HEART RATE MONITORING SYSTEMS IN GROUPS FOR RELIABILITY AND VALIDITY ASSESSMENT OF CARDIORESPIRATORY FITNESS ANALYSIS

According to statistics in Taiwan, the proportion of students engaged in regular exercise has declined drastically with the increase in education level. This study thus aims to provide a platform for monitoring of group cardiorespiratory fitness to allow users such as teachers or coaches to easily monitor a group’s exercise condition, intensity and duration to increase exercise efficiency, promote exercise motivation and reduce exercise risk. Based on group measurement concept and wearable chest strap textiles integrated with heart rate monitoring devices, teachers or coaches can immediately acquire and display all heart rate information on a notebook computer together with synchronous field projection display. The acquired heart rate data can also be automatically recorded and analyzed to assist in assessing the physical fitness. Our proposed platform aims to monitor the cardiorespiratory fitness in group mainly for college students and young office worker. To validate the stability of our platform in the long term, we recruited the college students in a physical fitness class, 35 in total, as the subjects for long term observation. In the experiments the subjects are divided into “varsity group” and “sedentary group” according to whether they are with or without regular exercise habits. Subjects wearing chest straps were instructed to take the 3-minute Step Test and the 5-minute constant intensity exercise test. The results show that the “varsity group” has a lower resting heart rate ([Formula: see text][Formula: see text]bpm vs. [Formula: see text][Formula: see text]bpm), a lower exercise heart rate ([Formula: see text][Formula: see text]bpm vs. [Formula: see text][Formula: see text]bpm) and a lower mean heart rate ([Formula: see text][Formula: see text]bpm vs. [Formula: see text][Formula: see text]bpm). The “Varsity group” also has a higher heart rate recovery percentage at the first minute ([Formula: see text] vs. [Formula: see text]) and the second minute ([Formula: see text] vs. [Formula: see text]). Moreover, all these indexes have a high correlation with the fitness index in the 3-minute Step Test, among which the percentage of heart rate recovery in the first minute shows the highest positive correlation ([Formula: see text], [Formula: see text]). Our wearable heart rate monitoring system can thus be deemed as effective to provide a platform for measurement of group heart rates and for assessment of cardiorespiratory fitness.

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Comparison of heart rate recovery between normotensive young adults with and without a parental history of hypertension

Asian Journal of Medical Sciences ◽

10.3126/ajms.v11i3.27569 ◽

2020 ◽

Vol 11 (3) ◽

pp. 31-36

Author(s):

Satyajit Bagudai ◽

Hari Prasad Upadhyay

Keyword(s):

Heart Rate ◽

Young Adults ◽

Heart Rate Recovery ◽

Step Test ◽

Exercise Heart Rate ◽

Parental History ◽

Recovery Index ◽

Significant Difference ◽

History Of ◽

The Difference

Introduction: Studies have reported that off springs of hypertensive parents are more likely to develop hypertension. Affection of target organ starts even before the diagnosis of hypertension. Autonomic dysfunction may be the initial cardiac effects in the pathogenesis of hypertension. Till now very few studies have been done to find the early outcomes in the cardiac autonomic functions in the normotensive siblings of hypertensive patients. Heart rate recovery after exercise is a useful marker for cardiac autonomic function. Since the etio-pathogenesis of hypertension is expected to affect the autonomic cardiovascular parameters even before the prehypertensive stage, the following study was carried out to analyze the heart rate recovery, in the descendent non- hypertensive young adults with and without parental history of hypertension. Aim and objective: This research study was aimed to study the quantify and compare the difference (if any) of heart rate recovery in response to 3minute step test between non hypertensive children of non- hypertensive and hypertensive parents within an age group of 18-22 years. Material &Methods: A total of 63 normotensive students were divided into one hypertensive parents(HP) group containing students with parental history of hypertension) and one non hypertensive parents group (NHP) having students without parental history of hypertension). Each student was subjected to 3 minute Master step test. Recordings of heart rate were made before and after exercise. Heart rate recovery index (HRRI) of 1minute (HRRI1), as well as in 2, 3 and 4 minute (HRRI2, HRRI3, HRRI4) were calculated and analyzed. Results: The resting (basal) heart rate as well as 1st minute heart rate recovery index (HRRI1) was not significantly different in the two groups. Likewise, the 2nd minute (HRRI2), 3rd minute (HRRI3), and 4th minute HRRI (HRR4) respectively were also not significantly different between the two groups. Conclusion: This study concluded that there is no significant difference in heart rate recovery among non-hypertensive young adults, with and without parental history of hypertension.

