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Modeling the dose-response rate/associations between VO2max and self-reported Physical Activity Questionnaire in children and adolescents

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Journal of Sport and Health Science 2020年第1期9卷 90-95页

作者： Alan M.Nevill Michael J.Duncan Gavin Sandercock Faculty of Education Health and WellbeingUniversity of WolverhamptonWalsall CampusWalsallWS13BDUK Faculty of Health and Life Sciences Coventry UniversityCoventryCV15FBUK School of Biological Sciences University of EssexColchesterCO43SQUK

Background'. This study sought to explore the dose—response rate/association between aerobic fitness (VC)2max) and self-reported physical activity(PA) and to assess whether this association varies by sex, age, and weight ***. VO2max was assessed using the 20・m shuttle・run test. PA was assessed using the Physical Activity Questionnaire (PAQ) for Adolescents(aged > 11 years, PAQ-A) or for Children (aged <11 years, PAQ-C). The associations between V02raax and PAQ were analyzed using analysisof covariance (ANCOVA), adopting PAQ and PAQ2 as covariates but allowing the intercepts and slope parameters of PAQ and PAQ2 tovary with the categorical variables sex, age group, and weight ***: ANCOVA identified a curvilinear association between VO2max and PAQ, with positive linear PAQ terms that varied for both sex andweight status but with a negative PAQ2 term of —0.39 (95% confidence interval (CI): —0.57 to —0.21) that was common for all groups in regardto age, sex, and weight status. These curvilinear (inverted U) associations suggest that the benefits of increasing PA (same dose) on VO2max isgreater when children report lower levels of PA compared to children who report higher levels of PA. These dose-response rates were alsosteeper for boys and were steeper for lean children compared to overweight/obese ***'. Health practitioners should be aware that encouraging greater PA (same dose) in inactive and underweight children will result ingreater gains in V02max (response) compared with their active and overweight/obese counterparts.

关键词： aerobic fitness Curvilinear association Sex Slope parameters Weight status

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Effects of a long-term physical exercise program with and without diet on obese boys after six-month detraining

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World Journal of Pediatrics 2014年第1期10卷 38-45页

作者： Antonio García-Hermoso Jose M Saavcdra Yolanda Escalante Ana M Domíngue Faculty of Sport Sciences AFIDES Research GroupUniversity of ExtremaduraSpain

Background:Most studies on physical fitness and detraining have been conducted on normal-weight *** results indicate that any gains regress to the untrained control values during the detraining ***,therefore,seems necessary to determine how detraining affects the different fitness parameters in obese *** aim of the present study was to evaluate the effects of detraining(6 months)on kinanthropometry and the components of physical fitness after an intervention(31 months)consisting of a program of exercise and/or diet for obese ***:The participants were 18 boys,aged between 8 and 11 years,divided into E and E+D groups according to the program they *** E group followed a physical exercise program(three 90-minute sessions/week),and the E+D group the same physical exercise program plus a low calorie *** fitness was assessed by the European physical fitness test battery including flamingo balance,plate tapping,sit-andreach,standing broad jump,hand-grip strength,sit-ups,bent-arm hang,10×5-metre shuttle run,and 20-metre endurance shuttle *** Kruskal-Wallis test was applied to reveal overall intergroup differences(E and E+D groups),and measurements showing significant differences were further analysed for differences between individual groups by the Mann-Whitney U ***:In both groups,changes were observed in various physical fitness parameters,especially limb speed(E group,P=0.001;E+D group,P=0.002),agility(E group,Paerobic fitness(E group,P=0.009;E+D group,P=0.002).Conclusion:Detraining after a long-term intervention based on the combination of exercise program and exercise program plus diet in obese boys does not affect the changes attained during the intervention.

关键词： aerobic fitness agility balance body mass index strength

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Investigating the Modulatory Role of Chronological and Biological Age on Performance Predictors in Youth Swimmers

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Journal of Science in Sport and Exercise 2020年第4期2卷 349-358页

作者： M.A.McNarry L.Lester J.Brown K.A.Mackintosh School of Sport and Exercise Sciences Swansea UniversityBay CampusSwansea SA18ENUK School of Human Science University of Western AustraliaPerth 6009Australia

