scholarly journals Comparison of the Physical Activity Measured by a Consumer Wearable Activity Tracker and That Measured by Self-Report: Cross-Sectional Analysis of the Health eHeart Study (Preprint)

2020 ◽  
Author(s):  
Alexander J Beagle ◽  
Geoffrey H Tison ◽  
Kirstin Aschbacher ◽  
Jeffrey E Olgin ◽  
Gregory M Marcus ◽  
...  
Keyword(s):  
Physical Activity ◽  
Self Report ◽  
Moderate Activity ◽  
Vigorous Activity ◽  
Cross Sectional ◽  
Active Time ◽  
Step Counts ◽  
Steps Per Day ◽  
Wearable Activity Trackers ◽  
Sectional Analysis

BACKGROUND Commercially acquired wearable activity trackers such as the Fitbit provide objective, accurate measurements of physically active time and step counts, but it is unclear whether these measurements are more clinically meaningful than self-reported physical activity. OBJECTIVE The aim of this study was to compare self-reported physical activity to Fitbit-measured step counts and then determine which is a stronger predictor of BMI by using data collected over the same period reflecting comparable physical activities. METHODS We performed a cross-sectional analysis of data collected by the Health eHeart Study, a large mobile health study of cardiovascular health and disease. Adults who linked commercially acquired Fitbits used in free-living conditions with the Health eHeart Study and completed an International Physical Activity Questionnaire (IPAQ) between 2013 and 2019 were enrolled (N=1498). Fitbit step counts were used to quantify time by activity intensity in a manner comparable to the IPAQ classifications of total active time and time spent being sedentary, walking, or doing moderate activities or vigorous activities. Fitbit steps per day were computed as a measure of the overall activity for exploratory comparisons with IPAQ-measured overall activity (metabolic equivalent of task [MET]-h/wk). Measurements of physical activity were directly compared by Spearman rank correlation. Strengths of associations with BMI for Fitbit versus IPAQ measurements were compared using multivariable robust regression in the subset of participants with BMI and covariates measured. RESULTS Correlations between synchronous paired measurements from Fitbits and the IPAQ ranged in strength from weak to moderate (0.09-0.48). In the subset with BMI and covariates measured (n=586), Fitbit-derived predictors were generally stronger predictors of BMI than self-reported predictors. For example, an additional hour of Fitbit-measured vigorous activity per week was associated with nearly a full point reduction in BMI (–0.84 kg/m<sup>2</sup>, 95% CI –1.35 to –0.32) in adjusted analyses, whereas the association between self-reported vigorous activity measured by IPAQ and BMI was substantially smaller in magnitude (–0.17 kg/m<sup>2</sup>, 95% CI –0.34 to –0.00; <i>P</i>&lt;.001 versus Fitbit) and was dominated by the Fitbit-derived predictor when compared head-to-head in a single adjusted multivariable model. Similar patterns of associations with BMI, with Fitbit dominating self-report, were seen for moderate activity and total active time and in comparisons between overall Fitbit steps per day and IPAQ MET-h/wk on standardized scales. CONCLUSIONS Fitbit-measured physical activity was more strongly associated with BMI than self-reported physical activity, particularly for moderate activity, vigorous activity, and summary measures of total activity. Consumer-marketed wearable activity trackers such as the Fitbit may be useful for measuring health-relevant physical activity in clinical practice and research.

scholarly journals Comparison of the Physical Activity Measured by a Consumer Wearable Activity Tracker and That Measured by Self-Report: Cross-Sectional Analysis of the Health eHeart Study

10.2196/22090 ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. e22090
Author(s):  
Alexander J Beagle ◽  
Geoffrey H Tison ◽  
Kirstin Aschbacher ◽  
Jeffrey E Olgin ◽  
Gregory M Marcus ◽  
...  
Keyword(s):  
Physical Activity ◽  
Self Report ◽  
Moderate Activity ◽  
Vigorous Activity ◽  
Cross Sectional ◽  
Active Time ◽  
Step Counts ◽  
Steps Per Day ◽  
Wearable Activity Trackers ◽  
Sectional Analysis

