scholarly journals FLUCTUATIONS IN HEART RATE RESPONSE AND EXTERNAL DEMANDS RELATIVE TO GAME PERIOD IN RECREATIONAL FOOTBALL

2019 ◽  
pp. 015
Author(s):  
Emilija Stojanović
Keyword(s):  
College Students ◽  
Heart Rate ◽  
Physical Fitness ◽  
Fat Mass ◽  
Effect Size ◽  
High Intensity ◽  
Heart Rate Response ◽  
Football Players ◽  
Paired Sample ◽  
Male College

This study aimed to investigate fluctuations in external demands and heart rate (HR) response across two game periods (half-times) in recreational football players. Eighteen recreationally active, male college students (goalkeepers: n = 2; outfield players: n = 16; age: 20.9 ± 1.5 yr; height: 179.4 ± 5.0 cm; body mass: 76.9 ± 8.1 kg; fat mass: 15.3 ± 5.5%) participated in this study. Two sessions were used to administer 4-a-side small-side games (SSG). Differences in activity demands and HR response were analyzed using a paired sample t-test. The magnitude of the differences in each dependent variable was quantified with effect size (ES) analyses and interpreted as: trivial, <0.2; small, 0.2–0.59; moderate, 0.6–1.19; large, 1.2–1.99; very large, >2. An ES analysis showed, small to moderate, significant decreases in distance covered at 0-6.00 km·h-1 (ES = -0.54, small), 6.01-12.00 km·h-1 (ES = -0.99, moderate), 12.01-18.00 km·h-1(ES = -0.66, moderate), >24 km·h-1 (ES = -0.72, moderate), total distance (ES = -0.91, moderate) and high-intensity accelerations (ES = -0.60, moderate) during the second rather than the first half. In addition, unclear significant decreases in HRmean, and percentage of time spent working 81-90% HRmax were observed across two game periods. Our findings indicate game-related fatigue, whereby players demonstrated a consistent HR response across two game periods despite diminutions in activity demands during the second half. Similarities in HR response across two game periods might be due to the lower physical fitness of recreational players, eliciting slower HR recovery.

Impact of a combined diet and progressive exercise intervention for overweight and obese children: the B.E. H.I.P. study

2011 ◽  
Vol 36 (4) ◽  
pp. 515-525 ◽  
Author(s):  
Patricia K. Doyle-Baker ◽  
Allison A. Venner ◽  
Martha E. Lyon ◽  
Tak Fung
Keyword(s):  
Heart Rate ◽  
Waist Circumference ◽  
Fat Mass ◽  
High Intensity ◽  
High Intensity Exercise ◽  
Obese Children ◽  
Intervention Programme ◽  
Progressive Exercise ◽  
Exercise Class ◽  
Health Intervention Programme

The Biochemical Evaluation of a Health Intervention Programme (B.E. H.I.P.) investigated the impact of progressive exercise intensity in overweight and obese children. A 5-month prospective randomized crossover design (XA, immediate intervention; OB, control group; XB, delayed intervention, OA, postintervention follow-up) with a 10-week health intervention programme was employed. The intervention utilized a progressive increase in high-intensity exercise (≥75% maximum heart rate) and included 3 nutrition and 2 parent education sessions. Primary analysis was completed with (i) XA versus OB and (ii) all intervention participants (collapsed XA and XB = XAXB). Prepubertal overweight and obese male and female children (n = 27) between 5 and 10 years of age were randomly allocated to XA (n = 16; 11 females; waist circumference = 80.0 ± 10.6 cm) or OB (n = 11; 3 females; waist circumference = 76.6 ± 7.5 cm). The primary variables were heart rate and percent fat mass. All variables, including body composition, habitual activity, and serum lipids, were repeatedly measured for up to a maximum of 7 time points. Energy expenditure was quantitatively measured throughout each exercise class (n = 20). A significantly longer time in the exercise sessions was spent in high-intensity (35.1%–60.0%) versus low- to moderate-intensity (64.9%–40.0%) exercise as the intervention progressed from the first to the last attended exercise class (Fisher exact test, p < 0.0001). The percent fat mass decreased in all intervention participants (–2.2%, p < 0.0001). XA had a greater slope decrease than OB for percent fat mass (p = 0.00051) and triglycerides (p = 0.0467). In conclusion, high-intensity exercise, within a comprehensive health programme that includes nutrition education, improved the lipid and physiological health profiles of obese children.

