scholarly journals ANALYSIS OF ENERGY DEMANDS OF HOCKEY PLAYERS ON THE STAGES OF THE ANNUAL CYCLE

2018 ◽  
pp. 14-18
Author(s):  
А.V. Chernykh ◽  
S.V. Sedochenko ◽  
M.S. Orlov
Keyword(s):  
Heart Rate ◽  
Energy Consumption ◽  
Annual Cycle ◽  
Physical Exertion ◽  
Food Ration ◽  
Heart Rate Monitors ◽  
Method Of Calculation ◽  
Energy Demands ◽  
Significant Difference ◽  
Hockey Players

The object of this study was the energy demands of athletes in different periods of the annual cycle. The aim of the study was to determine the daily energy consumption of athletes (on the example of the hockey team), taking into account individual activity in different periods of the annual cycle, with the ultimate goal to identify the failure of averaged calculations carried out previously for athletes. In the article the technique of calculation energy expenses athletes using the clock readings of heart rate monitors. This technique is quite easy to use and in combination with the traditional method of calculation allows to simplify and specify the calculation of energy consumption at each stage of the annual training mesocycle. As a result of the survey, the main activities of the subjects with timing in each specific period of year cycle were identified, as well as hockey players provided data of their watches-heart rate monitors, at times of physical exertion of a certain intensity. In the study, we have used somatometry (measurement of height and weight), the obtained results were processed by methods of mathematical statistics. Further, according to the formulas, the values of the daily basic exchange and the value of the basic exchange per hour were determined. On the basis of calculations and data provided, the values of energy expenditure of hockey players in each stage of the annual cycle were calculated. The analysis of the obtained data revealed a significant difference in the readings of energy consumption in the competitive, training and recovery periods, which confirms the failure of the averaged calculations conducted earlier. This technique allows to individualize the calculations of this kind, and the accounting of the results, in turn, will create the possibility of adequate replenishment of energy consumption with the help of food ration.

scholarly journals Effect of Changing Match Format from Halves to Quarters on the Performance Characteristics of Male University Field Hockey Players

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5490
Author(s):  
Elliot P. Lam ◽  
Caroline D. Sunderland ◽  
John G. Morris ◽  
Laura-Anne M. Furlong ◽  
Barry S. Mason ◽  
...  
Keyword(s):  
Heart Rate ◽  
High Speed ◽  
National Level ◽  
Performance Characteristics ◽  
Field Hockey ◽  
Heart Rate Monitors ◽  
Total Distance ◽  
Random Intercept ◽  
Hockey Players ◽  
The Uk

The study examined whether the performance characteristics of male university field hockey players differed when the match format was 2 × 35 min halves compared to 2 × 2 × 17.5 min quarters. Thirty-five male university field hockey players (age 21.2 ± 3.0 years, height 1.81 ± 0.07 m, body mass 75.1 ± 8.9 kg), competing at national level in the UK, were monitored over 52 matches played across the 2018–2019 (2 × 35 min halves) and 2019–2020 (2 × 2 × 17.5 min quarters) seasons using 15 Hz Global Positioning System units and heart rate monitors. Total distance, high-speed running distance (≥15.5 km·h−1), accelerations (≥2 m·s−1), decelerations (≤−2 m·s−1), average heart rate and percentage of time spent at >85% of maximum heart rate were recorded during both match formats. Two-level random intercept hierarchal models (Match—level 1, Player—level 2) suggested that the change in format from 2 × 35 min halves (2018–2019 season) to 2 × 2 × 17.5 min quarters (2019–2020 season) resulted in a reduction in total distance and high-speed running distance completed during a match (by 221 m and 120 m, respectively, both p < 0.001). As no significant cross-level interactions were observed (between season and half), the change from 35 min halves to 17.5 min quarters did not attenuate the reduced physical performance evident during the second half of matches (total distance: −235 m less in second half; high-speed running distance: −70 m less in second half; both p < 0.001). Overall, the findings suggest that the change in match format did alter the performance characteristics of male university field hockey players, but the quarter format actually reduced the total distance and high-speed running distance completed during matches, and did not attenuate the reduction in performance seen during the second half of matches.

scholarly journals PROGNOSTIC FACTORS IN SEVERE HEAD INJURY "A CLINICO RADIOLOGICAL STUDY"

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Dr. I. D. Chaurasia ◽  
Dr. Avais Ahmed Khan ◽  
Dr. Neeraj Mane ◽  
Dr. Prateek Malpani ◽  
Dr. M. C. Songara
Keyword(s):  
Heart Rate ◽  
Stress Responses ◽  
Severe Head Injury ◽  
Physiological Responses ◽  
Vital Signs ◽  
Behavioral Responses ◽  
Auditory Stimulation ◽  
Energy Demands ◽  
Significant Difference ◽  
Different Types