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The Physical Fitness Level, Heart Rate, and Heart Rate Recovery among Adolescent Smokers and Non-smokers

Open Access Macedonian Journal of Medical Sciences ◽

10.3889/oamjms.2021.5805 ◽

2021 ◽

Vol 9 (T4) ◽

pp. 101-105

Author(s):

Nurvita Risdiana ◽

Syahruramdhani Syahruramdhani ◽

Armain Suwitno

Keyword(s):

Heart Rate ◽

Physical Fitness ◽

Quantitative Research ◽

Heart Rate Recovery ◽

Health Indicators ◽

Step Test ◽

Cross Sectional ◽

Fitness Level ◽

Adolescent Smokers ◽

Measurement Results

BACKGROUND: Physical fitness level (PFL), heart rate (HR), and HR recovery (HRR1) were expressed the physical performance of an individual which can be the excellent indicators of health. That parameter differentiates the physical condition between a smoker and a non-smoker. At present, studies about them for adolescent smokers and non-smokers are still limited. Furthermore, they can be the prediction of the health indicators in the future. AIM: The aim of the study was to compare the PFL, HR, and HRR between adolescent smokers and non-smokers METHODOLOGY: This study was conducted by non-experimental and quantitative research with descriptive comparative design and cross-sectional approach. Mann–Whitney test used to describe the distinction between the PFL of students who are adolescent smokers and adolescent non-smokers. The sample data consist of 65 participants selected by purposive sampling collected using Harvard step test and manual HR measurement. RESULTS: After gathered data, we concluded that the PFL of adolescent non-smokers in our samples was significantly higher than smokers with recorded results of p = 0.001 (p < 0.05); HR1, HR60, HR90, and HR180 in adolescent smokers were higher than non-smokers with p = 0.00 (p < 0.05); there were no differences between HRR1 in adolescent smokers and non-smokers with p = 0.042 (p > 0.05). Smoking had effects on PFL and HR. CONCLUSION: The PFL and HR in adolescent non-smokers were better than in smokers but it had no effect on HRR1.

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Abstract P287: Cardiorespiratory Fitness is Associated With Ambulatory Blood Pressure in Adolescents

Circulation ◽

10.1161/circ.137.suppl_1.p287 ◽

2018 ◽

Vol 137 (suppl_1) ◽

Author(s):

Eunduck Park ◽

Devin Volding ◽

Wendell Taylor ◽

Wenyaw Chan ◽

Janet Meininger

Keyword(s):