Heart Rate Response to Exercise

2018 ◽  
pp. 437-445
Author(s):  
Gregory S. Thomas
Keyword(s):  
Heart Rate ◽  
Physical Fitness ◽  
Sample Size ◽  
Older Persons ◽  
Heart Rate Response ◽  
Large Sample Size ◽  
Maximum Heart Rate ◽  
Large Sample ◽  
Response To Exercise

The chapter Heart Rate Response to Exercise reviews the studies performed to estimate a patient’s maximum predicted heart rate. While the commonly used formula (220 – age), developed in 1971, is easy to remember, it underestimates the actual maximum heart rate in older persons. Studies of large sample size have found the maximum heart rate to be relatively independent of sex and physical fitness but to incrementally decline with age. The decrease with age is less than 1 beat per minute per year, however. A more accurate and recommended formula is [(208) – (0.7)(age)] as developed by Tanaka and colleagues.

Prevalence of Risk of Eating Disorders and its Association with Obesity and Fitness

2020 ◽  
Vol 41 (10) ◽  
pp. 669-676
Author(s):  
Isabel María Parreño-Madrigal ◽  
Ana Díez-Fernández ◽  
Vicente Martínez-Vizcaíno ◽  
María Eugenia Visier-Alfonso ◽  
Miriam Garrido-Miguel ◽  
...  
Keyword(s):  
College Students ◽  
At Risk ◽  
Eating Disorders ◽  
Physical Fitness ◽  
Cardiorespiratory Fitness ◽  
Fat Mass ◽  
Future Health ◽  
Muscular Fitness ◽  
Cross Sectional ◽  
Mean Values

AbstractThe university stage is a critical developmental period for young adults, where lifestyles can determine future health. A cross-sectional study including 481 college students was conducted, with the following objectives: 1) to examine the prevalence of risk of developing eating disorders in college students, 2) to assess differences in obesity and physical fitness in those with and without risk of eating disorders, and 3) to determine whether cardiorespiratory fitness, muscular fitness or fat mass were associated with the risk of eating disorders. We measured fat mass percentage (by densitometry), risk of feeding or eating disorders (by SCOFF questionnaire), cardiorespiratory fitness levels and a muscular fitness index. The prevalence of risk of eating disorders in women (32.4%) was higher than in men (17.4%) (p<0.001). In both sexes, higher obesity indicator mean values were observed among those who were at risk of eating disorders. Men participants without risk had higher cardiorespiratory fitness means than their at-risk peers [39.4 (8.3) vs. 32.4 (5.5), p<0.001)], and women showed differences only in the dynamometry/weight variable. In college students, it is necessary to promote healthy habits, including good levels of physical fitness, and to prevent excess body fat to effectively prevent eating disorders.

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

2015 ◽  
Vol 27 (06) ◽  
pp. 1550055
Author(s):  
Ren-Guey Lee ◽  
Chih-Yang Chen ◽  
Chun-Chieh Hsiao ◽  
Robert Lin
Keyword(s):  
College Students ◽  
Heart Rate ◽  
Physical Fitness ◽  
Cardiorespiratory Fitness ◽  
Heart Rate Recovery ◽  
Step Test ◽  
Exercise Heart Rate ◽  
Regular Exercise ◽  
Heart Rate Monitoring

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.

