scholarly journals Application and Validation of Activity Monitors’ Epoch Lengths and Placement Sites for Physical Activity Assessment in Exergaming

2018 ◽  
Vol 7 (9) ◽  
pp. 268 ◽  
Author(s):  
Jungyun Hwang ◽  
Austin Fernandez ◽  
Amy Lu

We assessed the agreement of two ActiGraph activity monitors (wGT3X vs. GT9X) placed at the hip and the wrist and determined an appropriate epoch length for physical activity levels in an exergaming setting. Forty-seven young adults played a 30-min exergame while wearing wGT3X and GT9X on both hip and wrist placement sites and a heart rate sensor below the chest. Intraclass correlation coefficient indicated that intermonitor agreement in steps and activity counts was excellent on the hip and good on the wrist. Bland-Altman plots indicated good intermonitor agreement in the steps and activity counts on both placement sites but a significant intermonitor difference was detected in steps on the wrist. Time spent in sedentary and physical activity intensity levels varied across six epoch lengths and depended on the placement sites, whereas time spent from a 1-s epoch of the hip-worn monitors most accurately matched the relative exercise intensity by heart rate. Hip placement site was associated with better step-counting accuracy for both activity monitors and more valid estimation of physical activity levels. A 1-s epoch was the most appropriate epoch length to detect short bursts of intense physical activity and may be the best choice for data processing and analysis in exergaming studies examining intermittent physical activities.

Author(s):  
Nur Syahida Binte Jamaluddin ◽  
Masato Kawabata

Physical education (PE) lessons are the appropriate occasions to promote physical activity for children. Although the moderate-to-vigorous physical activity (MVPA) levels during PE lessons were investigated in several countries, MVPA levels during PE lessons were never reported at Singapore primary schools. Therefore, the present study aimed to investigate physical activity intensity levels during PE lessons at a Singapore primary school. A total of 93 students (40 girls) voluntary participated in the study: 28 in Grade 1, 39 in Grade 4, and 26 in Grade 6. They were asked to wear an accelerometer on their non-dominant hand in two PE lessons to measure physical activity levels objectively. They also completed questionnaires on their experiences during the PE lessons. The average of the MVPA levels time (%) in the scheduled lesson time across the three grades was 46.98 ± 5.25%, but the average of the MVPA levels time (%) in the actual lesson time was 69.74 ± 7.31%. These results indicated that it would be possible to achieve the recommended MVPA time in PE lessons. The findings of this study would be useful for PE teachers to reflect whether their PE lessons are efficient to promote primary school student’s physical activity levels.


2021 ◽  
Vol 3 (2) ◽  
pp. 44
Author(s):  
Bayu Aji Mayogya Putra ◽  
Reni Hendrarati Masduchi ◽  
Martha Kurnia Kusumawardani

Background: Physical activity (PA) has been associated with multiple health benefits. However, the global population does not meet the PA recommendations. Virtual reality exergaming (VR EXG) can become an option to increase PA because it is fun, relatively easy to access and affordable through popular commercial devices.Aim: To investigate the immediate cardiovascular responses(blood pressure, heart rate), quantification of PA intensity(percentage of maximum heart rate (%HRmax), Borg’s rating of perceived exertion (RPE), and the level of enjoyment using visual analog scale (VAS) while playing VR EXG.Material and Methods: Fifteen healthy men (aged 31.87±3.14 years old, body mass index 23.77±2.47 kg/m2) undergone three“Fitness Boxing” Nintendo Switch™ playing modes in the same order: (1) single player-normal tempo, (2) single player-fast tempo and (3) versus. During playing, participant’s HR was monitored using Polar H10 heart rate sensor. Blood pressure was measured before and after playing. Borg’s RPE and VAS were collected after playing.Results: Our results showed significant heart rate and systolic blood pressure increase (p = 0.001) in all three playing conditions, whereas diastolic blood pressure was relatively constant (p > 0.05). The Borg’s RPE were in 12-13 range (moderate) and %HRmax range between 72- 81% (vigorous). The enjoyment level was found greatest in versus mode compared to other playing modes.Conclusion: VR EXG Nintendo Switch™ “Fitness Boxing” can elicit immediate cardiovascular responses and provides an enjoyable moderate to vigorous PA intensity in healthy male adults, and can be used to meet the weekly PA recommendations. 


