scholarly journals The Influence of Sport Practices on Body Composition, Maturation and Maximum Oxygen uptake in children and youth (La influencia de las prácticas deportivas en la composición corporal, la maduración y la absorción máxima de oxígeno en niños y jóvenes)

Retos ◽  
2021 ◽  
Vol 44 ◽  
pp. 649-658
Author(s):  
Cristiana Mercê ◽  
Marco Branco ◽  
Mário Rodrigues-Ferreira ◽  
António VencesBrito ◽  
David Catela ◽  
...  
Keyword(s):  
Body Composition ◽  
Oxygen Uptake ◽  
Negative Influence ◽  
Positive Influence ◽  
Maximum Oxygen Uptake ◽  
Children And Youth ◽  
Sport Practice ◽  
Grasa Corporal ◽  
Negative Effect ◽  
Karate Athletes

Systematic sport practice at younger ages positively influences body composition and maximum oxygen uptake (VO2max). On the other hand, its influence on maturation is still not consensual, and some studies claim a negative effect. Few studies have approached the differences in this influence according to different sport practices. The present study aims to analyse and compare the influence of karate and swimming practices, and the non-practice of sports, on body composition, VO2max and maturation in children and youth. Data were collected in 126 youth, 54 karate athletes, 36 swimming athletes and 36 participants with no sport practice (M=11.56±2.06 years). The type of sport practice had a different influence on body composition and VO2max, no negative influence was verified on maturation. In general, the sport practices revealed a positive influence in children and youth’s body composition. The karate practice provided significant lower body fat mass and higher lean mass in males. Swimming athletes revealed a significant higher VO2max compared to all other groups, while karate didn´t differed from no-practice group. The different influence of sport practices verified highlighted the importance of a multilateral development of children and youth by practising several sports.  Resumen: La práctica deportiva sistemática a edades más tempranas influye positivamente en la composición corporal y la absorción máxima de oxígeno (VO2max). Por otro lado, su influencia en la maduración aún no es consensuada, y algunos estudios afirman un efecto negativo. Pocos estudios se han acercado a las diferencias en esta influencia según las distintas prácticas deportivas. El presente estudio tiene como objetivo analizar y comparar la influencia de las prácticas de kárate y natación, y la no práctica de deportes, sobre la composición corporal, el VO2máx y la maduración en niños y jóvenes. Los datos fueron recolectados en 126 jóvenes, 54 atletas de kárate, 36 atletas de natación y 36 participantes sin práctica deportiva (M = 11.56 ± 2.06 años). El tipo de práctica deportiva influyó de manera diferente en la composición corporal y el VO2max, no se verificó influencia negativa en la maduración. En general, las prácticas deportivas revelaron una influencia positiva en la composición corporal de niños y jóvenes. La práctica del karate proporcionó una masa grasa corporal significativamente más baja y una masa magra más alta en los hombres. Los atletas de natación revelaron un VO2max significativamente más alto en comparación con todos los demás grupos, mientras que el karate no difirió del grupo sin práctica. La diferente influencia de las prácticas deportivas verificada resaltó la importancia de un desarrollo multilateral de la niñez y la juventud a través de la práctica de varios deportes.

scholarly journals ГИС-ПОДХОД ДЛЯ ОЦЕНКИ ВЛИЯНИЯ ОБЫЧНЫХ И СДВОЕННЫХ КОЛЕС НА ТВЕРДОСТЬ ПОЧВЫ

2015 ◽  
Vol 5 (03) ◽  
pp. 73-100
Author(s):  
A. V. Zhukov
Keyword(s):  
Penetration Resistance ◽  
Negative Influence ◽  
Positive Influence ◽  
Cultivated Plants ◽  
Gis Technology ◽  
Negative Effects ◽  
Soil Penetration Resistance ◽  
Surface Character ◽  
Top Soil ◽  
Negative Effect

<p>GIS-APPROACH application has allowed establishing that usual wheels of machine-tractor units carry out considerable influence on soil which exceeds visible borders of a track of wheels on the dimensions. This influence shows in augmentation of soil penetration resistance at 100-155 % in comparison with the control on depth of 0-10 cm and on 20-30 % on depth of 45-50 %. It is impossible to exclude that influence of wheels proceeds more deeply, than tests have been conducted. Critical for cultivated plants value of soil penetration resistance in 3 MPa under the influence of usual wheels of agricultural machinery comes nearer practically to a surface. Character of profile changes of hardness in various regions influences of wheels allows assuming the long season of a relaxation of soil for achievement of background values of soil penetration resistance. The further researches are necessary for an establishment of concrete indicators of dynamics. Negative influence of an overstocking does not confine only deterioration of conditions of growth of assemblages of rootlets of plants. Infringement of processes of moving of moisture in the soil, the accelerated evaporation and the slowed down processes of a filtration and an infiltration, destruction of modular frame, activization of erosive processes is possible. The understanding of these processes will give the chance volume understanding of real influence of running systems of machine-tractor devices on bedrock. Region intensive influence of dual wheels is circumscribed by the top soil layers (0-15 cm). The major feature of influence of dual wheels is absence of an overstocking above critical levels. It is impossible to exclude possible positive influence of moderate inspissations of soil under the influence of dual wheels for growth of agricultural crops and moisture conservation in soil. The cumulative negative effect on soil crossed vehicles traces is probable. The long season of a relaxation of soil after anthropogenic transformation can create a network of traces of vehicles in the field. In region crossings of traces negative effects considerably increase.</p> <p><em>Keywords: hardness of bedrock, GIS-TECHNOLOGY, technique influence</em></p>

