scholarly journals The Use of Uniaxial and Triaxial Accelerometers to Measure Children’s “Free-Play” Physical Activity

2000 ◽  
Vol 12 (4) ◽  
pp. 360-370 ◽  
Author(s):  
Alise E. Ott ◽  
Russell R. Pate ◽  
Stewart G. Trost ◽  
Dianne S. Ward ◽  
Ruth Saunders
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Computer Science ◽  
Free Play ◽  
Physical Activities ◽  
Triaxial Accelerometer ◽  
Heart Rate Monitor ◽  
Heart Rates ◽  
Objective Monitoring ◽  
Monitoring Devices

In order to effectively measure the physical activity of children, objective monitoring devices must be able to quantify the intermittent and nonlinear movement of free play. The purpose of this study was to investigate the validity of the Computer Science and Applications (CSA) uniaxial accelerometer and the TriTrac-R3D triaxial accelerometer with respect to their ability to measure 8 “free-play” activities of different intensity. The activities ranged from light to very vigorous in intensity and included activities such as throwing and catching, hopscotch, and basketball. Twenty-eight children, ages 9 to 11, wore a CSA and a heart rate monitor while performing the activities. Sixteen children also wore a Tritrac. Counts from the CSA, Tritrac, and heart rates corresponding to the last 3 min of the 5 min spent at each activity were averaged and used in correlation analyses. Across all 8 activities, Tritrac counts were significantly correlated with predicted MET level (r = 0.69) and heart rate (r = 0.73). Correlations between CSA output, predicted MET level (0.43), and heart rate (0.64) were also significant but were lower than those observed for the Tritrac. These data indicate that accelerometers are an appropriate methodology for measuring children’s free-play physical activities.

scholarly journals Feasibility of a Commercially Available Virtual Reality System to Achieve Exercise Guidelines in Youth With Spina Bifida: Mixed Methods Case Study (Preprint)

2020 ◽  
Author(s):  
Byron Lai ◽  
Drew Davis ◽  
Mai Narasaki-Jara ◽  
Betsy Hopson ◽  
Danielle Powell ◽  
...  
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Virtual Reality ◽  
Spina Bifida ◽  
Moderate Intensity ◽  
Full Time ◽  
Heart Rate Monitor ◽  
Intervention Protocol ◽  
Exercise Guidelines ◽  
Total Average

BACKGROUND Access to physical activity among youth with spina bifida (SB) is much lower than it is for children without disability. Enjoyable home-based exercise programs are greatly needed. OBJECTIVE Our objective is to examine the feasibility of a virtual reality (VR) active video gaming system (ie, bundle of consumer-available equipment) to meet US physical activity guidelines in two youth with SB. METHODS Two youth with SB—a 12-year-old female and a 13-year-old male; both full-time wheelchair users—participated in a brief, 4-week exercise program using a popular VR head-mounted display: Oculus Quest (Facebook Technologies). The system included a Polar H10 (Polar Canada) Bluetooth heart rate monitor, a no-cost mobile phone app (VR Health Exercise Tracker [Virtual Reality Institute of Health and Exercise]), and 13 games. The intervention protocol was conducted entirely in the homes of the participants due to the coronavirus disease 2019 (COVID-19) pandemic. The VR system was shipped to participants and they were instructed to do their best to complete 60 minutes of moderate-intensity VR exercise per day. Exercise duration, intensity, and calories expended were objectively monitored and recorded during exercise using the heart rate monitor and a mobile app. Fatigue and depression were measured via self-report questionnaires at pre- and postintervention. Participants underwent a semistructured interview with research staff at postintervention. RESULTS Across the intervention period, the total average minutes of all exercise performed each week for participants 1 and 2 were 281 (SD 93) and 262 (SD 55) minutes, respectively. The total average minutes of moderate-intensity exercise performed per week for participants 1 and 2 were 184 (SD 103) (184/281, 65.4%) and 215 (SD 90) (215/262, 82.1%) minutes, respectively. One participant had a reduction in their depression score, using the Quality of Life in Neurological Disorders (Neuro-QoL) test, from baseline to postintervention, but no other changes were observed for fatigue and depression scores. Participants reported that the amount of exercise they completed was far higher than what was objectively recorded, due to usability issues with the chest-worn heart rate monitor. Participants noted that they were motivated to exercise due to the enjoyment of the games and VR headset as well as support from a caregiver. CONCLUSIONS This study demonstrated that two youth with SB who used wheelchairs could use a VR system to independently and safely achieve exercise guidelines at home. Study findings identified a promising protocol for promoting exercise in this population and this warrants further examination in future studies with larger samples.

