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Pediatric Exercise Science

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https://www.readbyqxmd.com/read/28338426/the-role-of-exercise-in-prevention-and-treatment-of-osteopenia-of-prematurity-an-update
#1
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
#2
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/28290759/cross-validation-of-two-accelerometers-for-assessment-of-physical-activity-and-sedentary-time-in-preschool-children
#3
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-minute periods during the preschool-day while wearing the AW (non-dominant wrist) and AG (waist)...
March 14, 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/28121265/%C3%AE-alanine-supplementation-improves-throwing-velocities-in-repeated-sprint-ability-and-200-m-swimming-performance-in-young-water-polo-players
#7
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 β-alanine supplementation on specific tests for water polo. Fifteen young water polo players (16±2years) underwent a 200-m swimming performance, repeated-sprint ability test (RSA) with free throw (shooting), and 30-s maximal teth-ered eggbeater kicks. Participants were randomly allocated into two groups (placebo x β-alanine) and supplemented with 6.4g∙day(-1) of β-alanine or a placebo for six weeks. The mean and total RSA times, the magnitude based inference analysis showed a likely beneficial effect for β-alanine sup-plementation (both 79...
January 25, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28121246/associations-of-objectively-measured-physical-activity-and-sedentary-time-with-arterial-stiffness-in-pre-pubertal-children
#8
Eero A Haapala, Juuso Väistö, Aapo Veijalainen, Niina Lintu, Petri Wiklund, Kate Westgate, Ulf Ekelund, Virpi Lindi, Soren Brage, Timo A Lakka
PURPOSE: To investigate the relationships of objectively measured physical activity (PA) and sedentary time (ST) to arterial stiffness in pre-pubertal children. METHOD: Altogether 136 children (57 boys, 79 girls) aged 6-8-years participated in the study. Stiffness index (SI) was assessed by pulse contour analysis based on photoplethysmography. ST, light PA, moderate PA, and vigorous PA were assessed using combined acceleration and heart rate monitoring. We investigated the associations of ST (<1...
January 25, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28121233/heart-rate-response-and-variability-following-maximal-exercise-in-overweight-children
#9
Justin P Guilkey, Brandon Dykstra, Jennifer Erichsen, Anthony D Mahon
PURPOSE: This study examined heart rate recovery (HRR) and heart rate variability (HRV) following maximal exercise in lean (<85th percentile age- and sex-BMI percentile; n=11 (♂=5; ♀=6); 10.1±0.7 years) and overweight (≥85th age- and sex-BMI percentile; n=11 (♂=5; ♀=6); 10.5±1.2 years) children. METHODS: Participants completed a 10-minute rest, followed by a graded exercise test to maximal effort. HRV, in the time and frequency domains, was assessed during rest and recovery...
January 25, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28121232/minimum-wear-duration-for-the-activpal%C3%A2-professional-activity-monitor-in-adolescent-females
#10
Kieran P Dowd, Helen Purtill, Deirdre M Harrington, Jane F Hislop, John J Reilly, Alan E Donnelly
OBJECTIVES: This study aims to determine the minimum number of days of monitoring required to reliably predict sitting/lying time, standing time, light intensity physical activity (LIPA), moderate-to-vigorous intensity physical activity (MVPA) and steps in adolescent females. METHODS: 195 adolescent females (mean age=15.7 years; SD=0.9) participated in the study. Participants wore the activPAL activity monitor for a seven day protocol. The amount of time spent sitting/lying, standing, in LIPA and in MVPA and the number of steps per day were quantified...
January 25, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28050932/physical-activity-levels-of-adolescents-with-type-1-diabetes
#11
Valderi Abreu de Lima, Luis Paulo Gomes Mascarenhas, Juliana Pereira Decimo, William Cordeiro de Souza, Anna Louise Stellfeld Monteiro, Ian Lahard, 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 VO2 max was lower in the T1D (38.38 ± 7.54) in comparison with the CON (42.44 ± 4...
