scholarly journals Comparison of Epoch and Uniaxial Versus Triaxial Accelerometers in the Measurement of Physical Activity in Preschool Children: A Validation Study

2012 ◽  
Vol 24 (3) ◽  
pp. 450-460 ◽  
Author(s):  
Jane F. Hislop ◽  
Cathy Bulley ◽  
Tom H. Mercer ◽  
John J. Reilly
Keyword(s):  
Physical Activity ◽  
Preschool Children ◽  
Rating Scale ◽  
Vigorous Physical Activity ◽  
Free Play ◽  
Video Data ◽  
Activity Data ◽  
Cut Point ◽  
Significant Difference ◽  
Activity Rating

The objectives of this study were to explore whether triaxial is more accurate than uniaxial accelerometry and whether shorter sampling periods (epochs) are more accurate than longer epochs. Physical activity data from uniaxial and triaxial (RT3) devices were collected in 1-s epochs from 31 preschool children (15 males, 16 females, 4.4 ± 0.8 yrs) who were videoed while they engaged in 1-hr of free-play. Video data were coded using the Children’s Activity Rating Scale (CARS). A significant difference (p < .001) in the number of minutes classified as moderate to vigorous physical activity (MVPA) was found between the RT3 and the CARS (p < .002) using the cut point of relaxed walk. No significant difference was found between the GT1M and the CARS or between the RT3 and the CARS using the cut point for light jog. Shorter epochs resulted in significantly greater overestimation of MVPA, with the bias increasing from 0.7 mins at 15-s to 3.2 mins at 60-s epochs for the GT1M and 0 mins to 1.7 mins for the RT3. Results suggest that there was no advantage of a triaxial accelerometer over a uniaxial model. Shorter epochs result in significantly higher number of minutes of MVPA with smaller bias relative to direct observation.

scholarly journals Comparison of Accelerometry Cut Points for Physical Activity and Sedentary Behavior in Preschool Children: A Validation Study

2012 ◽  
Vol 24 (4) ◽  
pp. 563-576 ◽  
Author(s):  
Jane F. Hislop ◽  
Cathy Bulley ◽  
Tom H. Mercer ◽  
John J. Reilly
Keyword(s):  
Preschool Children ◽  
Sedentary Behavior ◽  
Repeated Measures ◽  
Rating Scale ◽  
Free Play ◽  
Video Data ◽  
Cut Points ◽  
Significant Difference ◽  
Vigorous Intensity ◽  
Activity Rating

This study compared accelerometry cut points for sedentary behavior, light and moderate to vigorous intensity activity (MVPA) against a criterion measure, the Children’s Activity Rating Scale (CARS), in preschool children. Actigraph accelerometry data were collected from 31 children (4.4 ± 0.8 yrs) during one hour of free-play. Video data were coded using the CARS. Cut points by Pate et al., van Cauwenberghe et al., Sirard et al. and Puyau et al. were applied to calculate time spent in sedentary, light and MVPA. Repeated-measures ANOVA and paired t tests tested differences between the cut points and the CARS. Bland and Altman plots tested agreement between the cut points and the CARS. No significant difference was found between the CARS and the Puyau et al. cut points for sedentary, light and MVPA or between the CARS and the Sirard et al. cut point for MVPA. The present study suggests that the Sirard et al. and Puyau et al. cut points provide accurate group-level estimates of MVPA in preschool children.

Validation and Reliability of the New Lifestyles NL-1000 Accelerometer in New Zealand Preschoolers

2012 ◽  
Vol 9 (2) ◽  
pp. 295-299 ◽  
Author(s):  
Leanne Liggett ◽  
Andrew Gray ◽  
Winsome Parnell ◽  
Rob McGee ◽  
Yvette McKenzie
Keyword(s):  
Physical Activity ◽  
Rating Scale ◽  
Vigorous Physical Activity ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Activity Level ◽  
Activity Levels ◽  
Validity And Reliability ◽  
Video Footage ◽  
Activity Rating