Blood Pressure ◽

Heart Rate ◽

Cardiorespiratory Fitness ◽

Ambulatory Blood Pressure ◽

Cardiovascular Health ◽

Heart Rate Recovery ◽

Step Test ◽

Central Adiposity ◽

Cross Sectional ◽

Unit Increase

Introduction: Low cardiorespiratory fitness (fitness) and high levels of adiposity are independently associated with higher levels of blood pressure in adolescents. However, it remains uncertain whether the associations between fitness and blood pressure are due to fitness itself or results from lower levels of adiposity. Moreover, there are no studies that have determined the extent to which adiposity, including central adiposity, moderates the association between fitness and 24-hour ambulatory blood pressure (ABP). Hypotheses: 1. Higher levels of fitness will be associated with lower levels of ambulatory systolic (SBP) and diastolic (DBP) blood pressure after adjusting for adiposity and covariates. 2. With adjustments for covariates, adiposity (body mass index [BMI], waist circumference [WC]) will modify the association between fitness and 24-hour SBP and DBP. Methods: A cross-sectional study was conducted in Houston, TX with a sample of 370 adolescents aged 11-16 years. Demographically, the sample was 54% female, 37% African American, 31% Hispanic, 29% non-Hispanic white, and 3% other ethnic/racial groups. Fitness was assessed by a height-adjusted step test and estimated by heart rate recovery, defined as the difference between peak heart rate during exercise and heart rate two minutes post-exercise. Adiposity was measured using dichotomized values for percentiles of BMI (≥ 85 th ) and WC (≥ 50 th ). Ambulatory SBP and DBP (Spacelabs model 90207) were measured every 30-60 minutes over 24 hours on a school day. Mixed-effects regression analysis was used to test the hypotheses with the following covariates: activity, location, and position at the time of each ABP measurement, height, age, sex, ethnicity, sexual maturation level, and mother’s education level. Results: Hypothesis 1: Each unit increase in fitness was associated with a decrease of SBP (-0.058 mmHg, p = 0.001) and DBP (-0.043 mmHg, p < 0.0001) after adjustment for WC and covariates. Each unit increase in fitness was associated with a decrease in SBP (-0.058 mmHg, p = 0.001) and DBP (-0.045 mmHg, p < 0.0001) after adjustment for BMI and covariates. Hypothesis 2: Fitness and BMI ≥ 85 th percentile (or WC ≥ 50 th percentile) interactions were not significantly associated with ambulatory SBP or DBP after adjustment for covariates. Conclusions: Our findings indicate a small but statistically significant inverse effect of fitness on 24-hour ABP in adolescents, and no evidence of a modifying effect of adiposity on this association. Further research is needed to better understand the protective role of fitness on cardiovascular health in adolescents.

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Cardiac Autonomic Modulation of Heart Rate Recovery in Children with Spina Bifida

International Journal of Sports Medicine ◽

10.1055/a-1393-6472 ◽

2021 ◽

Author(s):

Marisa Maia Leonardi-Figueiredo ◽

Gabriela Barroso de Queiroz Davoli ◽

Amanda Evangelista Avi ◽

Julio Cesar Crescêncio ◽

Silvia Cristina Moura-Tonello ◽

...

Keyword(s):

Heart Rate ◽

Spina Bifida ◽

Physical Fitness ◽

Children And Adolescents ◽

Heart Rate Recovery ◽

Recovery Phase ◽

Gas Analysis ◽

Exercise Heart Rate ◽

O2 Pulse ◽

Analysis System

AbstractWe aimed to analyse cardiac autonomic control by assessing the post-exercise heart rate recovery (HRR) and physical fitness in children and adolescents with spina bifida (SB), compared to participants with typical development. A total of 124 participants, 42 with spina bifida (SB group) and 82 typical developmental controls (CO group) performed the arm cranking exercise test with a gas analysis system. HRR was determined at the first (HRR_1) and second (HRR_2) minute at recovery phase. Data are shown as [mean difference (95% CI)]. The SB group showed reduced HR reserve [14.5 (7.1–22.0) bmp, P<0.01], slower HRR_1 [12.4 (7.4–17.5) bpm, P<0.01] and HRR_2 [16.3 (10.6–21.9) bpm; P<0.01], lower VO2peak [VO2peak relative: 7.3 (4.2–10.3) mL·min−1·kg−1, P<0.01; VO2peak absolute: 0.42 (0.30–0.54) L·min−1, P<0.01], and lower O2 pulse [2.5 (1.8–3.2) mL·bpm, P<0.01] and ventilatory responses [13.5 (8.8–18.1) L·min−1, P<0.01] than the CO group. VE/VO2 was not different between groups [−2.82 (−5.77– −0.12); P=0.06], but the VE/VCO2 [−2.59 (−4.40–0.78); P<0.01] and the values of the anaerobic threshold corrected by body mass [−3.2 (−5.8– −0.6) mL·min−1·kg−1, P=0.01] were higher in the SB group than in the CO group. We concluded that children and adolescents with SB have reduced physical fitness and a slower HRR response after maximal effort.

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