The Influence of Physical Activity on Arterial Pressure during Ambulatory Recordings in Man

1980 ◽  
Vol 58 (1) ◽  
pp. 115-117 ◽  
Author(s):  
D. B. Rowlands ◽  
T. J. Stallard ◽  
R. D. S. Watson ◽  
W. A. Littler
Keyword(s):  
Physical Activity ◽  
Blood Pressure ◽  
Heart Rate ◽  
Arterial Pressure ◽  
Ambulatory Blood Pressure ◽  
Physical Activities ◽  
Hypertensive Patients ◽  
Arterial Blood ◽  
Significant Difference ◽  
Hypotensive Therapy

1. Ambulatory blood pressure recordings were made over a 48 h period on six hypertensive patients. The conditions of study were standardized, particularly with regard to physical activity, and during one period of each day the patients were randomly allocated to be active or inactive. 2. Results show that blood pressure was highest during physical activity and lowest during sleep. There was no significant difference between the arterial pressures measured during the same physical activities carried out at the same time each day. However, during the same time on consecutive days when activity was randomized, there was a significant difference between the pressure recordings during physical activity compared with those during inactivity. Heart rate changes showed a similar trend during the randomized period. 3. Physical activity and sleep have a profound effect on continuous arterial blood pressure recordings and these are independent of time alone. These observations should be taken into account when using this ambulatory system to assess hypotensive therapy.

Perceptions of the Heart-Rate Guide

1998 ◽  
Vol 87 (1) ◽  
pp. 315-320
Author(s):  
Avery D. Faigenbaum ◽  
Joseph Ciccolo ◽  
Joseph R. Libonati
Keyword(s):  
Physical Activity ◽  
College Students ◽  
Heart Rate ◽  
Self Report ◽  
Moderate Intensity ◽  
Target Heart Rate ◽  
Heart Rates ◽  
Moderate Intensity Physical Activity ◽  
Intensity Physical Activity ◽  
Do So

Preliminary assessment was made concerning perceptions of the newly developed bean-rate guide, devised as an educational tool to promote physical activity. Unlike the traditional target heart-rate chart, the heart-rate guide illustrates the value of low to moderate intensity physical activity. Following a brief lecture about the Surgeon General's report on physical activity and health and the usefulness of heart-rate charts and guides, 120 college students ( M age 21.5 ± 2.8 yr.) completed a self-report survey consisting of statements regarding their use of target heart rates during exercise and their perceptions of the new heart-rate guide as compared to the traditional heart-rate chart. 83% of the subjects reported that the new guide better illustrated the findings from the Surgeon General's report, 5% reported no difference between the guide and the chart, and 12% reported that the chart better illustrated the report's findings ( p<.01). 48% never measure their heart rates when they exercise, 48% sometimes measure their heart rates and 4% always do so ( p< 01). While the new guide should not replace the traditional chart, these results suggest that college students perceive the heart-rate guide as a useful tool despite the fact that only a small percentage of students regularly measure their heart rates when they exercise.

scholarly journals Efecto y satisfacción de un programa de actividad física controlada por pulsómetro en el índice de masa corporal de escolares con sobrepeso-obesidad (Effect of and satisfaction with a program of physical activity controlled through heart rate monitors on