Overview:  Infants experience stressors. Stress responses in infants include physiological responses (HR and oxygen saturation) and behavioral responses (behavioral state, motor activity, and signs of behavioral distress). Modulation of the stress response in infants may reduce energy demands and enhance recovery. The characteristics of auditory stimulation provided by music differ from those of other types of auditory stimulation. The infants respond differently to music than to other random noises. This study was carried out to examine the effects of different types of music on vital signs of infants. Methodology: Thirty infants were included in the study. They were divided into two groups. Low and High pitched music was used with for two individual groups. The immediate effect was assessed through pre and post recordings for Heart rate, Reapiratory rate and O2 saturation level. Results: There was statistically significant change in Heart Rate, Respiratory Rate and O2 saturation individually. While comparing post data, except Heart Rate there was no significant difference found with both types of music. Conclusion: Low pitched music has better immediate effect than high pitched music Key words: High pitched music, Low pitched music, Infants

Economic Analysis of Energy Saving Measures in Current Prefabricated Panel Buildings

2016 ◽  
Vol 861 ◽  
pp. 457-465
Author(s):  
Jan Pašek ◽  
Diana Tvrzníková
Keyword(s):  
Energy Consumption ◽  
Service Life ◽  
Economic Analysis ◽  
Lower Energy ◽  
Residential Buildings ◽  
Energy Demands ◽  
Operational Costs ◽  
Significant Difference ◽  
Investment Returns ◽  
Technical Measures

The paper focuses on analysis and assessment of economic effectivity of measures taken in order to lower energy demands of prefabricated panel residential buildings. For this purpose, a group of buildings with previously made modifications with potential to lower the energy and heating consumption were selected. Next, the development of their energy consumption and their costs was monitored. The assessment of achieved figures was made with regards to amount of costs which were paid for these measures and also with regards to their service life, amount of gained subsidy and decrease of consumed energies and operational costs of the buildings after the measures were taken. It was found that there had been a significant difference in investment returns for constituent technical measures. For some of them, it is not even realistic to expect reaching the return of investments during their service life period.

scholarly journals The influence of cycling on the functional state of young athletes 14-15 years old

2020 ◽  
pp. 148-152
Author(s):  
Maryna Prudnikova
Keyword(s):  
Heart Rate ◽  
Functional State ◽  
Vital Capacity ◽  
Physical Exertion ◽  
The Body ◽  
Primary Data ◽  
Mountain Bike ◽  
Young Athletes ◽  
Significant Difference ◽  
Respiratory Systems

At present, due to the constant growth of sports results and intensified competition at competitions of various levels in cycling (MTB), the problem of adaptation of the body to specific physical loads is becoming urgent As you know, the most violent processes in the body of a young man occur in the period from 13 to 15 years old, where all the functions and systems of a young body under the influence of physical exertion are of particular importance. Many works have shown that at a young age it is impossible to predict sports results in a chosen sport without taking into account functional characteristics. The article presents the indicators of the cardiovascular and respiratory systems of the body of young athletes 14-15 years old, who specialize in mountain bike. Under the influence of specific physical loads, changes in the functional state of young athletes of 14-15 years old in the basic, pre-competitive and restorative mesocycles were determined. The aim of the work was to determine the changes in the work of the cardiovascular and respiratory systems of the organism of young athletes 14-15 years old, specializing in mountain bike. A significant difference was found in the indicators of heart rate, maximum oxygen consumption, vital capacity of the lungs in the recovery and maintenance microcycles of the recovery mesocycle. The statistical difference was determined in terms of systolic and diastolic blood pressure (t=2.61; t=2.73; p<0.05), heart rate (t=2.51; p<0.05), vital capacity of the lungs (t=2.28; p<0.05) young athletes 14-15 years old in the recovery and maintenance microcycles of the recovery mesocycle relative to the primary data.

Performance, perceptual and physiological comparison of traditional and small-sided games in youth hockey

2021 ◽  
pp. 174795412199881
Author(s):  
Sarah R Henley-Martin ◽  
Daniel J Hiscock ◽  
Kagan J Ducker ◽  
Angela Jacques ◽  
Carly J Brade
Keyword(s):  
Heart Rate ◽  
Perceived Exertion ◽  
Rating Of Perceived Exertion ◽  
Low Velocity ◽  
Playing Field ◽  
Total Distance ◽  
Movement Data ◽  
Significant Difference ◽  
Hockey Players ◽  
Traditional Format