Background Commercially acquired wearable activity trackers such as the Fitbit provide objective, accurate measurements of physically active time and step counts, but it is unclear whether these measurements are more clinically meaningful than self-reported physical activity. Objective The aim of this study was to compare self-reported physical activity to Fitbit-measured step counts and then determine which is a stronger predictor of BMI by using data collected over the same period reflecting comparable physical activities. Methods We performed a cross-sectional analysis of data collected by the Health eHeart Study, a large mobile health study of cardiovascular health and disease. Adults who linked commercially acquired Fitbits used in free-living conditions with the Health eHeart Study and completed an International Physical Activity Questionnaire (IPAQ) between 2013 and 2019 were enrolled (N=1498). Fitbit step counts were used to quantify time by activity intensity in a manner comparable to the IPAQ classifications of total active time and time spent being sedentary, walking, or doing moderate activities or vigorous activities. Fitbit steps per day were computed as a measure of the overall activity for exploratory comparisons with IPAQ-measured overall activity (metabolic equivalent of task [MET]-h/wk). Measurements of physical activity were directly compared by Spearman rank correlation. Strengths of associations with BMI for Fitbit versus IPAQ measurements were compared using multivariable robust regression in the subset of participants with BMI and covariates measured. Results Correlations between synchronous paired measurements from Fitbits and the IPAQ ranged in strength from weak to moderate (0.09-0.48). In the subset with BMI and covariates measured (n=586), Fitbit-derived predictors were generally stronger predictors of BMI than self-reported predictors. For example, an additional hour of Fitbit-measured vigorous activity per week was associated with nearly a full point reduction in BMI (–0.84 kg/m2, 95% CI –1.35 to –0.32) in adjusted analyses, whereas the association between self-reported vigorous activity measured by IPAQ and BMI was substantially smaller in magnitude (–0.17 kg/m2, 95% CI –0.34 to –0.00; P<.001 versus Fitbit) and was dominated by the Fitbit-derived predictor when compared head-to-head in a single adjusted multivariable model. Similar patterns of associations with BMI, with Fitbit dominating self-report, were seen for moderate activity and total active time and in comparisons between overall Fitbit steps per day and IPAQ MET-h/wk on standardized scales. Conclusions Fitbit-measured physical activity was more strongly associated with BMI than self-reported physical activity, particularly for moderate activity, vigorous activity, and summary measures of total activity. Consumer-marketed wearable activity trackers such as the Fitbit may be useful for measuring health-relevant physical activity in clinical practice and research.

Capacidades físicas y su relación con la actividad física y composición corporal en adultos (Physical capacities and their relationship with physical activity and body composition in adults)

Retos ◽  
2021 ◽  
Vol 41 ◽  
pp. 674-683
Author(s):  
Liliana Aracely Enriquez-Del Castillo ◽  
Natanael Cervantes Hernández ◽  
Ramón Candia Luján ◽  
Luis Alberto Flores Olivares
Keyword(s):  
Physical Activity ◽  
Body Composition ◽  
Grip Strength ◽  
Moderate Activity ◽  
Vigorous Activity ◽  
Cross Sectional ◽  
Close Relationship ◽  
Las Mujeres ◽  
Post Hoc ◽  
Physical Capacities

La práctica regular de actividad física sugiere un aumento de la condición física y una mejora de la composición corporal; sin embargo, a pesar de que las personas cumplen con las directrices propuestas no logran obtener buenos indicadores de condición física los cuales brindan más información acerca de la salud. Objetivo: Analizar la relación entre las capacidades físicas de fuerza prensil, potencia en piernas, consumo máximo de oxígeno, actividad física con la composición corporal en adultos. Metodología: Estudio descriptivo correlacional de corte transversal, se evaluaron 100 adultos, se valoró fuerza prensil con dinamometría, potencia en piernas con tres tipos de saltos, VO2máx, la actividad física por cuestionario IPAQ y la composición corporal con bioimpedancia eléctrica. Resultados: Los varones poseen valores mayores de capacidades físicas, masa magra y actividad física realizada con mayor intensidad en comparación con las mujeres; los resultados muestran una estrecha relación entre la práctica de actividad física realizada con intensidades moderadas y altas en relación a las capacidades físicas de fuerza prensil y potencia en piernas en aquellas personas sin peso bajo u obesidad; Además, en todas éstas, mediante el análisis Post Hoc, se encontró que las diferencias se presentan entre la actividad baja en comparación con la vigorosa y en la moderada con respecto a la vigorosa. Conclusiones: Personas con normo y sobrepeso muestran mejores capacidades físicas, así como valores elevados de actividad física, mientras que altos índices de grasa corporal total y un IMC elevado son un factor determinante para el desarrollo de las mismas.  Abstract: The regular practice of physical activity suggests an increase in physical condition and an improvement in body composition, despite the fact that people comply with the proposed guidelines, they are unable to obtain good indicators of physical fitness, which provide more information about the Health. Objective: To analyze the relationship between physical capacities of grip strength, leg power, maximum oxygen consumption, physical activity and body composition in adults. Methodology: Cross-sectional correlational descriptive study, 100 adults were evaluated, grip strength was assessed with dynamometry, leg power with three types of jumps, VO2max, physical activity by IPAQ questionnaire and body composition with electrical bioimpedance. Results: Men have higher values ​​of physical capacities, lean mass and physical activity carried out with greater intensity compared to women; The results show a close relationship between the practice of physical activity carried out with moderate and high intensities in relation to the physical capacities of grip strength and power in the legs in those without underweight or obesity; In addition, in all of these, by means of Post Hoc analysis, it was found that the differences are presented between low activity compared to vigorous activity and moderate activity compared to vigorous activity. Conclusions: Normal and overweight people show better physical capacities as well as high levels of physical activity, while high levels of total body fat and a high BMI are a determining factor for their development.