scholarly journals The Influence of Enterprise Risk Management, Leverage, Firm Size and Profitability on Firm Value in Property and Real Estate Companies Listed on the Indonesian Stock Exchange in 2016-2018

2021 ◽  
Author(s):  
Dihin Septyanto ◽  
Ikhwan Maulid Nugraha
Keyword(s):  
Risk Management ◽  
Firm Size ◽  
Firm Value ◽  
Stock Exchange ◽  
Descriptive Analysis ◽  
Negative Influence ◽  
Positive Influence ◽  
Enterprise Risk Management ◽  
Enterprise Risk ◽  
Negative Effect

The objective of this study was to analyze the effects of enterprise risk management (ERM) disclosure, leverage, firm size and profitability on firm value, which is proxied by Tobin’s Q. High corporate value can reflect the shareholders’ wealth. This study used the Indonesian Capital Market Directory (ICMD). The sample included 32 companies, chosen with nonprobability purposive sampling. This study used a quantitative approach with descriptive analysis methods and panel data regression to test hypotheses using the Eviews 10 application. ERM disclosure, leverage and profitability had a positive and significant influence on firm value, while firm size had a negative influence on firm value. The implication of this research is that where ERM has a positive influence on firm value, it is good for companies to increase ERM disclosure, because the company will be considered to have managed its risks well. Debt policy variables that are proxied by the Debt to Equity Ratio (DER) and profitability proxied by ROA had a positive effect on firm value. That is, a higher value of DER was followed by an increase in the percentage of Return On Assets (ROA), which increased the firm’s value. However, the company’s size variable which was proxied by Ln Total Assets had a negative effect on the value of the company, which indicated that investors dislike company assets that are too high and that are not offset by high profits. Keywords: enterprise risk management, leverage, firm size, profitability, firm value

scholarly journals BODY COMPOSITION, MAXIMUM OXYGEN UPTAKE, AND MAXIMUM OXYGEN DEBT IN ELITE SENIOR HIGH SCHOOL (KUNIMI) SOCCER PLAYERS

1990 ◽  
Vol 39 (3) ◽  
pp. 198-206
Author(s):  
YASUAKI TAHARA ◽  
NORIAKI TSUNAWAKE ◽  
SHO NISHIZAWA ◽  
KOICHI YUKAWA ◽  
SHUNSUKE MORI ◽  
...  
Keyword(s):  
High School ◽  
Body Composition ◽  
Oxygen Uptake ◽  
Senior High School ◽  
Maximum Oxygen Uptake ◽  
Oxygen Debt ◽  
Soccer Players

scholarly journals Longitudinal changes in body composition associated with healthy ageing: men, aged 20–96 years

2011 ◽  
Vol 107 (7) ◽  
pp. 1085-1091 ◽  
Author(s):  
Andrew S. Jackson ◽  
Ian Janssen ◽  
Xuemei Sui ◽  
Timothy S. Church ◽  
Steven N. Blair
Keyword(s):  
Body Composition ◽  
Body Fat ◽  
Fat Mass ◽  
Positive Influence ◽  
Healthy Ageing ◽  
Fat Free Mass ◽  
Longitudinal Changes ◽  
Percentage Of Body Fat ◽  
Age Related ◽  
Negative Effect

Obesity and sarcopenia are health problems associated with ageing. The present study modelled the longitudinal changes in body composition of healthy men, aged from 20 to 96 years, and evaluated the fidelity of BMI to identify age-dependent changes in fat mass and fat-free mass. The data from 7265 men with multiple body composition determinations (total observations 38 328) were used to model the age-related changes in body mass, fat mass, fat-free mass, BMI and percentage of body fat. Changes in fat mass and fat-free mass were used to evaluate the fidelity of BMI and to detect body composition changes with ageing. Linear mixed regression models showed that all trajectories of body composition with healthy ageing were quadratic. Fat mass, BMI and percentage of body fat increased from age 20 years and levelled off at approximately 80 years. Fat-free mass increased slightly from age 20 to 47 years and then declined at a non-linear rate with ageing. Levels of aerobic exercise had a positive influence on fat mass and a slight negative effect on fat-free mass. BMI and percentage of body fat were sensitive in detecting the increase in fat mass that occurred with healthy ageing, but failed to identify the loss of fat-free mass that started at age 47 years.

