Vol 8 (2) ◽  
pp. 164-173 ◽  
Author(s):  
Amy E. Mark ◽  
Ian Janssen
Keyword(s):  
Physical Activity ◽  
Activity Level ◽  
Physical Activity Intensity ◽  
Physically Active ◽  
Activity Intensity ◽  
Intensity Physical Activity ◽  
Vigorous Intensity ◽  
Total Fat ◽  
Total Body ◽  
Percentile Scores

Background:Despite the plethora of research examining the physical activity-adiposity relation in youth, questions remain regarding the ideal intensity. Therefore, the purpose of this study was to explore the independent effects of physical activity intensity and incidental movement on total and trunk adiposity.Methods:The sample consisted of 1165 youth aged 8 to 17 years from the 2003−04 U.S. National Health and Nutrition Examination Survey. Physical activity (low, moderate, vigorous intensity) and incidental movement (activity level when not physically active) were measured using Actigraph accelerometers over 7 days. Total body and trunk fat were measured using dual-energy X-ray absorptiometry; age- and sex-specific percentile scores were calculated.Results:Bivariate analyses revealed an inverse relation between total, low, moderate and vigorous intensity physical activity with total body and trunk fat. After consideration of the total volume of physical activity in the multivariate analyses, moderate-to-vigorous intensity physical activity remained significantly related to total and trunk fat. Participants with the highest (top 12.5%) moderate-to-vigorous intensity activity values had total fat percentile scores that were 34 points lower than participants with the lowest (bottom 25%) values.Conclusion:These results are consistent with public health guidelines which recommend that children and youth participate in moderate-to-vigorous intensity physical activity.

Physical activity intensity and subjective well-being in healthy adults

2017 ◽  
Vol 24 (9) ◽  
pp. 1257-1267 ◽  
Author(s):  
Gregory A Panza ◽  
Beth A Taylor ◽  
Paul D Thompson ◽  
C Michael White ◽  
Linda S Pescatello
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Well Being ◽  
Healthy Adults ◽  
Moderate Intensity ◽  
Subjective Well Being ◽  
Physical Activity Intensity ◽  
Psychological Well Being ◽  
Negatively Associated ◽  
Activity Intensity

The effect of physical activity intensity on subjective well-being has not been well established. We examined this relationship among 419 healthy adults using objective and subjective physical activity measurements (sample size varied among well-being assessments). For accelerometers, light-intensity physical activity positively associated with psychological well-being ( n = 150) and negatively associated with depression ( n = 99); moderate intensity negatively associated with pain severity ( n = 419) and positively associated with psychological well-being; sedentary behavior negatively associated with psychological well-being and positively associated with depression ( ps < .05). These findings were generally consistent with subjective measurements of physical activity (Question 8, Paffenbarger Questionnaire). Higher levels of sedentary behavior are associated with lower subjective well-being.

APPLICATION OF RECOMENDATIONS FOR THE CLASSIFICATION OF PHYSICAL ACTIVITY INTENSITY IN OBESE INDIVIDUALS

2002 ◽  
Vol 34 (5) ◽  
pp. S269
Author(s):  
W J. Wilkinson ◽  
C P. Earnest ◽  
A N. Jordan ◽  
G M. Morss ◽  
T S. Church ◽  
...  
Keyword(s):  
Physical Activity ◽  
Physical Activity Intensity ◽  
Activity Intensity

scholarly journals Determination of musculoskeletal system pain, physical activity intensity, and prolonged sitting of university students using smartphone

2019 ◽  
Vol 11 (1) ◽  
pp. 28-35 ◽  
Author(s):  
Sema Can ◽  
Ayda Karaca
Keyword(s):  
Physical Activity ◽  
University Students ◽  
Musculoskeletal System ◽  
Sitting Time ◽  
Categorical Variables ◽  
Physical Activity Intensity ◽  
Prolonged Sitting ◽  
Activity Intensity ◽  
Intensity Physical Activity ◽  
Vigorous Intensity