The Association Between Exercise Behavior Regulation and Exergaming in Adolescents

2015 ◽  
Vol 12 (3) ◽  
pp. 328-334 ◽  
Author(s):  
Erin K. O’Loughlin ◽  
Catherine M. Sabiston ◽  
Erika N. Dugas ◽  
Jennifer L. O’Loughlin
Keyword(s):  
Physical Activity ◽  
Team Sports ◽  
Exercise Behavior ◽  
Self Report ◽  
Behavior Regulation ◽  
Cross Sectional ◽  
Cross Sectional Analysis ◽  
Intrinsic Regulation ◽  
Sectional Analysis ◽  
Identified Regulation

Background:It is not known if or how exercise behavior regulations (EBRs) relate to exergaming in adolescents. The study objectives were 1) to determine if EBRs differ between adolescents who do and do not exergame; and 2) among exergamers, to describe the associations between EBRs and exergame duration, intensity, and achieving physical activity (PA) guidelines.Methods:This study was a cross-sectional analysis of data collected in mailed self-report questionnaires completed by 1243 students (mean ± SDage = 16.8 ± 0.5 years; 43% boys).Results:In girls, those who exergamed scored higher than nonexergamers on introjected (mean ± SD = 1.9 ± 1.0 vs.1.6 ± 0.9; P = .001) and identified (mean ± SD = 3.1 ± .0 vs.2.9 ± 0.9; P = .049) regulation. Exergame intensity was associated with identified regulation [OR (95% CI) = 2.2 (1.0, 4.5)], minutes exergaming per week was associated with amotivation [β (95% CI) = 0.4 (−0.0, 0.8)], and achieving guidelines was associated with external [OR (95% CI) = 3.7 (1.0, 13.4)] and identified [OR (95% CI) = 5.6 (2.0, 16.0)] regulations. In boys who exergamed, intrinsic regulation was associated with exergame duration [β (95% CI) = −0.3 (−0.6, 0.0)].Conclusions:Girls who exergame may have partially internalized exergaming as a PA behavior. Boys may prefer other types of PA such as team sports or other more traditional videogames over exergaming or they may not view exergaming as PA.

scholarly journals Pattern of vigorous physical activity among Egyptian freshmen university students

2011 ◽  
Vol 23 (4) ◽  
Author(s):  
Nadia Abd El-Hamed Montasser ◽  
Abdel-Hady El-Gilany Abd El- Fattah ◽  
Randah Mohamad Helal
Keyword(s):  
Physical Activity ◽  
University Students ◽  
Short Form ◽  
Vigorous Physical Activity ◽  
Sociodemographic Factors ◽  
Cross Sectional Study ◽  
Moderate Activity ◽  
Vigorous Activity ◽  
Personal Factors ◽  
Cross Sectional