This study aimed to determine if children playing field hockey small-sided games (SSG) have different levels of physiological, performance and perceptual responses, compared to traditional hockey. Fifteen school hockey players (10–12 y) played eight matches over four months. Traditional games (n = 4) were played on a full-sized pitch with 11 players per team, and SSG were played as two-separate games (n = 8), with 7 players per team on a half-field pitch. Heart rate, movement data and match involvement were collected during the game. Participants were asked their session rating of perceived exertion (sRPE) and completed an enjoyment questionnaire. There were more possessions per player in the SSG format compared to traditional (53.9 ± 2.5 vs. 36.8 ± 6.5, [ d = 3.83]). Number of shots on goal, total goals, penalty corners and circle penetrations were increased in SSG compared to traditional games ( d = 1.11–1.83). Mean and maximum heart rate, sRPE, enjoyment, total distance run, meters per minute, distance run at low velocity and high velocity were similar for both formats, with no significant difference between them. SSG increased match involvements, allowing more participation than the traditional format, without compromising the physiological (e.g. heart rate), performance (e.g. total distance) and perceptual (e.g. sRPE) workload.

scholarly journals Investigating the Effect of Individual Rotations on the Physical and Physiological Performance in Elite Female Field Hockey Players

2021 ◽  
Vol 11 (3) ◽  
pp. 1022
Author(s):  
Aideen McGuinness ◽  
Darren Kenna ◽  
Adam Grainger ◽  
Kieran Collins
Keyword(s):  
Heart Rate ◽  
High Speed ◽  
Maximal Velocity ◽  
Field Hockey ◽  
Match Play ◽  
Total Distance ◽  
Significant Difference ◽  
Hockey Players ◽  
Rate Maximum ◽  
Physiological Demands

To quantify the rotational demands of elite female field hockey with respect to position. Twenty-eight (n = 28) elite international field hockey players were recruited during the 2018–2020 seasons. Players were monitored with GPS technology and heart-rate monitors. Methods: Activity was categorised into total distance (m), relative total distance (m·min−1), high-speed distance (m; 16 km∙h−1), relative high-speed distance (m·min−1), max velocity (km·h−1), and percentage maximal velocity (%Vmax). Physiological demands were assessed via heart rate measures (bpm and % HRmax) and time > 80% heart rate maximum. Results: A single rotation equated to 7 ± 0.8 min. Players covered a mean total distance of was 868 ± 132 m (125.7 ± 5.9 m·min−1) with 140 ± 39 m at high-speed (21.7 ± 3.6 m·min−1). A significant difference was reported for relative total (p ≤ 0.001), and high-speed (p ≤ 0.001), distance across positional. Forwards were reported to cover the most relative total and high-speed distance (d = 1.0) when compared to defenders and midfielders. Conclusion: The study provides normative data for rotational demands of elite female field hockey. Coaches should consider these demands when developing training drills to better optimise the positional physical and physiological demands of competitive match-play.

Electric Cultivator Design and its Impact of the Operator

2014 ◽  
Vol 627 ◽  
pp. 337-341
Author(s):  
Kuang Wen Hsieh ◽  
Chih Shiuan Iu ◽  
Huaang Youh Houng
Keyword(s):  
Carbon Dioxide ◽  
Heart Rate ◽  
Energy Consumption ◽  
Carbon Dioxide Emissions ◽  
Gasoline Engine ◽  
Average Power ◽  
Operating Conditions ◽  
Forward Speed ◽  
Average Power Consumption ◽  
Significant Difference

Small type gasoline engine has the advantage of lightweight and low energy, but its emissions of carbon dioxide will lead to global greenhouse gas growing. This study aims to test the performance of the cultivator between different soil and tools. Comparative test electric and gasoline engine type cultivator contains the following items: energy consumption, carbon dioxide emissions in the job and the operator heart rate change. The results show that the width of 60 cm and depth of 3 cm operating conditions weeding, electric cultivators and gasoline engine cultivator average turn time was 2.9 seconds and 3.3 seconds, with an average forward speed were 0.535 and 0.515 m/s. Comparison of the time and forward speed cornering, the electric cultivator superior gasoline engine cultivator, and can successfully achieve high torque output characteristics weeding needed. Energy consumption and carbon emissions test data show that the loam fields, the average power consumption cost of NT $ 21.2/ha; carbon dioxide emissions by an average of 26 kg/ha. This result shows that energy consumption in the consideration of the performance of carbon dioxide emissions, electric cultivators have lower costs. The test results are displayed in the field; the electric cultivator operator heart rate is lower than the gasoline engine cultivator and has significant difference statistically. Therefore, in the field of long-term operating conditions, the electric cultivator helps reduce physical exertion and operator fatigue.

