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Pediatric Exercise Science

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https://www.readbyqxmd.com/read/28605306/behaviour-tracking-and-three-year-longitudinal-associations-between-physical-activity-screen-time-and-fitness-among-young-children
#1
Morgan Potter, John C Spence, Normand Boulé, Jodie A Stearns, Valerie Carson
PURPOSE: Understanding the correlates of children's fitness as they develop is needed. The objectives of this study were to: (1) examine the longitudinal associations between physical activity (PA), screen time (ST), and fitness, (2) determine if sex moderates associations, and (3) track PA and ST over three years. METHODS: Findings are based on 649 children (baseline: 4.5±0.5 years; follow-up: 7.8±0.6 years) from Edmonton, Canada. Parental-reported hour/week of PA and ST were measured at baseline and three years later...
June 12, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28605273/improving-the-prediction-of-maturity-from-anthropometric-variables-using-a-maturity-ratio
#2
Job Fransen, Stephen Bush, Stephen Woodcock, Andrew Novak, Dieter Deprez, Adam D G Baxter-Jones, Roel Vaeyens, Matthieu Lenoir
PURPOSE: This study aimed to improve the prediction accuracy of Age at Peak Height Velocity (APHV) from anthropometric assessment using non-linear models and a maturity ratio rather than a maturity offset. METHODS: The dataset used to develop the original prediction equations was used to test a new prediction model, utilising the maturity ratio and a polynomial prediction equation. This model was then applied to a sample of male youth academy soccer players (n = 1330) to validate the new model in youth athletes...
June 12, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28605263/acute-compensatory-responses-to-interrupting-prolonged-sitting-with-intermittent-activity-in-preadolescent-children
#3
Molly P O'Sullivan, Matthew R Nagy, Shannon S Block, Trevor R Tooley, Leah E Robinson, Natalie Colabianchi, Rebecca E Hasson
PURPOSE: The purpose of this study was to compare the effects of intermittent activity performed at varying intesnities and prolonged sitting on physical activity compensation. METHODS: Thirty-three children (14 boys, 19 girls; ages 7-11 years; 24% overweight/obese; 61% non-white) completed four experimental conditions in random order: 8 hours of sitting interrupted with 20, 2-minute low-, moderate-, or high-intensity activity breaks or 20, 2-minute sedentary computer-game breaks...
June 12, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28605259/is-young-age-a-limiting-factor-when-training-balance-effects-of-child-oriented-balance-training-in-children-and-adolescents
#4
Michael Wälchli, Jan Ruffieux, Audrey Mouthon, Martin Keller, Wolfgang Taube
PURPOSE: Balance training studies in children reported conflicting results without evidence for improvements in children under the age of eight. The aim of this study therefore was to compare balance training adaptations in children of different age groups to clarify whether young age prevents positive training outcomes. METHOD: The effects of five weeks of child-oriented balance training were tested in 77 (38 girls; 39 boys) participants of different age groups (6-7, 11-12, and 14-15 years) and compared to age-matched controls...
June 12, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28605250/exercise-for-bone-in-childhood-hitting-the-sweet-spot
#5
Belinda R Beck
PURPOSE: The goal of the current work is to challenge the enduring notion that pre-puberty is the optimum timing for maximum bone response to exercise in childhood, and to present the evidence that early puberty is a more a potently receptive period. METHOD: The relevant literature is reviewed and the causes of the misconception addressed in detail. RESULTS: Contrary to prevailing opinion, ample evidence exists to suggest the peri-pubertal years represent the developmental period during which bone is likely to respond most robustly to exercise intervention...
June 12, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28605234/the-impact-of-training-load-on-bone-mineral-density-of-adolescent-swimmers-a-structural-equation-modeling-approach
#6
Ricardo Ribeiro Agostinete, Santiago Maillane-Vanegas, Kyle R Lynch, Bruna Turi-Lynch, Manuel João Coelho-E-Silva, Eduardo Zapaterra Campos, Suziane Ungari Cayres, Romulo Araújo Fernandes
PURPOSE: To investigate the mediating effect of muscle mass on the relationship between training load and bone density in adolescent swimmers. METHODS: A cross-sectional study involving 87 control and 22 swimmers aged 10-19 years (overall sample, n= 109). Swimmers had a minimum of one year of competition in regional and national championships, and control adolescents reported one year without any organized sport. Bone density was the main outcome (dual energy X-ray absorptiometry), which was measured in upper-limbs, lower-limbs, spine, and whole-body...
June 12, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28556755/effects-of-exercise-training-alone-on-depot-specific-body-fat-stores-in-youth-review-of-recent-literature
#7
YoonMyung Kim
The prevalence of childhood obesity has increased at an alarming rate. The increased obesity rate in pediatrics parallels the increased risks for developing metabolic abnormalities such as insulin resistance, type 2 diabetes (T2DM), and non-alcoholic fatty liver disease (NAFLD). In particular, the strong relationship between obesity and such health consequences are well explained by the excessive accumulation of depot-specific body adiposity such as visceral adipose tissue (VAT), intrahepatic lipid content, intermuscular AT (IMAT), and/or intramyocellular lipid (IMCL) content...
May 30, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28556682/bouts-of-vigorous-physical-activity-and-bone-strength-accrual-during-adolescence
#8
Leigh Gabel, Heather M Macdonald, Lindsay Nettlefold, Heather A McKay
PURPOSE: To examine the influence of vigorous physical activity (VPA) bout frequency on bone strength accrual across adolescence, independent of total volume of VPA. METHOD: We measured VPA (6 METs; total volume and bout frequency < 5 min in duration) annually using waist-worn accelerometers (ActiGraph GT1M) in 309 adolescents (9-20 years at baseline: 99, <13 years; 126, 13-18 years; 84, >18 years) over a maximum of 4 years. We applied finite element analysis to high-resolution peripheral quantitative computed tomography scans of the distal tibia (8% site) to estimate bone strength (failure load; F...