Objectives. To highlight the pattern of vigorous physical activity among freshmen university students and to evaluate the association between sociodemographic factors, perceived barriers, support factors, sedentary behaviours and body mass index. Methods. A cross-sectional study was conducted on Mansoura University students at the beginning of the academic year 2008 - 2009. A total of 500 freshmen students were selected by systematic random sample. Participants responded to the short form of International Physical Activity Questionnaire and other questions. Results. The study revealed that the prevalence of vigorous activity among the students was 9.8% (N=49) versus 90.2% (N=451) for mild and moderate activity. Body-related barriers were significantly higher among those reporting mild and moderate activities as shyness from others when doing exercise (6.9% versus 0.0%) and shyness from body looks in front of people (14.6% versus 4.1%). Lack of equipment was also perceived to be a barrier (31.0% versus 16.3%), for those doing mild to moderate versus vigorous, respectively. A significantly higher proportion of persons doing vigorous activity reported the influence of support factors such as perceived benefit for health (53.1% versus 33.7%), encouragement from others (53.1% versus 30.4%) and participation from others (51.0% versus 23.9%), compared with the more sedentary students. The majority of both groups spent <4 hours daily in front of a computer, but the overall proportion was significantly higher among those only reporting mild and moderate activity (88.0% versus 63.3%). Conclusion. The prevalence of most of the barriers studied was higher among those reporting mild and moderate activities and support factors were higher among those reporting vigorous activity. These results highlight the importance of environmental factors, social norms and intra-personal factors in determining the pattern of activity among Egyptian freshmen university students.SAJSM, vol 23 No. 4 2011

scholarly journals Physical activity of UK adults with chronic disease: cross-sectional analysis of accelerometer-measured physical activity in 96 706 UK Biobank participants

2019 ◽  
Author(s):  
Joseph Barker ◽  
Karl Smith Byrne ◽  
Aiden Doherty ◽  
Charlie Foster ◽  
Kazem Rahimi ◽  
...  
Keyword(s):  
Physical Activity ◽  
Chronic Disease ◽  
Confidence Interval ◽  
Chronic Diseases ◽  
Physical Inactivity ◽  
Moderate Activity ◽  
Uk Biobank ◽  
Cross Sectional ◽  
Cross Sectional Analysis ◽  
Sectional Analysis

Abstract Background Physical inactivity is associated with an increased risk of major chronic diseases, although uncertainty exists about which chronic diseases, themselves, might contribute to physical inactivity. The objective of this study was to compare the physical activity of those with chronic diseases to healthy individuals using an objective measure of physical activity. Methods We conducted a cross-sectional analysis of data from 96 706 participants aged 40 years or older from the UK Biobank prospective cohort study (2006–10). Diagnoses were identified through ICD 9 and 10 coding within hospital admission records and a cancer registry linked to UK Biobank participants. We extracted summary physical activity information from participants who wore a wrist-worn triaxial accelerometer for 7 days. Statistical analyses included computation of adjusted geometric means and means using general linear models. Results Participants with chronic disease undertook 9% or 61 minutes (95% confidence interval: 57.8–64.8) less moderate activity and 11% or 3 minutes (95% confidence interval: 2.7–3.3) less vigorous activity per week than individuals without chronic disease. Participants in every chronic-disease subgroup undertook less physical activity than those without chronic disease. Sixty-seven diagnoses within these subgroups were associated with lower moderate activity. Conclusions The cross-sectional association of physical activity with chronic disease is broad. Given the substantial health benefits of being physically active, clinicians and policymakers should be aware that their patients with any chronic disease are at greater health risk from other diseases than anticipated because of their physical inactivity.

Compliance With Vigorous Physical Activity Guidelines in Brazilian Adults: Prevalence and Correlates

2004 ◽  
Vol 1 (4) ◽  
pp. 389-397 ◽  
Author(s):  
Pedro Curi Hallal ◽  
Fernando Vinholes Siqueira
Keyword(s):  
Public Health ◽  
Physical Activity ◽  
Vigorous Physical Activity ◽  
Population Based ◽  
Short Version ◽  
Moderate Activity ◽  
Vigorous Activity ◽  
Cross Sectional ◽  
Physical Activity Guidelines ◽  
Face To Face

Background:Physical inactivity is now a public health priority because of the high rates of inactivity observed worldwide. Achievement of physical activity guidelines could be attained with vigorous, moderate, or both activities combined. Our aim was to explore the prevalence and correlates of compliance with vigorous physical activity guidelines (CVAG).Methods:Cross-sectional population-based survey in Pelotas, a southern Brazilian city, including 3182 adults (≥ 20 years). The short version of the International Physical Activity Questionnaire was applied by face-to-face interviews. CVAG was defined as at least 60 min/wk of vigorous activity.Results:Only 29% of the subjects achieved the vigorous activity threshold. Women, older adults, individuals with low BMI (< 18.5 kg/m2) or obese (≥ 30 kg/m2) were less likely to present CVAG. Compliance with moderate activity guidelines was associated with a higher likelihood of CVAG.Conclusions:Concurrent promotion of moderate and vigorous physical activities is warranted in terms of public health.