School-Based High-Intensity Interval Training Programs for Promoting Physical Activity and Fitness in Adolescents: A Systematic Review

2021 ◽  
pp. 1-13
Author(s):  
André Filipe Paulino da Silva Bento ◽  
Luis Carrasco Páez ◽  
Armando Manuel de Mendonça Raimundo
Keyword(s):  
Physical Activity ◽  
Physical Education ◽  
Physical Fitness ◽  
Effect Size ◽  
High Intensity ◽  
Interval Training ◽  
High Intensity Interval Training ◽  
Moderate Effect Size ◽  
Moderate Effect ◽  
High Intensity Interval

Purpose: This review aimed to evaluate the utility of high-intensity interval training (HIIT) programs integrated into physical education classes. Method: Searches of electronic databases from January 2008 to March 2020. Inclusion criteria: Applied to adolescents aged 10–19 years; applied in school settings; reported results on physical fitness, physical activity (PA), and motivation; at least for 4 weeks; and randomized controlled trials. Studies with adolescents with physical or intellectual limitations were excluded, as well as other interventions parallel to HIIT. Results: Fourteen studies were included. All works present significant improvements in physical fitness and PA. Improvements in body composition recorded, at most, a moderate effect size. HIIT is presented as a powerful stimulus on cardiorespiratory fitness. Improvements in PA registered, a least, a moderate effect size. Conclusions: HIIT in the school context has great potential in improving physical fitness and PA in adolescents. HIIT efficiency (about 10 min) reflects the wide applicability that these protocols can have in physical education classes and great adaptation to the facilities.

Physiological Response, Time–Motion Characteristics, and Reproducibility of Various Speed-Endurance Drills in Elite Youth Soccer Players: Small-Sided Games Versus Generic Running

2014 ◽  
Vol 9 (3) ◽  
pp. 471-479 ◽  
Author(s):  
Jack D. Ade ◽  
Jamie A. Harley ◽  
Paul S. Bradley
Keyword(s):  
Heart Rate ◽  
Blood Lactate ◽  
High Intensity ◽  
Heart Rate Response ◽  
Lactate Concentration ◽  
Blood Lactate Concentration ◽  
Soccer Players ◽  
Youth Soccer ◽  
Time Motion ◽  
Motion Characteristics

Purpose:To quantify the physiological responses, time–motion characteristics, and reproducibility of various speed-endurance-production (SEP) and speed-endurance-maintenance (SEM) drills.Methods:Sixteen elite male youth soccer players completed 4 drills: SEP 1 v 1 small-sided game (SSG), SEP running drill, SEM 2 v 2 SSG, and SEM running drill. Heart-rate response, blood lactate concentration, subjective rating of perceived exertion (RPE), and time–motion characteristics were recorded for each drill.Results:The SEP and SEM running drills elicited greater (P < .05) heart-rate responses, blood lactate concentrations, and RPE than the respective SSGs (ES 1.1–1.4 and 1.0–3.2). Players covered less (P < .01) total distance and high-intensity distance in the SEP and SEM SSGs than in the respective running drills (ES 6.0–22.1 and 3.0–18.4). Greater distances (P < .01) were covered in high to maximum acceleration/deceleration bands during the SEP and SEM SSGs than the respective running drills (ES 2.6–4.6 and 2.3–4.8). The SEP SSG and generic running protocols produced greater (P < .05) blood lactate concentrations than the respective SEM protocols (ES 1.2–1.7). Small to moderate test–retest variability was observed for heart-rate response (CV 0.9–1.9%), RPE (CV 2.9–5.7%), and blood lactate concentration (CV 9.9–14.4%); moderate to large test–retest variability was observed for high-intensity-running parameters (CV > 11.3%) and the majority of accelerations/deceleration distances (CV > 9.8%) for each drill.Conclusions:The data demonstrate the potential to tax the anaerobic energy system to different extents using speed-endurance SSGs and that SSGs elicit greater acceleration/deceleration load than generic running drills.

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