Purpose The aim of this study was to determine the modulatory roles of biological maturity and age on the predictors of performance in youth swimmers and their stability over a six-month training *** In total,28 swimmers(10 pre-pubertal[6 boys],11.1±1.8 years;18 pubertal[8 boys],15.2±2.0 years old)and 26 untrained controls(15 pre-pubertal[10 boys],9.7±1.5 years;11 pubertal[6 boys],14.4±0.5 years old)were *** baseline,3-and 6-months,participants completed an incremental ramp cycle test,isometric handgrip strength test and countermovement jumps,with speed assessed as a measure of performance in *** component analysis(PCA)identified factors that described youth swimmers’physical profile,with linear mixed models subsequently used to determine their interaction with age and maturity on *** aerobic fitness and upper body strength were significantly higher in the trained participants,irrespective of maturity status or *** key factors were identified through PCA(anthropometrics;strength;aerobic capacity;aerobic rate),accounting for 90%of the between parameter *** exerted a widespread influence on swimming performance predic-tors,influencing all four factors,whilst maturity only influenced the aerobic *** key age of divergence was 13 *** Overall,the present study found no evidence of a maturational threshold in the aerobic or strength-related response to training in *** influence of age on performance predictors suggests that utilising a single or select group of parameters to inform selection and/or talent identification throughout the dynamic processes of growth and maturation should be avoided.

关键词： aerobic fitness Strength Maturity Pre-pubertal Pubertal Power

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Young people are fit and active——Fact or fiction?

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Journal of Sport and Health Science 2012年第3期1卷 131-140,194页

作者： Neil Armstrong Children’s Health and Exercise Research Centre University of Exeter

This paper analyses young people's habitual physical activity(HPA) and aerobic fitness(AF) in relation to health and well-being,with reference to previous *** consistently show that more boys than girls experience health-related physical activity(PA) and that both genders experience a decline in HPA during *** majority of young people(～60%-75%) do not meet the requirements of current health-related PA guidelines but youth HPA appears to have stabilised over the last two *** it does not describe all aspects of AF, peak oxygen uptake(peak VO_2) is recognised as the best single measure of *** VO_2 is enhanced with age,growth and maturation with increases of～150%and～80%in boys and girls respectively from 8 to 16 ***' values are higher than those of girls throughout childhood and adolescence with the gender difference reaching～35% by age 16 *** is no compelling evidence to suggest that young people have low levels of peak VO_2 or that they are less aerobically fit than children of previous *** the relative stability of peak VO_2 there has been a decline of～13%over the last 35 years in young people's ability to perform maximal aerobic exercise which involves the transport of body *** their daily lives young people very rarely experience PA of the intensity and duration to enhance AF and peak VO_2 is, at best,only weakly related to current levels of HPA during *** levels of HPA and a marked secular decline in maximal aerobic performance remain major issues in the promotion of youth health and well-being.

关键词： Adolescents aerobic fitness Children Health and well-being Physical activity

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An Efficient and Enjoyable Way for Physical fitness Development among Women at Midlife

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Health 2020年第8期12卷 943-953页

作者： Omri Ezra Sharon Tsuk Alon Eliakim Yoav Meckel The Academic College at Wingate Wingate Institute Netanya Israel Child Health and Sport Center Pediatric Department Meir Medical Center Sackler School of Medicine Tel Aviv University Tel Aviv Israel

The aim of the study was to examine the effect of Newcomb ball (also known by the name of catchball) training on the physical fitness of women at midlife. One hundred and eighteen women, aged 29 - 45 yrs, were assigned to an experimental group (EG) or a control group (CG), and completed two similar sets of tests before and after seven months of training. The EG performed two Newcomb ball training sessions per week that included technical and tactical drills with and without the ball, small sided games and full games at different variations. The CG remained non-active throughout the seven months. Leg power, arm power, agility, speed, and aerobic scores were significantly higher for the EG compared to the CG at baseline (p aerobic fitness (563 ± 328 vs 680 ± 378 m) (ES = 0.45 – 0.61, p p fitness variables. The findings indicate that amateur Newcomb ball training can be used as an efficient and enjoyable tool for fitness development among midlife women.

关键词： Team Sport Training Strength aerobic fitness

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Performance Training with or without Ball： A Comparison between Helgerud Method in Female Soccer

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Journal of Sports Science 2018年第2期6卷 103-107页

作者： Riccardo Izzo Giancarlo Carnevali Ciro Hosseini Varde'i Department of Biomolecular Sciences School of Sport Science Exercise and Health University of Urbino Carlo Bo Urbino Pesaroe Urbino 61029 Italy

关键词： aerobic fitness women soccer VO2max heart rate Helgerud ball.

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