Abstract Study aim: The purpose of this study was to examine smartphone-using university students’ musculoskeletal system pain complaints, duration of smartphone and computer usage, participation in moderate-vigorous physical activities (MVPA), and prolonged sitting time.Material and methods: This study was conducted on Hitit University students (n = 387; 206 female, 181 male) in the province of Çorum. The International Physical Activity Questionnaire-Short Form (IPAQ-SF), the Physical Activity Assessment Ques­tionnaire (PAAQ) (sports/exercise activities section), and a personal information form prepared by the researchers were used as data collection tools. Descriptive statistics and the t-test were used to determine differences between groups. The Pearson chi-square test was used to examine the relationship between categorical variables.Results: It was observed that half of the participants with musculoskeletal system pain complaints (54.5%) feel the pain in all four areas (neck, shoulder, upper and lower back). There was no statistically significant relationship between physical activity intensity and pain complaint (p > 0.05). The students with musculoskeletal pain complaints spend more time on the smartphone and computer than students who do not have pain complaints (p < 0.05). During electronic device usage, the students who are in the low-intensity physical activity category spend more time sitting down than students in the moderate/vigorous intensity physical activity category (p < 0.05).Conclusions: In consequence, information can be provided about the importance of reducing sitting time during smartphone use and increasing the duration of moderate/vigorous-intensity physical activity (PA) so awareness can be raised on the issue among university students.

The Effect of the Presence of an Internet-Connected Mobile Tablet Computer on Physical Activity Behavior in Children

2018 ◽  
Vol 30 (1) ◽  
pp. 150-156 ◽  
Author(s):  
Mallory S. Kobak ◽  
Andrew Lepp ◽  
Michael J. Rebold ◽  
Hannah Faulkner ◽  
Shannon Martin ◽  
...  
Keyword(s):  
Physical Activity ◽  
Sedentary Behavior ◽  
Physical Activity Behavior ◽  
Mobile Internet ◽  
Tablet Computer ◽  
Physical Activity Intensity ◽  
Activity Intensity ◽  
Metabolic Equivalents ◽  
Activity Behavior ◽  
Sedentary Activities

Background: Mobile Internet-connected electronic devices provide access to activities that have traditionally been associated with sedentary behavior. Because they are portable, these devices can be utilized in any environment. Therefore, providing children with access to these devices in environments that typically promote physical activity may result in a reduction in physical activity behavior. Purpose: To assess children’s physical and sedentary (ie, sitting) activity with and without the presence of a mobile Internet-connected tablet computer. Methods: A total of 20 children [6.7 (1.9) y old] participated in 2 simulated recess conditions in a gymnasium on separate days. During each condition, children had free-choice access physical activity options and a table of sedentary activities for 40 minutes. During 1 session, the iPad was present, and in the other session, it was not. Physical activity was monitored via an accelerometer, and sedentary time was monitored via a stopwatch. Results: Children significantly (P ≤ .03) reduced average physical activity intensity and increased their sedentary behavior with the iPad present [4.4 (4.0) metabolic equivalents/min and 20.9 (12.4) min sitting] versus the condition without the iPad present [5.3 (4.0) metabolic equivalents/min and 13.6 (13.2) min sitting]. Conclusion: Introducing an mobile Internet-connected tablet computer into a gymnasium reduced children’s physical activity intensity by 17% and increased sedentary behavior by 54%.

Concurrent Validity of ActiGraph GT3X+ and Axivity AX3 Accelerometers for Estimating Physical Activity and Sedentary Behavior

2020 ◽  
pp. 1-8
Author(s):  
Leila Hedayatrad ◽  
Tom Stewart ◽  
Scott Duncan
Keyword(s):  
Physical Activity ◽  
Light Intensity ◽  
Sedentary Behavior ◽  
Concurrent Validity ◽  
Criterion Measure ◽  
Physical Activity Intensity ◽  
Body Postures ◽  
Activity Intensity ◽  
Lower Back ◽  
Sensitivity Specificity

Introduction: Accelerometers are commonly used to assess time-use behaviors related to physical activity, sedentary behavior, and sleep; however, as new accelerometer technologies emerge, it is important to ensure consistency with previous devices. This study aimed to evaluate the concurrent validity of the commonly used accelerometer, ActiGraph GT3X+, and the relatively new Axivity AX3 (fastened to the lower back) for detecting physical activity intensity and body postures when using direct observation as the criterion measure. Methods: A total of 41 children (aged 6–16 years) and 33 adults (aged 28–59 years) wore both monitors concurrently while performing 10 prescribed activities under laboratory conditions. The GT3X+ data were categorized into different physical activity intensity and posture categories using intensity-based cut points and ActiGraph proprietary inclinometer algorithms, respectively. The AX3 data were first converted to ActiGraph counts before being categorized into different physical activity intensity categories, while activity recognition models were used to detect the target postures. Sensitivity, specificity, and the balanced accuracy for intensity and posture category classification were calculated for each accelerometer. Differences in balanced accuracy between the devices and between children and adults were also calculated. Results: Both accelerometers obtained 74–96% balanced accuracy, with the AX3 performing slightly better (∼4% higher, p < .01) for detecting postures and physical activity intensity. Error in both devices was greatest when contrasting sitting/standing, sedentary/light intensity, and moderate/light intensity. Conclusion: In comparison with the GT3X+ accelerometer, AX3 was able to detect various postures and activity intensities with slightly higher balanced accuracy in children and adults.

