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Pediatric Exercise Science

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https://www.readbyqxmd.com/read/28388271/physical-activity-sedentary-behaviour-and-the-risk-of-overweight-and-obesity-in-school-aged-children
#1
Eimear Keane, Xia Li, Janas M Harrington, Anthony P Fitzgerald, Ivan J Perry, Patricia M Kearney
PURPOSE: Globally, public health policies are targeting modifiable lifestyle behaviours. We explore the independent association of moderate-to-vigorous physical activity (MVPA) and sedentary behaviour on the risk of childhood overweight/obesity. METHOD: A cross-sectional survey of children aged 8-11 years (N=826). Objective body mass index was used to classify children as normal weight or overweight/obese. Children wore wrist-worn Geneactiv accelerometers for 7-days and thresholds were applied to categorise MVPA and sedentary time...
April 7, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28338426/the-role-of-exercise-in-prevention-and-treatment-of-osteopenia-of-prematurity-an-update
#2
Alon Eliakim, Ita Litmanovitz, Dan Nemet
Premature infants have an increased risk of osteopenia due to limited bone mass accretion in utero and a greater need for bone nutrients. Until recently, most of efforts to prevent osteopenia of prematurity focused on nutritional changes. Recent studies indicate that passive range of motion exercise of the extremities may lead to beneficial effects on body weight, increased bone mineralization, increased bone formation markers and leptin levels, and attenuation of the natural post-natal decline in bone SOS...
March 24, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28338412/adolescent-changes-in-aerobic-fitness-are-related-to-changes-in-academic-achievement
#3
Lauren B Raine, John R Biggan, Carol L Baym, Brian J Saliba, Neal J Cohen, Charles H Hillman
There is a growing trend of decreasing physical fitness among adolescents, which may not only result in poorer physical health, but also poorer academic achievement. PURPOSE: The purpose of this study was to investigate the changes in aerobic fitness and academic achievement in reading and mathematics during middle school. METHOD: This study employed a prospective, longitudinal cross-sectional design. Fifty-two adolescents were followed from sixth grade through eighth grade...
March 24, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28253063/assessment-of-the-five-minute-oxygen-uptake-efficiency-slope-in-children-with-obesity
#4
Katrin A Dias, Concetta E Masterson, Matthew P Wallen, Arnt E Tjonna, Mansoureh S Hosseini, Peter Sw Davies, Peter A Cain, Gary M Leong, Ross Arena, Charlotte B Ingul, Jeff S Coombes
PURPOSE: Poor cardiorespiratory fitness is associated with increased all cause morbidity and mortality. In children with obesity, maximum oxygen uptake (V̇O2max) may not be achieved due to reduced motivation and peripheral fatigue. We aimed to identify a valid submaximal surrogate for V̇O2max in children with obesity. METHODS: Ninety-two children with obesity (7-16 years) completed a maximal exercise treadmill test and entered a three-month exercise and/or nutrition intervention after which the exercise test was repeated (n=63)...
March 2, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28165870/a-comparison-of-exercise-induced-muscle-damage-following-maximal-eccentric-contractions-in-men-and-boys
#5
Chariklia K Deli, Ioannis G Fatouros, Vassilis Paschalis, Kalliopi Georgakouli, Athanasios Zalavras, Alexandra Avloniti, Yiannis Koutedakis, Athanasios Z Jamurtas
PURPOSE: Research regarding exercise-induced muscle-damage mainly focuses on adults. The present study examined exercise-induced muscle-damage responses in adults compared to children. METHOD: Eleven healthy boys (10-12y) and 15 healthy men (18-45y) performed 5 sets of 15 maximal eccentric contractions of the knee extensors. Range of motion (ROM), delayed onset muscle soreness (DOMS) during squat and walking, and peak isometric, concentric and eccentric torque were assessed before, post-, 24, 48, 72, and 96h post-exercise...
February 6, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28165859/exercise-induced-hypoxemia-in-juvenile-thyroid-carcinoma-with-lung-metastases
#6
Florian J Segerer, Johannes Biko, Christoph Reiners, Clemens Wirth, Helge Hebestreit
PURPOSE: Exercise-induced arterial hypoxemia (EIAH) has been reported in patients with juvenile thyroid cancer treated with radioiodine for lung metastases. This retrospective study tested the hypothesis that EIAH is due to ventilation-perfusion-mismatch in this rare pulmonary condition. METHOD: 50 patients (age 13 -23 years) treated for juvenile thyroid carcinoma and lung metastasis with 131I and 24 controls with thyroid cancer but without lung metastases and prior 131I-treatment were assessed in a state of acute hypothyroidism by computed tomography of the lungs, pulmonary function testing, cardiopulmonary exercise test with measurements of gas exchange, oxygen saturation, alveolar-arterial difference in pO2 (p(A-a)O2) and pCO2 (p(ET-a)CO2)...
February 6, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28448242/the-tom-rowland-series-a-forum-exploring-new-challenges-facing-pediatric-exercise-science
#7
Bareket Falk
No abstract text is available yet for this article.