IMMEDIATE EFFECT OF VARIOUS TYPES OF MUSIC ON VITAL SIGNS IN INFANTS

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Mandar Malawade ◽  
Namrata Patil
Keyword(s):  
Heart Rate ◽  
Stress Responses ◽  
Physiological Responses ◽  
Vital Signs ◽  
Behavioral Responses ◽  
Auditory Stimulation ◽  
Behavioral State ◽  
Energy Demands ◽  
Significant Difference ◽  
Different Types

Overview:  Infants experience stressors. Stress responses in infants include physiological responses (HR and oxygen saturation) and behavioral responses (behavioral state, motor activity, and signs of behavioral distress). Modulation of the stress response in infants may reduce energy demands and enhance recovery. The characteristics of auditory stimulation provided by music differ from those of other types of auditory stimulation. The infants respond differently to music than to other random noises. This study was carried out to examine the effects of different types of music on vital signs of infants. Methodology: Thirty infants were included in the study. They were divided into two groups. Low and High pitched music was used with for two individual groups. The immediate effect was assessed through pre and post recordings for Heart rate, Reapiratory rate and O2 saturation level. Results: There was statistically significant change in Heart Rate, Respiratory Rate and O2 saturation individually. While comparing post data, except Heart Rate there was no significant difference found with both types of music. Conclusion: Low pitched music has better immediate effect than high pitched music Key words: High pitched music, Low pitched music, Infants

The influence of osteopathic correction on the rate of various rhythms of the body

2019 ◽  
pp. 64-71 ◽  
Author(s):  
A. E. Chernikova ◽  
Yu. P. Potekhina
Keyword(s):  
Heart Rate ◽  
Respiratory Rate ◽  
Age Groups ◽  
Biomechanical Properties ◽  
Dispersion Analysis ◽  
The Body ◽  
Body Tissues ◽  
Age Related ◽  
Significant Difference ◽  
Before And After

Introduction. An osteopathic examination determines the rate, the amplitude and the strength of the main rhythms (cardiac, respiratory and cranial). However, there are relatively few studies in the available literature dedicated to the influence of osteopathic correction (OC) on the characteristics of these rhythms.Goal of research — to study the influence of OC on the rate characteristics of various rhythms of the human body.Materials and methods. 88 adult osteopathic patients aged from 18 to 81 years were examined, among them 30 men and 58 women. All patients received general osteopathic examination. The rate of the cranial rhythm (RCR), respiratory rate (RR) heart rate (HR), the mobility of the nervous processes (MNP) and the connective tissue mobility (CTM) were assessed before and after the OC session.Results. Since age varied greatly in the examined group, a correlation analysis of age-related changes of the assessed rhythms was carried out. Only the CTM correlated with age (r=–0,28; p<0,05) in a statistically significant way. The rank dispersion analysis of Kruskal–Wallis also showed statistically significant difference in this indicator in different age groups (p=0,043). With the increase of years, the CTM decreases gradually. After the OC, the CTM, increased in a statistically significant way (p<0,0001). The RCR varied from 5 to 12 cycles/min in the examined group, which corresponded to the norm. After the OC, the RCR has increased in a statistically significant way (p<0,0001), the MNP has also increased (p<0,0001). The initial heart rate in the subjects varied from 56 to 94 beats/min, and in 15 % it exceeded the norm. After the OC the heart rate corresponded to the norm in all patients. The heart rate and the respiratory rate significantly decreased after the OC (р<0,0001).Conclusion. The described biorhythm changes after the OC session may be indicative of the improvement of the nervous regulation, of the normalization of the autonomic balance, of the improvement of the biomechanical properties of body tissues and of the increase of their mobility. The assessed parameters can be measured quickly without any additional equipment and can be used in order to study the results of the OC.

scholarly journals Wearable Technologies in Field Hockey Competitions: A Scoping Review

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5242
Author(s):  
Jolene Ziyuan Lim ◽  
Alexiaa Sim ◽  
Pui Wah Kong
Keyword(s):  
Heart Rate ◽  
Inertial Sensors ◽  
Wearable Devices ◽  
Field Hockey ◽  
Heart Rate Monitors ◽  
Search Terms ◽  
Physiological Demands ◽  
And Performance ◽  
Future Work ◽  
Skin Temperatures

The aim of this review is to investigate the common wearable devices currently used in field hockey competitions, and to understand the hockey-specific parameters these devices measure. A systematic search was conducted by using three electronic databases and search terms that included field hockey, wearables, accelerometers, inertial sensors, global positioning system (GPS), heart rate monitors, load, performance analysis, player activity profiles, and competitions from the earliest record. The review included 39 studies that used wearable devices during competitions. GPS units were found to be the most common wearable in elite field hockey competitions, followed by heart rate monitors. Wearables in field hockey are mostly used to measure player activity profiles and physiological demands. Inconsistencies in sampling rates and performance bands make comparisons between studies challenging. Nonetheless, this review demonstrated that wearable devices are being used for various applications in field hockey. Researchers, engineers, coaches, and sport scientists can consider using GPS units of higher sampling rates, as well as including additional variables such as skin temperatures and injury associations, to provide a more thorough evaluation of players’ physical and physiological performances. Future work should include goalkeepers and non-elite players who are less studied in the current literature.

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