Background:Objective measures, such as accelerometers, are increasingly being used to measure physical activity (PA) levels in children, and the use of validated and reliable instruments is desirable when measuring the effectiveness of programs. The purpose of this study was to determine the validity and reliability of the New Lifestyles NL-1000 accelerometer among preschoolers using a modified version of the Children’s Activity Rating Scale (CARS).Methods:Fourteen preschoolers wore the NL-1000 at their waist while the device measured activity levels [in seconds of moderate-to-vigorous physical activity (MVPA)]. They were also videoed for approximately 12 minutes while participating in normal activities at an early childhood center. At approximately 2-minute intervals, activity level readings derived from the NL-1000 were recorded. The video footage was analyzed using a modified CARS technique and the CARS scores compared with data obtained from the accelerometer.Results:Within subject reliability was measured using intraclass correlation coefficients (0.58 for CARS and 0.59 for NL-1000). Furthermore, 95% of the variation in CARS could be explained by variation in the accelerometer counts, with 2.4% of the variation being participant-specific.Conclusion:The NL-1000 is a sufficiently reliable and valid tool for assessing MVPA in preschoolers.

Relationship Between Physical Activity and Clinical Outcomes After ACL Reconstruction

2019 ◽  
Vol 28 (2) ◽  
pp. 180-187 ◽  
Author(s):  
Christopher Kuenze ◽  
Lisa Cadmus-Bertram ◽  
Karin Pfieffer ◽  
Stephanie Trigsted ◽  
Dane Cook ◽  
...  
Keyword(s):  
Physical Activity ◽  
Outcome Measures ◽  
Rating Scale ◽  
Cruciate Ligament ◽  
Vigorous Physical Activity ◽  
Rank Correlation ◽  
Knee Function ◽  
History Of ◽  
Activity Rating ◽  
Objectively Measured

Context: Reductions in objectively measured moderate to vigorous physical activity (MVPA) have been reported among individuals with anterior cruciate ligament reconstruction (ACLR). Self-reported measures of physical activity are commonly used to assess participation in physical activity after ACLR despite the lack of evidence to support the validity of such measures within this population. Objective: The objective of this research was to determine the relationships between objectively measured MVPA, self-reported physical activity, and knee function among individuals with ACLR. Setting: University laboratory. Patients (or Other Participants): Thirty-one participants with a history of ACLR (sex: 23 females and 8 males; age = 19.8 [1.4] y) and 31 matched controls (sex: 23 females and 8 males; age = 20.6 [1.7] y) enrolled in this study. Intervention(s): None. Main Outcome Measures: Participants completed self-reported physical activity using the Tegner Activity Scale and the Marx Activity Rating Scale. Participant MVPA was objectively measured using an ActiGraph wGT3X-BT accelerometer for a 7-day period during which the monitor was worn for not less than 10 hours per day. Primary outcome measures were the amount of time spent in MVPA (minutes per week) and time spent in MVPA performed in bouts of ≥10 minutes (minutes per week). Relationships between the Tegner Activity Score, Marx Activity Rating Scale, and objectively measured MVPA variables were assessed using partial Spearman’s rank correlation coefficients after controlling for activity monitor wear time. Results: There were no significant relationships between objectively measured MVPA and self-reported physical activity (ρ ≤ 0.31, P ≥ .05) or self-reported knee-related function (ρ ≤ .41, P ≥ .05) among ACLR participants. Conclusions: Objectively measured physical activity is not significantly related to self-reported physical activity or self-reported knee function among individuals with a history of ACLR. Consideration of objective and self-reported physical activity within this population may provide key insights into disconnects between perception and the reality of physical activity engagement following ACLR.

scholarly journals Does PBL deliver constructive collaboration for students in interprofessional tutorial groups?

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Endang Lestari ◽  
Renée E. Stalmeijer ◽  
Doni Widyandana ◽  
Albert Scherpbier
Keyword(s):  
Medical Students ◽  
Focus Groups ◽  
Rating Scale ◽  
Interprofessional Collaboration ◽  
Pilot Project ◽  
Video Data ◽  
Professional Students ◽  
Significant Difference ◽  
Activity Rating ◽  
Collaborative Activities