scholarly journals Efecto de un programa de educación física con intensidad moderada vigorosa sobre el desarrollo motor en niños de preescolar (Effect of a physical education program with moderate-to-vigorous intensity on motor development in preschool children)

Retos ◽  
2020 ◽  
pp. 363-368
Author(s):  
Daniel Alejandro Piña Díaz ◽  
Paulina Yesica Ochoa-Martínez ◽  
Javier Arturo Hall-López ◽  
Zeltier Edier Reyes Castro ◽  
Edgar Ismael Alarcón Meza ◽  
...  
Keyword(s):  
Physical Activity ◽  
Physical Education ◽  
Motor Development ◽  
Education Program ◽  
Vigorous Physical Activity ◽  
Positive Influence ◽  
Fine Motor ◽  
Physical Activity Intensity ◽  
Activity Intensity ◽  
Vigorous Intensity

Objetivo: Efecto de un programa de educación física con intensidad moderada vigorosa sobre el desarrollo motor en niños de preescolar. Método: Participaron 20 alumnos de tercer grado de preescolar, 13 mujeres y 7 hombres, con una edad de 5.05±0.2 años, en un programa de educación física con intensidad moderada a vigorosa adaptado al modelo pedagógico CATCH (avance coordinado para la salud de los niños por sus siglas en inglés), las sesiones se llevaron a cabo 3 veces por semana, durante 12 semanas. La intensidad de la actividad física se determinó mediante el sistema para observar el tiempo de instrucción en la actividad física (SOFIT), antes y después del programa el desarrollo motor fue evaluado mediante el inventario de desarrollo Battelle valorando las variables de coordinación corporal, locomoción, motricidad fina y habilidad perceptiva, que determinan la puntuación de motricidad gruesa y fina. Resultados: La intensidad promedio de la actividad física moderada a vigorosa fue 65% del tiempo total de la clase de educación física, el análisis estadístico mediante el test t-Student para muestras relacionadas, reportó diferencias significativas en la puntuación de motricidad gruesa (p=0.00) y motricidad fina (p=0.00), antes y después de la intervención, el porcentaje de cambio resultó 25.5 Δ% y 11.3 Δ% respectivamente. Conclusión: a pesar que el programa CATCH reporta modestos resultados en variables asociadas a la obesidad en preescolares, su aplicación durante tres meses mostro una influencia positiva para la mejora del desarrollo motor en niños de edad preescolar. Abstract. Objective: To evaluate the effect of a physical education program with moderate-to-vigorous intensity on motor development in kindergarten students. Method: a total of 20 preschool students with average age of 5.05 ± 0.2 years old were involved (13 girls and 7 boys); they carried out a program of physical education at moderate-to-vigorous intensity, based on the pedagogical model of CATCH (Coordinated Approach to Child Health). The program was performed during 3 months, with 3 sessions per week. Intensity of physical activity was determined by the system for observing fitness instruction time (SOFIT), Motor development was determined using the education Battelle developmental inventory, assessing the variables of body coordination, locomotion, fine motor and perceptual ability, which determine the gross and fine motor score. Results: The average engagement time at moderate-to-vigorous physical activity intensity was 65% of the total time of the physical education class. The Student's t-test for related samples was run for the analysis. It reported significant differences in both gross (p=0.00) and fine motor scores (p=0.00), before and after intervention; the percentage of change was 25.5 Δ% and 11.3 Δ%, respectively. Conclusion: Although the CATCH program reports modest results in variables associated with obesity in preschoolers, its application for three months showed positive influence for the improvement of motor development in preschoolers.

Sign in / Sign up

Export Citation Format

Share Document