Retos ◽  
2017 ◽  
pp. 179-184
Author(s):  
Emilio J Martinez-López ◽  
Jesús Moreno-Cerceda ◽  
Sara Suarez-Manzano ◽  
Alberto Ruiz-Ariza
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Family Health ◽  
The Body ◽  
Control Group ◽  
Heart Rate Monitor ◽  
Sport Practice ◽  
Cohen’S D ◽  
Young Students ◽  
Cohen's D

Sustituir el tiempo sedentario por la práctica sistemática de actividad física (AF) es uno de los grandes retos  educativos y sociales dirigidos a jóvenes con sobrepeso-obesidad. El objetivo principal fue analizar el efecto en el índice de masa corporal (IMC) de un programa de AF extraescolar que empleó el pulsómetro como mecanismo para cuantificar el volumen e intensidad del ejercicio. Participaron 69 escolares con sobrepeso-obesidad de 9 a 12 años. La muestra se aleatorizó en grupo con programa y pulsómetro (GE1, n=23), grupo con solo programa (GE2, n=23), y grupo control que no realizó programa ni empleó pulsómetro (GC, n=23). Los resultados mostraron que GE1 había disminuido el IMC respecto al GC a los dos y tres meses de intervención (-1.65 kg/m2; p=.037, d de Cohen=.786; y -2.02 kg/m2, p=.006, d de Cohen=.895, respectivamente). GE1 incrementó significativamente el tiempo diario de intensidad máxima de AF medida por el pulsómetro (p=.028). El 86.9% y el 60.8% de los alumnos del GE1 y GE2 respectivamente afirmaron estar bastante o totalmente de acuerdo con el ítem “He comprobado que realizo más actividad física diaria que antes”. La mayoría de niños y padres del GE1 consideraron la experiencia como positiva y motivante para realizar más AF. Se concluye que un programa dirigido desde la Educación Física, que combina AF extraescolar y emplea el pulsómetro como mecanismo de control, disminuye el IMC en jóvenes con sobrepeso-obesidad después de dos meses de aplicación, aumenta la motivación por la práctica físico-deportiva, e implica cambios positivos en los hábitos de salud familiares. Abstract. Replacing sedentary time with systematic practice of PA is one of the major social and health challenges of globalized world. The main aim of this research was to analyze the effect of a program based on extracurricular PA, using heart rate monitor to quantify the volume and intensity of PA, on the body mass index (BMI). 69 young students with overweight-obesity aged nine to 12 years participated in this study. The sample was randomly split in two groups: PA program and heart rate monitor (EG1, n=23), PA program without heart rate monitor (EG2, n=23), and control group, whose members did not carry out any program nor used any heart rate monitor (CG, n=23). Results showed that GE1 decreased BMI more than CG after two and three months of intervention (-1.65 kg/m2; p=.037, Cohen’s d=.786; y -2.02 kg/m2, p=.006, Cohen’s d =.895, respectively). G1 significantly increased the daily time of PA at maximum intensity measured by the heart rate monitor (p=.028). 86.9% and 60.8% of students in EG1 and EG2 respectively, were quite or totally in agreement with the item "I have verified that I carry out more physical activity daily than before". The majority of children and parents in EG1 considered the experience as positive and motivating to practice more PA. A program focused on Physical Education and combining extracurricular PA and heart rate monitor as a control mechanism, decreases BMI in overweight-obese young students after two months of application, increases motivation towards PA and sport practice, and implies positive changes in family health habits.

scholarly journals Intensity Analysis for Teenage Indoor Tug-of-War

2010 ◽  
Vol 16 (2) ◽  
pp. 79-83
Author(s):  
Ting Shiuan CHIOU ◽  
Ming Ta YANG ◽  
Kuei Hui CHAN
Keyword(s):  
High School ◽  
Heart Rate ◽  
Junior High School ◽  
Junior High ◽  
English Abstract ◽  
Heart Rate Reserve ◽  
Intensity Analysis ◽  
Heart Rate Monitor ◽  
Heart Rates ◽  
Last Stage