Abstract Background Training health professional students in teamwork is recognized as an important step to create interprofessional collaboration in the clinical workplace. Interprofessional problem-based learning (PBL) is one learning approach that has been proposed to provide students with the opportunity to develop the necessary skills to work collaboratively with various health professionals. This study aimed to explore the extent to which students in interprofessional tutorial groups demonstrate constructive collaboration during group discussions. Methods Students (N = 52) from the Medical, Midwifery and Nursing programmes took part in the study. Video-recordings were made of interprofessional PBL discussions (N = 40) in five groups, eight videos per group. Over a period of 4 weeks, participants discussed four scenarios concerned with the reproductive system. The resulting 67 h of video data were analysed qualitatively. To ensure inter-rater reliability, two tutors assessed the students’ constructive, collaborative activities using the Maastricht Peer-Activity Rating Scale (MPARS). Finally, to gain an understanding of students’ perceptions of their performance and participation in the interprofessional PBL tutorial, we organized three uni-professional focus groups (FGs) at the end of pilot project. Results The translated MPARS was reliable (Kappa coefficient 0.01–0.20 and p < 0.05). Students were actively involved in the discussion and contributed to a better understanding regardless of their professional background. Group members from different professions complemented one another in solving learning issues. They were open, feeling free to question and argue from the viewpoint of their own profession, and also understood their strengths and limitations. The statistical test of the scores for constructive and collaborative activities indicated a significant difference between students and the various healthcare professionals, p = 0.000, with medical students scoring highest on both activities. Focus groups further clarified some of the observed dynamics. Conclusion Implementing interprofessional PBL could motivate students to engage collaboratively in co-constructing knowledge to solve the patients’ problem. Medical students scored highest on constructive and collaborative activities.

scholarly journals Accelerometer output and its association with energy expenditure in persons with mild-to-moderate Parkinson’s disease

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0242136
Author(s):  
Brenda Jeng ◽  
Katie L. J. Cederberg ◽  
Byron Lai ◽  
Jeffer E. Sasaki ◽  
Marcas M. Bamman ◽  
...  
Keyword(s):  
Physical Activity ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Energy Expenditure ◽  
Vigorous Physical Activity ◽  
Strong Association ◽  
Future Research ◽  
Cut Point ◽  
Actigraph Accelerometer ◽  
Significant Difference

Objective This study examined the association between ActiGraph accelerometer output and energy expenditure across different speeds of walking in persons with Parkinson’s disease (PD), and further generated cut-points that represent a metric for quantifying time spent in moderate-to-vigorous physical activity (MVPA) among persons with PD. Methods The sample included 30 persons with mild-to-moderate PD (Hoehn and Yahr stages 2–3) and 30 adults without PD matched by sex and age. All participants completed 5 minutes of quiet, seated rest and then underwent three, 6-minute bouts of walking on a treadmill at three different speeds relative to the individual’s self-selected pace. Activity counts were measured using an ActiGraph accelerometer worn at the waist level on the least affected side for persons with PD and the dominant side for controls. The rate of oxygen consumption, or energy expenditure, was measured using a portable, open-circuit spirometry system. Results Our results indicated a strong association between activity counts and energy expenditure for persons with PD (R2 = 0.87) and controls (R2 = 0.89). However, the significant difference in slopes resulted in a lower cut-point of 1,354 counts·min-1 for persons with PD than the cut-point of 2,010 counts·min-1 for controls. Conclusion Our results support the application of the disease-specific cut-point for quantifying the amount of time spent in MVPA using ActiGraph accelerometers among persons with mild-to-moderate PD. Such an application may provide accurate estimates of MVPA in this population, and better inform future research examining the possible determinants and consequences of physical activity as well as testing of interventions for changing MVPA in PD.

scholarly journals Lockdown, slow down: impact of the COVID-19 pandemic on physical activity—an observational study

Open Heart ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. e001600
Author(s):  
Joanne Kathryn Taylor ◽  
Haarith Ndiaye ◽  
Matthew Daniels ◽  
Fozia Ahmed
Keyword(s):  
Physical Activity ◽  
New York ◽  
Heart Association ◽  
Evaluation Study ◽  
Activity Data ◽  
Cardiac Devices ◽  
Significant Difference ◽  
New York Heart Association ◽  
Using Data ◽  
The Uk

