Validity Of Heart Rate Research Articles

Integrating the wrist-worn tracker in cardiac rehabilitation programmes: a scoping review

Background/Aims Physical activity has been recommended as a secondary prevention strategy to reduce the risk of recurrent adverse events and improve health. While it can be challenging for health practitioners to motivate patients to remain physically active, wrist-worn activity trackers can assist in monitoring adherence. The aim of this study was to identify and summarise the existing scientific literature on wrist-worn activity trackers monitoring physical activity among patients undergoing cardiac rehabilitation. The authors also aimed to identify evidence gaps that require further investigation. Methods A systematic search was conducted in the electronic databases in PubMed, Web of Science, Scopus, SPORTDiscus and the Cumulative Index to Nursing and Allied Health Literature. Method quality was appraised using the Preferred Reporting Items for Systematic Reviews and Meta-analysis Extension for Scoping Reviews instrument. The study focused on any physical activity data collected by wrist-worn activity trackers in cardiac rehabilitation. Results A total of 19 relevant records were identified. Wrist-worn activity trackers generally improved the patient's physical activity and the validity of heart rate and step count measurements was acceptable. Conclusions Wrist-worn activity trackers can help to monitor patients' physical activity when undergoing cardiac rehabilitation. Further research is necessary to strengthen the evidence that wrist-worn activity trackers may be beneficial to evaluate clinical outcomes, determine the intervention cost, acceptability of patients and allied health professionals, as well as explore feedback, including technical issues.

Heart Rate Accuracy Of The Jabra Earbuds And Scosche Armband Using Consumer Technology Association Standards

While the Consumer Technology Association (CTA) has released guidelines regarding the validation of heart rate (HR) sensing wearable devices, few investigations have implemented these standards. PURPOSE: To evaluate the accuracy of commercially available HR monitors using CTA guidelines. METHODS: Participants (n = 22) simultaneously wore a Polar chest strap, Jabra Elite earbuds, and Scosche Rhythm 24 armband during sitting, activities of daily living, walking, jogging, running, and cycling, totaling 57 minutes of monitored activity. The chest strap served as the criterion measure for HR comparisons. HR data were obtained every second from the chest strap, earbuds, and armband. Accuracy was assessed for each device within each activity via mean bias, mean absolute percent error (MAPE), and intraclass correlation coefficient (ICC). A device was considered accurate if the MAPE was <10% in combination with ICC > 0.90. RESULTS: The Jabra earbuds registered zero as a HR during the sedentary condition (48, 0.6%), lifestyle condition (225, 1.3%), walking (178, 1.8%), walk.jog (739, 4.5%), running (333, 3.4%), and cyling (295, 1.8%). The Scosche device did not have any zeroes registered as HR, so no data points were removed from analysis for the devices. The Jabra mean bias was within ±5 bpm for each condition, except cycling, which was higher (6.88 bpm). MAPE exceeded 10% for walk-jog, was 7-8% for lifestyle, walking, running, and cycling, and was <5% for the sedentary condition. ICCs were below 0.90 for lifestyle and walking, equal to 0.90 for dynamic walk-jog and cycling, and greater than 0.92 for sedentary and running. The Schosche mean bias was within ±1 bpm and MAPE was <5% for all conditions. The ICCs were 0.94 or higher for all conditions. CONCLUSIONS: Acceptable HR agreement was observed for the Jabra Elite earbuds in the sedentary, running, and cycling conditions but not during lifestyle tasks, walking, or the dynamic walk-jog. The Schosche Rhythm 24 displayed acceptable HR agreement across all conditions.

Review of Validity and Reliability of Garmin Activity Trackers.