Maximum oxygen uptake and body composition of healthy Hong Kong Chinese adult men and women aged 20 – 64 years

2008 ◽  
Vol 26 (3) ◽  
pp. 295-302 ◽  
Author(s):  
Samuel Yeung Shan Wong ◽  
Frank Wan Kin Chan ◽  
Chi Kei Lee ◽  
Martin Li ◽  
Fai Yeung ◽  
...  
Keyword(s):  
Body Composition ◽  
Hong Kong ◽  
Oxygen Uptake ◽  
Maximum Oxygen Uptake ◽  
Hong Kong Chinese ◽  
Men And Women ◽  
Adult Men ◽  
Chinese Adult

scholarly journals Effects of Facial Skin Smoothness and Blemishes on Trait Impressions

Perception ◽  
2018 ◽  
Vol 47 (6) ◽  
pp. 608-625 ◽  
Author(s):  
Bastian Jaeger ◽  
Fieke M. A. Wagemans ◽  
Anthony M. Evans ◽  
Ilja van Beest
Keyword(s):  
Negative Influence ◽  
Positive Influence ◽  
Facial Skin ◽  
Social Approach ◽  
Approach And Avoidance ◽  
Negative Effect ◽  
Smooth Skin ◽  
Trait Inferences ◽  
Trait Impressions ◽  
Positive Effect

People make trait inferences based on facial appearance, and these inferences guide social approach and avoidance. Here, we investigate the effects of textural features on trait impressions from faces. In contrast to previous work, which exclusively manipulated skin smoothness, we manipulated smoothness and the presence of skin blemishes independently (Study 1) and orthogonally (Study 2). We hypothesized that people are particularly sensitive to skin blemishes because blemishes potentially indicate poor health and the presence of an infectious disease. We therefore predicted that the negative effect of blemished skin is stronger than the positive effect of smoothed skin. The results of both studies are in line with this reasoning. Across ratings of trustworthiness, competence, maturity, attractiveness, and health, the negative influence of skin blemishes was stronger and more consistent than the positive influence of skin smoothness (Study 1). Moreover, the presence of skin blemishes diminished the positive effect of skin smoothness on attractiveness ratings (Study 2). In sum, both facial skin blemishes and facial skin smoothness influence trait impression, but the negative effect of blemished skin is larger and more salient than the positive effect of smooth skin.

scholarly journals Similar rates of fat oxidation during graded submaximal exercise in women of different body composition

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0242551
Author(s):  
Hugo A. Kerhervé ◽  
Leonie M. Harvey ◽  
Alexander N. Eagles ◽  
Chris McLellan ◽  
Dale Lovell
Keyword(s):  
Body Composition ◽  
Oxygen Uptake ◽  
Blood Lactate ◽  
Exercise Intensity ◽  
Perceived Exertion ◽  
Exercise Prescription ◽  
Fat Oxidation ◽  
Substrate Oxidation ◽  
Maximum Oxygen Uptake ◽  
Moderate Intensity

Background Moderate intensity exercise ranging 40–60% of maximum oxygen uptake is advised to promote energy expenditure and fat oxidation in overweight and obese people. Although fat oxidation has been shown to be highly variable among individual, there is still a relative uncertainty regarding exercise prescription for women specifically. This article aimed to determine whether indicators of body composition can be used to narrow the exercise intensity range for exercise prescription in women. Methods A total of 35 healthy women (age 30.8±9.5 yr) classified according to their BMI in normal weight (NOR; ≤24.9 kg·m2), overweight (OVW; 25–29.9 kg·m2) and obese groups (OBE; ≥30 kg·m2) completed a submaximal graded test (intensities eliciting ~30%, 40%, 50% and 60% of maximum oxygen uptake). Blood lactate, perceived exertion and absolute and relative substrate oxidation for fat (OXFAT) and carbohydrates (OXCHO) were measured at each stage. Results Perceived exertion and blood lactate increased as a function of exercise but did not differ across groups. There were no significant changes in absolute and relative OXFAT across groups, or as a function of exercise intensity. Peak OXFAT occurred at the 40%, 50% and 40% stages for NOR, OVW and OBE groups, respectively, with no significant differences across groups. Conclusion We measured no differences, but considerable inter-individual variation, in fat oxidation in women of different body composition. This result is in agreement with previous research based on exercise performed at constant rate and in independent participant groups. Our findings do not support the fat oxidation hypothesis, and further emphasise the perspective that exercise prescription should be individualised and likely be based on considerations other than substrate oxidation.

scholarly journals How does Social Media Affect the Psychological Well-Being of High School Students Attending Jose Marti MAST 6-12 Academy?