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28290759/cross-validation-of-two-accelerometers-for-assessment-of-physical-activity-and-sedentary-time-in-preschool-children
#8
Sofiya Alhassan, John R Sirard, Laura B F Kurdziel, Samantha Merrigan, Cory Greever, Rebecca M C Spencer
PURPOSE: The purpose of this study was to cross-validate previously developed Actiwatch (AW; Ekblom et al. 2012) and AcitGraph (AG; Sirard et al. 2005; AG-P, Pate et al. 2006) cut-point equations to categorize free-living physical activity (PA) of preschoolers using direct observation (DO) as the criterion measure. A secondary aim was to compare output from the AW and the AG from previously developed equations. METHODS: Participants' (n = 33; age = 4.4 ± 0.8 yrs; females, n=12) PA was directly observed for three 10-min periods during the preschool-day while wearing the AW (nondominant wrist) and AG (waist)...
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28121265/beta-alanine-supplementation-improves-throwing-velocities-in-repeated-sprint-ability-and-200-m-swimming-performance-in-young-water-polo-players
#9
Gabriel Machado Claus, Paulo Eduardo Redkva, Gabriel Mota Pinheiro Brisola, Elvis Sousa Malta, Rodrigo de Araujo Bonetti de Poli, Willian Eiji Miyagi, Alessandro Moura Zagatto
The purpose of this study was to investigate the effects of beta-alanine supplementation on specific tests for water polo. Fifteen young water polo players (16 ± 2 years) underwent a 200-m swimming performance, repeated-sprint ability test (RSA) with free throw (shooting), and 30-s maximal tethered eggbeater kicks. Participants were randomly allocated into two groups (placebo × beta-alanine) and supplemented with 6.4g∙day(-1)of beta-alanine or a placebo for six weeks. The mean and total RSA times, the magnitude based inference analysis showed a likely beneficial effect for beta-alanine supplementation (both)...
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28050932/physical-activity-levels-of-adolescents-with-type-1-diabetes-physical-activity-in-t1d
#10
Valderi Abreu de Lima, Luis Paulo Gomes Mascarenhas, Juliana Pereira Decimo, William Cordeiro de Souza, Anna Louise Stellfeld Monteiro, Ian Lahart, Suzana Nesi França, Neiva Leite
The aim of this study was to evaluate the level of physical activity and cardiorespiratory fitness in teenagers with type 1 diabetes mellitus (T1D) in comparison with healthy scholar participants. Total of 154 teenagers (T1D = 45 and CON = 109). Height, weight, cardiorespiratory fitness (VO2max), and the level of physical activity by the Bouchard's Physical Activity Record were measured, and glycated hemoglobin (HbA1c) in T1D. The VO2max was lower in the T1D (38.38 ± 7.54) in comparison with the CON (42.44 ± 4...
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28050926/normative-values-for-cardiorespiratory-fitness-testing-among-us-children-aged-6-11-years
#11
Jaime J Gahche, Brian K Kit, Janet E Fulton, Dianna D Carroll, Thomas Rowland
BACKGROUND: Nationally representative normative values for cardiorespiratory fitness (CRF) have not been described for US children since the mid 1980s. OBJECTIVE: To provide sex- and age-specific normative values for CRF of US children aged 6-11 years. METHODS: Data from 624 children aged 6-11 years who participated in the CRF testing as part of the 2012 National Health and Nutrition Examination Survey National Youth Fitness Survey, a cross-sectional survey, were analyzed...
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28050914/physiological-perceptual-and-performance-responses-associated-with-self-selected-versus-standardized-recovery-periods-during-a-repeated-sprint-protocol-in-elite-youth-football-players-a-preliminary-study
#12
Neil Gibson, Callum Brownstein, Derek Ball, Craig Twist
PURPOSE: To examine the physiological and perceptual responses of youth footballers to a repeated sprint protocol employing standardized and self-selected recovery. METHODS: Eleven male participants (13.7 ± 1.1 years) performed a repeated sprint assessment comprising 10 × 30 m efforts. Employing a randomized cross-over design, repeated sprints were performed using 30 s and self-selected recovery periods. Heart rate was monitored continuously with ratings of perceived exertion (RPE) and lower body muscle power measured 2 min after the final sprint...
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27834619/maturation-related-effect-of-low-dose-plyometric-training-on-performance-in-youth-hockey-players
#13
Jason Moran, Gavin R H Sandercock, Rodrigo Ramírez-Campillo, Oliver Todd, Jay Collison, Dave A Parry
PURPOSE: The purpose of this intervention study was to investigate if a low-dose of plyometric training (PT) could improve sprint and jump performance in groups of different maturity status. METHOD: Male youth field hockey players were divided into Pre-PHV (from -1 to -1.9 from PHV; Experimental: n = 9; Control = 12) and Mid-PHV (0 to +0.9 from PHV; Experimental: n = 8; Control = 9) groups. Participants in the experimental groups completed 60 foot contacts, twice-weekly for 6 weeks...