AimsIn response to the COVID-19 pandemic, the UK was placed under strict lockdown measures on 23 March 2020. The aim of this study was to quantify the effects on physical activity (PA) levels using data from the prospective Triage-HF Plus Evaluation study.MethodsThis study represents a cohort of adult patients with implanted cardiac devices capable of measuring activity by embedded accelerometery via a remote monitoring platform. Activity data were available for the 4 weeks pre-implementation and post implementation of ‘stay at home’ lockdown measures in the form of ‘minutes active per day’ (min/day).ResultsData were analysed for 311 patients (77.2% men, mean age 68.8, frailty 55.9%. 92.2% established heart failure (HF) diagnosis, of these 51.2% New York Heart Association II), with comorbidities representative of a real-world cohort.Post-lockdown, a significant reduction in median PA equating to 20.8 active min/day was seen. The reduction was uniform with a slightly more pronounced drop in PA for women, but no statistically significant difference with respect to age, body mass index, frailty or device type. Activity dropped in the immediate 2-week period post-lockdown, but steadily returned thereafter. Median activity week 4 weeks post-lockdown remained significantly lower than 4 weeks pre-lockdown (p≤0.001).ConclusionsIn a population of predominantly HF patients with cardiac devices, activity reduced by approximately 20 min active per day in the immediate aftermath of strict COVID-19 lockdown measures.Trial registration numberNCT04177199.

scholarly journals The Relationship of Perceived Body Image, Body Mass Index and Physical Activity with Weight Status among Students at King Abdulaziz University Hospital

2021 ◽  
pp. 218-227
Author(s):  
Futoon S. Alobiri ◽  
Roaa A. Alharbi ◽  
Mohammed R. Algethami ◽  
Raghdah H. Ateeq ◽  
Aseel M. Badurayq ◽  
...  
Keyword(s):  
Physical Activity ◽  
Body Mass Index ◽  
Body Image ◽  
Body Weight ◽  
Body Mass ◽  
Body Satisfaction ◽  
Weight Status ◽  
Rating Scale ◽  
Significant Difference ◽  
King Abdulaziz University

Aim: Identify the relation between poor esteem for body image and weight-related behaviors. The results will help increase awareness and improve students’ lifestyles to have a better body image and achieve ideal body weight. Methods: A cross-sectional study was conducted among King Abdulaziz University medical students (n= 460) between July to the end of August 2019. Data was collected using the International physical activity questionnaire (IPAQ), figure rating scale (FRS) and analyzed using SPSS software. Result: The results showed that the average Body Mass Index (BMI) was 24.80 ± 11.89. Participant sex was an important factor influencing the prevalence of obesity; male students were more obese than female students with a significant difference (p<0.001). The level of body satisfaction was also affected by gender. Students in preclinical years were more likely to gain weight more than clinical years students. Conclusion: The results show a significant relationship between body satisfaction and gender (P<0.0001) despite having diverse BMIs. Overweight and obese males and females' participants had the lowest body satisfaction. Females who were too thin and had low BMIs described themselves as normal, while males describe themselves as too thin. Conversely, females with high BMIs described themselves as too fat, while males described themselves as normal. This could be due to different factors. Also, underweight females and males have high body satisfaction, which can lead to dangerous behaviors to maintain low body weight which cause negative health consequences.

A Network Perspective on the Relationship Between Moderate to Vigorous Physical Activity and Fundamental Motor Skills in Early Childhood

2021 ◽  
pp. 1-8
Author(s):  
Thaynã Alves Bezerra ◽  
Paulo Felipe Ribeiro Bandeira ◽  
Anastácio Neco de Souza Filho ◽  
Cain Craig Truman Clark ◽  
Jorge Augusto Pinto Silva Mota ◽  
...  
Keyword(s):  
Physical Activity ◽  
Early Childhood ◽  
Vigorous Physical Activity ◽  
Cross Sectional Study ◽  
Older Children ◽  
Activity Data ◽  
Cross Sectional ◽  
Nonlinear Characteristics ◽  
Main Variable ◽  
The Relationship