May 30, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28530511/wnt-signaling-related-osteokines-and-transforming-growth-factors-before-and-after-a-single-bout-of-plyometric-exercise-in-child-and-adolescent-females
#9
Jennifer Dekker, Katlynne Nelson, Nigel Kurgan, Bareket Falk, Andrea Josse, Panagiota Klentrou
This study examined resting levels of catabolic and anabolic osteokines related to Wnt signaling and their responses to a single bout of plyometric exercise in child and adolescent females. Fourteen pre-menarcheal girls (10.5 ± 1.8 years old) and 12 post-menarcheal adolescent girls (15.0 ± 1.0 years old) performed a plyometric exercise trial. One resting and three post-exercise blood samples (5 min, 1h, 24h post-exercise) were analysed for sclerostin (SOST), dickkopf-1 (DKK-1), osteoprotegerin (OPG), receptor activator of nuclear factor kappa-β ligand (RANKL) and transforming growth factors (TGF-β1, TGF-β2 and TGF-β3)...
May 22, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28530510/self-reported-physical-activity-and-exercise-patterns-in-children-with-sickle-cell-disease
#10
Osarhiemen A Omwanghe, Devin S Muntz, Soyang Kwon, Simone Montgomery, Opeyemi Kemiki, Lewis L Hsu, Alexis A Thompson, Robert I Liem
PURPOSE: Sickle cell disease (SCD) significantly affects physical functioning. We examined physical activity (PA) patterns in children with SCD versus a national sample and factors associated with PA and participation in physical education and organized sports. METHOD: One hundred children with SCD completed a 58-item survey with questions from the 2009-2010 National Health and Nutrition Examination Survey (NHANES) Physical Activity Questionnaire and others on physical education and sports, disease impact, and physical functioning...
May 22, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28486060/aerobic-fitness-and-moderate-to-vigorous-physical-activity-in-children-and-adolescents-living-with-hiv
#11
Luiz Rodrigo Augustemak de Lima, Diego Augusto Santos Silva, Kelly Samara da Silva, Andreia Pelegrini, Isabela de Carlos Back, Edio Luiz Petroski
AIMS: To examine aerobic fitness, total moderate to vigorous physical activity (MVPA) and also patterns in terms of MVPA between children and adolescents with human immunodeficiency virus (HIV) and controls, and to determine whether differences, if any, are associated with HIV, sex and highly active antiretroviral therapy (HAART). METHODS: A cross-sectional analysis was carried out with 130 children and adolescents, aged between 8 and 15 years, divided into two groups (HIV group= 65 patients, control group= 65 healthy participants)...
May 9, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28486024/longitudinal-associations-between-sedentary-behavior-of-adolescent-girls-their-mothers-and-best-friends
#12
Lennart Raudsepp, Eva-Maria Riso
PURPOSE: The objective of this study was to examine the prospective relationship and changes in sedentary behavior between adolescent girls, their mothers and best friends over time Methods: The results are based on 122 girls aged 11-12 years at baseline measurement, their mothers and best friends who completed ecological momentary assessment diary for the assessment of sedentary behavior. All measurements were taken at three time points separated by one year. We used structural equation modeling to examine associations among sedentary behavior of adolescent girls, their mothers and best friends...
May 9, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28486020/assessing-parent-perceptions-of-physical-activity-in-families-of-toddlers-with-neurodevelopmental-disorders-the-parent-perceptions-of-physical-activity-scale-pppas
#13
Kimberley Lakes, Maryam M Abdullah, Julie Youssef, Joseph Donnelly, Candice Taylor-Lucas, Wendy A Goldberg, Dan Cooper, Shlomit Aizik
PURPOSE: The purpose of this study was to examine a new tool (PPPAS: Parent Perceptions of Physical Activity Scale-Preschool) developed to study parental perceptions of physical activity (PA) among parents of toddler and preschool age children. METHOD: 143 children (mean age 31.65 months; 75% male) and their parents were recruited from a neurodevelopmental clinic. Parents completed questionnaires, and both a psychologist and a physician evaluated the children. 83% of the children received a diagnosis of Autism Spectrum Disorder; 20% of the children had a BMI > 85(th) percentile...
May 9, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28486015/muscular-and-cardiorespiratory-fitness-in-homeschool-versus-public-school-children
#14
Laura S Kabiri, Katy Mitchell, Wayne Brewer, Alexis Ortiz
PURPOSE: The growth and unregulated structure of homeschooling creates an unknown population in regard to muscular and cardiorespiratory fitness. The purpose of this research was to compare muscular and cardiorespiratory fitness between elementary school aged homeschool and public school children. METHOD: Homeschool children ages 8-11 years old (n=75) completed the curl-up, 90° push-up, and Progressive Aerobic Capacity Endurance Run (PACER) portions of the FitnessGram® to assess abdominal and upper body strength and endurance as well as cardiorespiratory fitness...
May 9, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28388271/physical-activity-sedentary-behaviour-and-the-risk-of-overweight-and-obesity-in-school-aged-children
#15
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/28448242/the-tom-rowland-series-a-forum-exploring-new-challenges-facing-pediatric-exercise-science
#16
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
#17
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
#18
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
#19
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
#20
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
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