scholarly journals Daily Sitting for Long Periods Increases the Odds for Subclinical Atheroma Plaques

2021 ◽  
Vol 10 (6) ◽  
pp. 1229
Author(s):  
Jose Luis Perez-Lasierra ◽  
Martin Laclaustra ◽  
Pilar Guallar-Castillón ◽  
Jose Antonio Casasnovas ◽  
Jose Antonio Casajús ◽  
...  
Keyword(s):  
Physical Activity ◽  
Subclinical Atherosclerosis ◽  
Sitting Time ◽  
Health Study ◽  
Activity Levels ◽  
Cross Sectional ◽  
Trained Personnel ◽  
Atherosclerosis Development ◽  
Sectional Analysis ◽  
The Relationship

Sedentarism is a risk factor for cardiovascular disease (CVD), but currently it is not clear how a sedentary behavior such as long sitting time can affect atherosclerosis development. This study examined the relationship between sitting time and the prevalence of carotid and femoral subclinical atherosclerosis. A cross-sectional analysis based on a subsample of 2082 participants belonging to the Aragon Workers’ Health Study was carried out. Ultrasonography was used to assess the presence of plaques in carotid and femoral territories; the validated Spanish version of the questionnaire on the frequency of engaging in physical activity used in the Nurses’ Health Study and the Health Professionals’ was used to assess physical activity and sitting time; and demographic, anthropometric, and clinical data were obtained by trained personnel during the annual medical examination. Participants were categorized into <9 h/day and ≥9 h/day sitting time groups. After adjusting for several confounders, compared with participants that remain seated <9 h/day, those participants who remain seated ≥9 h/day had, respectively, OR = 1.25 (95%CI: 1.01, 1.55, p < 0.05) and OR = 1.38 (95%CI: 1.09, 1.74, p < 0.05) for carotid and any-territory plaque presence. Remaining seated ≥9 h/day is associated with higher odds for carotid and any-territory plaque presence independently of physical activity levels and other cardiovascular risk factors.

scholarly journals Physical Activity and Risk of Type 2 Diabetes Among Native Hawaiians, Japanese Americans, and Caucasians: The Multiethnic Cohort

2012 ◽  
Vol 9 (5) ◽  
pp. 634-641 ◽  
Author(s):  
Astrid Steinbrecher ◽  
Eva Erber ◽  
Andrew Grandinetti ◽  
Claudio Nigg ◽  
Laurence N. Kolonel ◽  
...  
Keyword(s):  
Physical Activity ◽  
Ethnic Groups ◽  
Cox Regression ◽  
Diabetes Risk ◽  
Self Report ◽  
Japanese Americans ◽  
Japanese American ◽  
Moderate Activity ◽  
Inverse Association ◽  
Multiethnic Cohort

Background:Physical inactivity is an established risk factor for diabetes; however, little is known about this association across ethnic groups with different diabetes risk. Therefore, we evaluated the association between physical activity and diabetes and potential effect modification by ethnicity in the Hawaii component of the Multiethnic Cohort.Methods:Participants, aged 45 to 75 years, were enrolled by completing a questionnaire on demographics, diet, and self-reported weekly hours of strenuous sports, vigorous work, and moderate activity. Among the 74,913 participants (39% Caucasian, 14% Native Hawaiian, 47% Japanese American), 8561 incident diabetes cases were identified by self-report, a medication questionnaire, and through health plan linkages. Cox regression was applied to estimate hazard ratios (HR) and 95% confidence intervals (95%CI) while adjusting for known confounders.Results:Engaging in strenuous sports was inversely related to diabetes risk with HRs (4+ hours/week vs. never) of 0.67 (95%CI: 0.57–0.79) in women and 0.80 (95%CI: 0.72–0.88) in men. In stratified analyses, the inverse association was consistent across ethnic groups. The inverse association of vigorous work with diabetes was limited to men, while beneficial effects of moderate activity were observed only in Caucasians.Conclusions:These findings support a role of high-intensity physical activity and ethnic-specific guidelines in diabetes prevention.

Sign in / Sign up

Export Citation Format

Share Document