Background: The relationship between moderate to vigorous physical activity (MVPA) and fundamental motor skill (FMS) is inconsistent in early childhood, due to its complex and nonlinear characteristics. This study aimed to analyze the nonlinear relationships between MVPA, FMS, body mass index (BMI), sex, and age in preschoolers. Methods: This cross-sectional study with preschoolers (n = 204; 4.0 [0.8] y old; 99 boys), provided objective physical activity data, FMS assessments, and BMI. The associations between MVPA, FMS, BMI, sex, and age were explored using the network analysis (RStudio and qgraph). Results: Boys were more motor competent than girls in all FMS skills, while girls were more active than boys during the weekend. Older children were less active than their younger peers during these days. MVPA is weak and differently related to each FMS, and the leap skill emerged with the highest betweenness and strength values in the network. Conclusions: For the assessed preschoolers, when considering BMI, age, and sex, the relationships between MVPA and FMS are inconsistent, and leap emerged as the main variable. During early childhood, these variables are connected as part of a complex system in which each skill has a dynamic role within the emerging pattern.

scholarly journals Is missing geographic positioning system data in accelerometry studies a problem, and is imputation the solution?

2016 ◽  
Vol 11 (2) ◽  
Author(s):  
Kristin Meseck ◽  
Marta M. Jankowska ◽  
Jasper Schipperijn ◽  
Loki Natarajan ◽  
Suneeta Godbole ◽  
...  
Keyword(s):  
Physical Activity ◽  
Built Environment ◽  
Linear Mixed Model ◽  
Vigorous Physical Activity ◽  
Gps Data ◽  
Positioning System ◽  
Accelerometer Data ◽  
Generalised Linear Mixed Model ◽  
Significant Difference ◽  
The Impact

The main purpose of the present study was to assess the impact of global positioning system (GPS) signal lapse on physical activity analyses, discover any existing associations between missing GPS data and environmental and demographics attributes, and to determine whether imputation is an accurate and viable method for correcting GPS data loss. Accelerometer and GPS data of 782 participants from 8 studies were pooled to represent a range of lifestyles and interactions with the built environment. Periods of GPS signal lapse were identified and extracted. Generalised linear mixed models were run with the number of lapses and the length of lapses as outcomes. The signal lapses were imputed using a simple ruleset, and imputation was validated against person-worn camera imagery. A final generalised linear mixed model was used to identify the difference between the amount of GPS minutes pre- and post-imputation for the activity categories of sedentary, light, and moderate-to-vigorous physical activity. Over 17% of the dataset was comprised of GPS data lapses. No strong associations were found between increasing lapse length and number of lapses and the demographic and built environment variables. A significant difference was found between the pre- and postimputation minutes for each activity category. No demographic or environmental bias was found for length or number of lapses, but imputation of GPS data may make a significant difference for inclusion of physical activity data that occurred during a lapse. Imputing GPS data lapses is a viable technique for returning spatial context to accelerometer data and improving the completeness of the dataset.

scholarly journals The effect of different environmental conditions on the physical activity of preschool children in Estonia

2019 ◽  
Vol 24 ◽  
pp. 42-50
Author(s):  
Sirle Nekraš ◽  
Mikola Misjuk
Keyword(s):  
Physical Activity ◽  
Preschool Children ◽  
Environmental Conditions ◽  
Free Play ◽  
Background Music ◽  
Sport Equipment ◽  
Childcare Centre ◽  
Children’S Physical Activity

The purpose of the study is to investigate the effect of different environmental conditions on the physical activity of preschool children. The experiment took place in Estonian childcare centre during the free playtime. Fifteen children aged 6–7 years from childcare centre participated in the research. Physical activity was measured using pedometers Fitbit Zip™. Results show that in comparison to the usual free play the physical activity of children increased statistically significantly by 83% when background music was played, by 50% when sport equipment was provided and by 101% when both environmental conditions were combined. It was found that compared to the usual free play, children’s activity increased the least when only sport equipment was provided, while children’s activity increased more when background music was played and increased the most when music with sport equipment was combined. Physical activity did not differ when only background music and music with sport equipment were used. It can be summarised that the background music and opportunity to use portable sport equipment increases the physical activity of children during free play. Background music has greater impact on the activity than portable sport equipment. Children’s physical activity can be effectively increased in childcare centre by using simple modifications such as background music and portable sport equipment during free play.

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