A systematic review to summarize the validity and reliability of steps, distance, energy expenditure, speed, elevation, heart rate, and sleep assessed by Garmin activity trackers. Searches included studies published through December 31, 2018. Correlation coefficients (CC) were assessed as low (<0.60), moderate (0.60-<0.75), good (0.75-<0.90), or excellent (>=0.90). Mean absolute percentage errors (MAPE) were assessed as acceptable at <5% in controlled conditions and <10% for free-living. Overall, 32 studies of adults documented validity. Four of these studies also documented reliability. The sample size ranged from 1 to 95 for validity and 4 to 31 for reliability testing. Step inter- and intra-reliability was good-to-excellent and speed intra-reliability was excellent. No other features were explored for reliability. Step validity, across 16 studies, generally indicated good-to-excellent CC and acceptable MAPE. Distance validity, tested in three studies, generally indicated poor CC and MAPE that exceeded acceptable limits, with both over and underestimation. Energy expenditure validity, across 12 studies, generally indicated wide variability in CC and MAPE that exceeded acceptable limits. Heart rate validity in five studies had low-to-excellent CC and all MAPE exceeded acceptable limits. Speed, elevation, and sleep validity were assessed in only one or two studies each; for sleep, the criterion relied on self-report rather than polysomnography. This systematic review of Garmin activity trackers among adults indicated higher validity of steps; few studies on speed, elevation, and sleep; and lower validity for distance, energy expenditure, and heart rate. Intra- and inter-device feature reliability needs further testing.

Reliability and Validity of Heart Rate Monitors Bodypro_PAPS(DS100) by using wireless communication.

Reliability and Validity of Heart Rate Monitors Bodypro_PAPS(DS100) by using wireless communication.

Heart rate indicators for assessing physical activity level in the field.

The reliability and validity of heart rate (HR) indicators for assessing physical activity level (PAL) was examined in 16 male and female farmers in northeast Thailand. For each subject, daytime HRs were monitored for 12 days, 4 days each in three agricultural seasons in a year. At the group level, the percentage of time when HR exceeded flex-HR (%Flex) had the highest reliability as an indicator of PAL even in the season of lowest activity (r > 0.91 in males and r > 0.89 in females). Regarding the reliability of each subject's %Flex for assessing PAL, regression analyses revealed coefficients of determination of 0.73-0.97 in males and 0.62-0.97 in all females except one. Analyses of covariance (ANCOVA), with %Flex as a covariate, showed that the difference among the slopes of PAL of different subjects was not significant in females, but was in males (P = 0.003). Comparison of measured PAL values and corresponding PAL values estimated by a regression equation for all subjects showed that 75% were within +/-0.2; further, PAL values tended to be underestimated in cases when they exceeded 2.0 for males. The results for these Thai-Lao subjects are consistent with previous studies on other populations; thus, it may be concluded that %Flex is reliable and valid for assessing PAL for a group of subjects and for assessing intraindividual variability of PAL. Am. J. Hum. Biol. 11:647-657, 1999. Copyright 1999 Wiley-Liss, Inc.

Validity of Heart Rate, Pedometry, and Accelerometry for Estimating the Energy Cost of Activity in Hong Kong Chinese Boys

This study compared the accuracy of heart rate monitoring, pedometry, and uniaxial and triaxial aecelerometry for estimating oxygen consumption during a range of activities in Hong Kong Chinese boys. Twenty-one boys, aged 8–10 years, walked and ran on a treadmill, played catch, played hopscotch, and sat and crayoned. Heart rate, uniaxial and triaxial accelerometry counts, pedometry counts, and scaled oxygen uptake (SVO2) were measured. All measures correlated significantly with VO2 scaled to body mass−0.75 (SVO2). The best predictor of SVO2 was triaxial accelerometry (R2 = 0.89). Correlations in this study were comparable with those in a previous study that used identical methods on 30 UK boys and girls. These results provide further confirmation that triaxial accelerometry provides the best assessment of energy expenditure and that pedometry offers potential for large population studies.

The Validity of Heart Rate and Blood Pressure Determinations as Measures of Physical Fitness

The Validity of Heart Rate and Blood Pressure Determinations as Measures of Physical Fitness