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27834608/factors-associated-with-moderate-to-vigorous-physical-activity-in-adolescents-born-preterm
#14
Ketsia Proulx, Annette Majnemer, Noémi Dahan-Oliel, Barbara Mazer, Line Nadeau, Kathleen Vanier, Désirée B Maltais
PURPOSE: Little is known about the physical activity of adolescents born prematurely. This study aimed to: 1) describe relationships between moderate to vigorous physical activity (MVPA) in adolescents born prematurely and various factors and, 2) compare their MVPA level to guidelines. METHOD: A secondary analysis was performed using data from 64 adolescents (16.1 ± 2.5 years old, born £29 weeks gestation; 57.8% girls). Time spent in MVPA was based on accelerometry data...
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27834578/serum-adiponectin-levels-and-cardiorespiratory-fitness-in-nonoverweight-and-overweight-portuguese-adolescents-the-labmed-physical-activity-study
#15
César Agostinis-Sobrinho, Carla Moreira, Sandra Abreu, Luís Lopes, José Oliveira-Santos, Jostein Steene-Johannessen, Jorge Mota, Rute Santos
PURPOSE: This study examined the independent associations between cardiorespiratory fitness and circulating adiponectin concentration in adolescents, controlling for several potential covariates. METHODS: This is a cross-sectional study in Portuguese adolescents. A sample of 529 (267 girls) aged 12-18 years were included and categorized as overweight and nonoverweight. Cardiorespiratory fitness was assessed by 20 meters shuttle run test. We measured serum adiponectin, high-sensitivity C-reactive protein, fasting glucose, insulin and HDL-cholesterol...
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27768554/the-influence-of-familiarization-on-physical-fitness-test-results-in-primary-school-aged-children
#16
Ivan Vrbik, Goran Sporiš, Lovro Štefan, Dejan Madić, Nebojša Trajković, Irena Valantine, Zoran Milanović
PURPOSE: The number of familiarization sessions in fitness assessments seems to be critical and inconsistent. Therefore, the primary aim of this research was to determine the number of familiarization attempts that stabilize the results in particular physical fitness tests. The secondary aim was to establish the test reliability through familiarization sessions. METHODS: Thirty-nine primary school children participated in this research (age: 10.8 years, body mass: 40...
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27768546/exercise-training-improved-body-composition-cardiovascular-function-and-physical-fitness-of-5-year-old-children-with-obesity-or-normal-body-mass
#17
Sijie Tan, Cheng Chen, Mingyang Sui, Lunan Xue, Jianxiong Wang
OBJECTIVES: To explore the effects of exercise training on body composition, cardiovascular function, and physical fitness in 5-year-old obese and lean children. METHODS: 42 obese and 62 lean children were randomly allocated into exercise and control groups separately. Body composition, cardiovascular function, and physical fitness were measured at baseline and the end of the intervention. The exercise groups participated in 10 weeks of supervised moderate intensity exercise training (at 50% of heart rate reserve), 50 training sessions in total...
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27705535/validity-of-skinfold-equations-against-dual-energy-x-ray-absorptiometry-in-predicting-body-composition-in-adolescent-pentathletes
#18
Sidnei Jorge Fonseca-Junior, Aldair J Oliveira, Luiz Lannes Loureiro, Anna Paola Trindade Pierucci
PURPOSE: Body composition of adolescent athletes is often evaluated scientifically and in sports by using reference equations developed from nonathlete adolescent populations. The aim of this study was to analyze the validity of predictive equations based on skinfold measurements, as compared with dual-energy X-ray absorptiometry (DXA), to estimate body fat in adolescent modern pentathlon athletes. METHODS: 51 athletes, 27 male (mean age = 15.1 years; standard deviation, SD = 1...
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27705534/can-motor-proficiency-in-preschool-age-affect-physical-activity-in-adolescence
#19
Fotini Venetsanou, Antonis Kambas
BACKGROUND: This study investigated if motor proficiency (MP) in preschool age associate with physical activity (PA) in adolescence. METHODS: In 2004, the Bruininks-Oseretsky Test of Motor Proficiency-Short Form (BOTMP-SF) (7) was administered to 413 children, aged 4-6 years, who were classified to MP groups according to their BOTMP-SF total score (TS). In 2014, the PA of 106 former participants (47 boys, 59 girls) was measured with Omron pedometers. MP [three (high; above average; average)] × gender (two) ANOVA and Bonferroni tests were computed on average of steps/week...
May 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27618345/reliability-of-heart-rate-variability-in-children-influence-of-sex-and-body-position-during-data-collection
#20
Carla Cristiane Silva, Maurizio Bertollo, Felipe Fossati Reichert, Daniel Alexandre Boullosa, Fábio Yuzo Nakamura
PURPOSE: To examine which body position and indices present better reliability of heart rate variability (HRV) measures in children and to compare the HRV analyzed in different body positions between sexes. METHOD: Twenty eutrophic prepubertal children of each sex participated in the study. The RR intervals were recorded using a portable heart rate monitor twice a day for 7 min in the supine, sitting, and standing positions. The reproducibility was analyzed using the intraclass correlation coefficient (ICC; two way mixed) and within-subject coefficient of variation (CV)...
May 2017: Pediatric Exercise Science
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