2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Jessica S. Gubbels ◽  
Dave H. H. Van Kann ◽  
Maria W. J. Jansen

This study investigated the association between physical activity facilities at childcare (e.g., play equipment) and physical activity of 2- and 3-year olds. Observations of physical activity intensity were performed among 175 children at 9 childcare centers in The Netherlands, using the OSRAC-P. The physical activity facilities were assessed for indoors and outdoors separately, using the EPAO instrument. Regular (single-level) multivariate and multilevel linear regression analyses examined the association of the facilities and child characteristics (age and sex) with children's activity levels. Various physical activity facilities were available in all childcare centers (e.g., balls). Riding toys and a small playing area were associated with lower indoor physical activity levels. Outdoor physical activity levels were positively associated with the availability of portable jumping equipment and the presence of a structured track on the playground. Portable slides, fixed swinging equipment, and sandboxes were negatively associated with outdoor activity levels. In addition, the 3-year old children were more active outdoors than the 2-year olds. In conclusion, not all physical activity facilities at childcare were indeed positively associated with children's activity levels. The current findings provide concrete leads for childcare providers regarding which factors they can improve in the physical environment to facilitate children's physical activity.


2019 ◽  
Vol 78 (8) ◽  
pp. 988-999
Author(s):  
Pablo Tercedor ◽  
Víctor Segura-Jiménez ◽  
Manuel Ávila García ◽  
Francisco Javier Huertas-Delgado

Objective:The goals of this study were to (1) describe physical activity levels during school recess in 8-year-old children, (2) analyse the percentage of children who achieved physical activity recommendation at recess, and (3) examine if recess physical activity levels varied by gender, weight status, and parental educational level.Methods:In all, 291 children (mean age ±  SD = 8.3 ± 0.3 years, 156 boys) from 7 schools of Granada (Spain) were recruited by convenience. To analyse sedentary time and physical activity levels during recess, children wore a tri-axial accelerometer attached to the wrist over five consecutive school days.Results:Sedentary time (29.6% vs 40%) and light physical activity (33.2% vs 35.5%) were lower in boys than in girls (all p < .001). Conversely, moderate physical activity (26.7% vs 20%), vigorous physical activity (10.5% vs 4.4%) and moderate-vigorous physical activity (37.2% vs 24.4%) were higher in boys than in girls (all p < .001). Only 12% of the children accomplished the moderate-vigorous physical activity recommendations during recess (21.2% boys vs 1.5% girls). Lower body mass index values were associated with higher vigorous physical activity intensity.Conclusions:Levels of moderate-vigorous physical activity during school recess are very low in children, being lower in girls than in boys, a very low percentage of children achieve moderate-vigorous physical activity recommendations during school recess, and girls and overweight/obese children show lower values in moderate-vigorous and vigorous physical activity.


2002 ◽  
Vol 27 (5) ◽  
pp. 449-462 ◽  
Author(s):  
Michelle D. Fortier ◽  
Peter T. Katzmarzyk ◽  
Claude Bouchard

Associations among baseline physical activity, aerobic fitness, changes in physical activity, and 7-y changes in adiposity were determined. The sample consisted of 602 males and 644 females, aged 20-69 y, from the 1981 Canada Fitness Survey and the 1988 Campbell's Survey. Questionnaire-derived measures of physical activity level consisted of activity energy expenditure (AEE) and time spent on physical activity. Participants were grouped into physical activity level categories by AEE and physical activity intensity (based on MET values), and physical activity level changes were determined from movement between tertiles of AEE from baseline to follow-up. Aerobic fitness levels at baseline were determined using the Canadian Aerobic Fitness Test. Changes in body mass, the sum of five skinfolds (SF5), and waist circumference (WC) were used as indicators of adiposity change. ANCOVA and multiple regression analyses indicated that neither baseline physical activity levels, intensity, physical activity change categories, nor aerobic fitness levels were significant predictors of changes in adiposity. In conclusion, physical activity was not predictive of 7-y changes in indicators of adiposity in this sample. Key words: weight gain, longitudinal study, obesity, lifestyle


Retos ◽  
2015 ◽  
pp. 43-47
Author(s):  
Guillermo Oviedo ◽  
Josep Sánchez ◽  
Rubén Castro ◽  
Mar Calvo ◽  
Juan Carlos Sevilla ◽  
...  