LANGUAGE NOTE | Document text in English; abstract also in Chinese. The purpose of this study was to collect heart rates of subjects by the polar team system heart rate monitor during the championship finals (3 rounds). Eight junior high school indoor tug-of-war athletes participated in the study. The percentage of heart rate reserve (%HRR) was calculated. During the competitions, the lowest heart rate of subjects were 34.5±6.4%HRR ~ 50.8±7.0%HRR. The highest heart rate of subjects were 66.7±6.5%HRR ~ 87.1±6.3%HRR and presented at the last stage of games for a few seconds. In conclusion, when teenage indoor tug-of-war player face contender of the weakness level, their intensity is 52.7±13.4 %HRR. Moreover, when they face contender the same level, their intensity is 72.7 ~ 13.1%HRR. 本研究以8位青少年室內八人制拔河選手為對象，並利用心跳監控器於正式拔河錦標賽決賽中，收集受測者與3場對手比賽時 的全程心跳率，並將心跳率數值換算為儲備心跳率百分比，以評估拔河比賽的運動強度。結果發現，比賽期間受試者最低心跳率介於34.5±6.4 ~ 50.8±7.0%HRR，最高心跳率介於66.7±6.5 ~ 87.1±6.3%HRR，受試者之最高心跳率出現於比賽最後階段且只維持數秒鐘。本研究結果顯示，青少年室內八人制拔河比賽在面對較弱的對手時之運動強度為52.7±13.4%HRR，而對上實力相當的對手時則為72.7±13.1%HRR。

DETERMINATION OF HEART RATES FOR TRAINING USING POLAR SMARTEDGE HEART RATE MONITOR

1998 ◽  
Vol 30 (Supplement) ◽  
pp. 251 ◽  
Author(s):  
R. M.T. Laukkanen ◽  
S. Maijanen ◽  
M. P. Tulppo
Keyword(s):  
Heart Rate ◽  
Heart Rate Monitor ◽  
Heart Rates

The effect of the presence of heart-rate monitors on the behaviour of group housed sows

1996 ◽  
Vol 1996 ◽  
pp. 193-193
Author(s):  
P.J. Baynes ◽  
K. Graham ◽  
E.J. Hunter ◽  
H.J. Guise ◽  
R.H.C. Penny
Keyword(s):  
Heart Rate ◽  
Resting Heart Rate ◽  
Heart Rate Monitor ◽  
Heart Rate Monitors ◽  
Heart Rates ◽  
Group Behaviour

Heart rate has been successfully recorded in sheep, deer and pigs (Baldock and Sibly, (1986) Price, Sibly and Davies, (1993) Webster et al, 1995). This work has shown that resting heart rate can increase in stressful situations. Being able to record heart rates of group-housed sows would complement behavioural observations, if it could be shown that the presence of the monitor did not alter group behaviour. The aim of this study was to assess in a group of active sows, the effect of the presence of a heart rate monitor on behaviour.

scholarly journals Reliability of heart rate mobile apps in young healthy adults: exploratory study and research directions

2017 ◽  
Vol 24 (2) ◽  
pp. 224 ◽  
Author(s):  
Maria Parpinel ◽  
Laura Scherling ◽  
Stefano Lazzer ◽  
Vincenzo Della Mea
Keyword(s):  
Physical Activity ◽  
Heart Rate ◽  
Gold Standard ◽  
Exploratory Study ◽  
Mobile Apps ◽  
Healthy Adults ◽  
Smartphone Apps ◽  
Personal Factors ◽  
Research Directions ◽  
Heart Rates

Background: Recently, a number of smartphone apps appeared that allow for heart rate measurements basing on the photoplethysmography principle. In fact, almost every smartphone now has a camera with flash that could be used for that. Some studies appeared on the reliability of some of those apps, with heterogeneous results.Objectives: The present study aims at adding up evidence in particular during physical activity, by comparing 3 apps on two different platforms (IOs and Android), on a broad range of heart rates. As gold standard, heart rate has been measured with a traditional heart rate monitor.Results: The results suggest that heart rate apps might be used for measuring heart rate for fitness aims for many individuals, but further research is needed to i) analyse influence of smartphone features; ii) identify personal factors hindering measurements, and iii) verify reliability on different measurement sites.

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