2021 ◽  
Vol 10 (4) ◽  
Author(s):  
Mizael Prieto ◽  
Marika De Los Reyes
Keyword(s):  
Social Media ◽  
High School Students ◽  
Public Perception ◽  
Well Being ◽  
Negative Influence ◽  
Positive Influence ◽  
Jose Marti ◽  
School Students ◽  
Psychological Well Being ◽  
Negative Effect

Social media is arguably the most influential force the 21st century has to offer more than the economy, politics, or anything in between; social media has greatly influenced everyone more than once. With a network of interconnected people so large over multiple platforms the force social media exerts over people has never been greater than now; social media has become the place where people share their opinions with the world for others to read, see, and hear. One example of its influence is the public perception on Covid-19, it increased the general fear of it and also decreased mental health among several users of social media; panic mostly spread among younger users, who expressed their concerns over social media (Ahmad & Murad, 2020). While social media applications have a positive influence, they also have a negative influence on their users, especially teenagers. A study conducted by Dr. Ghulam Shabir, Chairman of the Department of Media Studies at The Islamia University of Bahawalpur, found that out of 279 participants, 139 agreed and 85 strongly agreed that social media has a bad influence on the participants; however, they also found that 110 of the agreed and 63 strongly agreed that social media positively influenced them (2014). With many children trying to find who they are, this study stands to find whether social media has a positive or negative effect over the psychological well-being of students in Jose Marti Mast 6-12 Academy.

Seasonal Changes in Fitness Parameters in a World Champion Rowing Crew

2012 ◽  
Vol 7 (2) ◽  
pp. 189-192 ◽  
Author(s):  
Pavle Mikulic
Keyword(s):  
Body Composition ◽  
Oxygen Uptake ◽  
Body Mass ◽  
Power Output ◽  
Maximum Oxygen Uptake ◽  
Training Cycle ◽  
World Class ◽  
And Performance ◽  
World Champion ◽  
Gas Exchange Threshold

Purpose:To examine variations in physical, physiological, and performance parameters over an annual training cycle in a world champion rowing crew.Methods:Four world-class rowers, all of them members of the men’s heavyweight quadruple sculls squad who are current world rowing champions, were assessed 3 times at regular 4-mo intervals during the 2011 season (November 2010, March 2011, and July 2011). Physical assessments included stature, body mass, body composition, whereas physiological and performance assessments obtained during an incremental rowing ergometer test to exhaustion included maximum oxygen uptake and anaerobic gas-exchange threshold with corresponding power output values.Results:Body mass (∼95 kg) and body composition (∼12% body fat) remained stable over the annual training cycle. Power output at anaerobic gas-exchange threshold increased +16% from November to July, whereas the corresponding oxygen uptake, expressed as a percentage of maximum oxygen uptake, increased from 83% to 90%. Maximum oxygen uptake decreased from 6.68 L/min in November to 6.10 L/min in March before rising to 6.51 L/min in July. The corresponding power output increased steadily from 450 W to 481 W.Conclusion:Seasonal variation in body mass and body composition of 4 examined world-class rowers was minimal. Oxygen uptake and power output corresponding to anaerobic threshold continuously increased from off-season to peak competition season. Seasonal variation in maximum oxygen uptake reached ∼10%; however, it remained above 6 L/min, that is, the value consistently observed in top caliber heavyweight rowers regardless of the time of the assessment.

scholarly journals PENGARUH PENGALAMAN AUDITOR DAN TIME BUDGET PRESSURE TERHADAP KUALITAS AUDIT DENGAN ETIKA AUDITOR SEBAGAI VARIABEL MODERASI

2020 ◽  
Vol 7 (1) ◽  
pp. 85
Author(s):  
Dessi Antika Putri
Keyword(s):  
Audit Quality ◽  
Time Budget ◽  
Negative Influence ◽  
Positive Influence ◽  
Primary Data ◽  
Accounting Firms ◽  
Negative Effect ◽  
Questionnaire Method ◽  
Time Budget Pressure ◽  
Positive Effect

<p><em>This study aims to obtain empirical evidence of the influence of Audit Experience and Time budget pressure on Audit Quality with Auditor Ethics as Moderation Variables. The population in this study are auditors who work at public accounting firms in DKI Jakarta. Sampling use convenience sampling totaling 125 respondents. The primary data collection method used was a questionnaire method. Data were analyzed using multiple regression with moderation. The results showed that the Auditor's Experience had a positive effect on Audit Quality, while Time budget pressure had a negative effect on Audit Quality. This study also shows that the Auditor Ethics as a moderating strengthens the positive influence between the Auditor's Experience on Audit Quality, while the Auditor Ethics as a moderating weakens the negative influence of Time budget pressure on Audit Quality.</em></p>

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