La actividad física (AF) es fundamental en la infancia y en la adolescencia a fin de promover un desarrollo saludable. La OMS (2010), recomienda que los niños de 5-17 años deberían acumular un mínimo de 60 minutos diarios de AF moderada (3 - 6 METs) o vigorosa (> 6 METs). El objetivo general del estudio se centra en evaluar y conocer mediante la utilización de acelerometría triaxial si el tiempo e intensidad de la AF realizada diariamente por los adolescentes de un centro escolar cumplen con las recomendaciones de la OMS. Los participantes fueron 60 adolescentes pertenecientes a la escuela Empordá (Roses, España). Previamente se obtuvo el consentimiento informado de los padres y/o tutores. Los niveles de AF diarios fueron obtenidos mediante acelerometría, el índice de Masa corporal (IMC) se calculó utilizando el peso y la altura, la frecuencia cardíaca (FC) y tensión arterial (TA) se obtuvieron mediante un tensiómetro digital. Se realizó un análisis descriptivo de todas las variables y el test T de Student (p < .05) se utilice para analizar las diferencias entre varones y mujeres. Los pricipales resultados muestran que los varones realizan AF durante más tiempo y a mayores intensidades que las mujeres. Existe un bajo porcentaje de alumnos que cumplen con las recomendaciones de la OMS. Como conclusiones, creemos muy importante la búsqueda de nuevas estrategias y métodos a fin de involucrar un mayor número de adolescentes en la práctica de AF, como también vemos de vital inportancia las sesiones de AF en la escuela.Palabra clave: actividad física, intensidad, gasto calórico, adolescentes, acelerómetro, acelerometría.Abstract: Physical Activity (PA) is very important during childhood and adolescence in order to promote healthy development and prevent obesity. The WHO recommends 60 minutes daily of moderate-vigorous activity (e» 3 METs/day). The main objective of the study is to assess the levels of PA intensity performed daily by adolescents from a school using the triaxial accelerometry system and to know if they achieve the WHO recommendations. The sample size was 60 Spanish adolescents (14.52 ± .854 year-old) belongs to the Empordá school (Empúries, Spain). Previous informed consent was obtained from their parents and/or tutors. PA levels were obtained through accelerometry, Body Mass Index (BMI) was calculated though weight and height, heart rate (HR) and blood pressure (BP) were measured using a digital automatic blood pressure monitor. Descriptive for all data was calculated, and T–test (p < .05) was used to analyze the differences between boys and girls. The main result show that males performed PA during longer time and at higher intensity than women. There is a low percentage of students who achieve the WHO recommendations. In conclusion, we believe very important to seek new strategies and methods to involve more adolescents in the practice of PA, and we believe that PA sessions at school are very important. Key words: physical activity, intensity, energy expenditure, adolescents, accelerometry, accelerometer.


2001 ◽  
Vol 33 (5) ◽  
pp. S250 ◽  
Author(s):  
U Ekelund ◽  
E Poortvliet ◽  
A Yngve ◽  
A Nilsson ◽  
A Hurtig-Wennl??f ◽  
...  

2019 ◽  
Vol 7 ◽  
pp. 205031211985225 ◽  
Author(s):  
Junichiro Hayano ◽  
Masaya Kisohara ◽  
Yutaka Yoshida ◽  
Hiroyuki Sakano ◽  
Emi Yuda

Objectives: Senility death is defined as natural death in the elderly who do not have a cause of death to be described otherwise and, if human life is finite, it may be one of the ultimate goals of medicine and healthcare. A recent survey in Japan reports that municipalities with a high senility death ratio have lower healthcare costs per late-elderly person. However, the causes of regional differences in senility death ratio and their biomedical determinants were unknown. In this study, we examined the relationships of the regional difference in senility death ratio with the regional differences in heart rate variability and physical activity. Methods: We compared the age-adjusted senility death ratio of all Japanese prefectures with the regional averages of heart rate variability and actigraphic physical activity obtained from a physiological big data of Allostatic State Mapping by Ambulatory ECG Repository (ALLSTAR). Results: The age-adjusted senility death ratio of 47 Japanese prefectures in 2015 ranged from 1.2% to 3.6% in men and from 3.5% to 7.8% in women. We compared these ratios with the age-adjusted indices of heart rate variability in 108,865 men and 136,536 women and of physical activity level in 16,661 men and 21,961 women. Heart rate variability indices and physical activity levels that are known to be associated with low mortality risk were higher in prefectures with higher senility death ratio. Conclusion: The regional senility death ratio in Japan may be associated with regional health status as reflected in heart rate variability and physical activity levels.


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