January 4, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28050926/normative-values-for-cardiorespiratory-fitness-testing-among-us-children-aged-6-11-years
#12
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 1980's. 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...
January 4, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28050919/resistance-training-effects-on-metabolic-function-among-youth-a-systematic-review
#13
Jennifer W Bea, Robert M Blew, Carol Howe, Megan Hetherington-Rauth, Scott B Going
PURPOSE: This systematic review evaluates the relationship between resistance training and metabolic function in youth. METHODS: PubMed, Embase, Cochrane Library, Web of Science, CINAHL, and ClinicalTrials.gov were searched for articles that: (1) studied children; (2) included resistance training; (3) were randomized interventions; and (4) reported markers of metabolic function. The selected studies were analyzed using the Cochrane Risk-of-Bias Tool. RESULTS: Thirteen articles met inclusion criteria...
January 4, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28050917/acute-caffeine-ingestion-on-performance-in-young-judo-athletes
#14
Camilla Astley, Diego Souza, Marcos Polito
PURPOSE: To compare the acute effect of caffeine ingestion on performance in young judo athletes. METHODS: In a randomized double-blind design, eighteen judo athletes (16.1 ± 1.4 yrs.) were evaluated on three nonconsecutive days. On the first day, the special judo fitness test (SJFT) was used as a control session. On the second day, the sample was randomly divided into two equal groups. One group received 4 mg.kg(-1) of caffeine (capsule) and the other group received a placebo...
January 4, 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
#15
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 x 30 m efforts. Employing a randomized crossover 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...
January 4, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28271813/immune-response-to-exercise-during-growth
#16
Shlomit Radom-Aizik
Two papers were selected for this commentary. The first paper (Citation 1) suggests that a 10-week, moderate-intensity exercise program performed early after allogeneic hematopoietic stem cell transplantation is feasible in this fragile population, and might improve cell cytotoxicity by redistributing subpopulations of NK cells. This study adds to the growing evidence that enhancing immune cell surveillance (e.g., NK cells) in response to exercise could benefit cancer patients. The second paper (Citation 2) studied neutrophil-related mediators of oxidative stress and inflammatory cytokines in response to exercise in children compared with adults...
February 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28271812/elite-youth-sports-from-best-pediatric-science-practice-to-sports-practice-2016
#17
Craig A Williams
In my 2015 editorial, I selected two research publications with a focus on an applied sports sciences perspective. This year I have chosen to focus on two publications from a methodological viewpoint, highlighting the importance of laboratory procedures and extraction of data through a systematic review respectively. The first publication by Leites and colleagues (J Appl Physiol) addresses questions in relation to thermoregulation and carbohydrate metabolism in young people. This topic is difficult to conduct due to additional ethical and safety concerns due to exercising in the heat...
February 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28271811/psychosocial-aspects-of-youth-physical-activity
#18
Lindsay E Kipp
Two articles that contribute to the literature on psychosocial predictors of youths' physical activity motivation and behavior were chosen for commentary. The first article by Fenner and colleagues showed that a family-based intervention was effective at increasing overweight adolescents' self-determined motivation for physical activity and healthy eating and their quality of life. Significant study contributions include a multidisciplinary team of researchers, multiple pre and post intervention assessments, and a longitudinal test of mechanisms of change...
February 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28271810/childhood-obesity-physical-activity-and-exercise
#19
Dan Nemet
As the incidence of childhood obesity increases, there is a need to promote leisure time physical activity. Traditional approaches to promote the population physical activity levels have shown at best moderate improvements. High percentage of children today carry a cell phone, thus the use of this portable device seems promising for enhancing physical activity. Pokémon Go, is a smartphone game that uses augmented reality, where players are incentivized to get out and walk significant distances to catch the Pokémon...
February 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28271809/an-active-child-is-a-healthy-child
#20
Bareket Falk
No abstract text is available yet for this article.
February 2017: Pediatric Exercise Science
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