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Pediatric Exercise Science

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https://www.readbyqxmd.com/read/30004296/onset-of-accelerated-muscle-deoxygenation-during-the-20-m-shuttle-run-test-in-boys
#1
Daisuke Kume, Akira Iguchi, Hiroshi Endoh
PURPOSE: This study aimed to compare the relative exercise intensity at which the onset of accelerated muscle deoxygenation occurs during the 20-m shuttle run test (20mSRT) between boys and men and to examine whether the timing of the onset of acceleration appearance is related to 20mSRT performance in boys. METHODS: Twenty-four boys performed the 20mSRT, during which concentration changes in oxygenated and deoxygenated hemoglobin and myoglobin (ΔOxy-Hb and ΔDeoxy-Hb, respectively) in the m...
July 13, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29804497/agreement-between-dual-energy-x-ray-absorptiometry-and-quantitative-ultrasound-to-evaluate-bone-health-in-adolescents-the-pro-bone-study
#2
Ana Torres-Costoso, Dimitris Vlachopoulos, Esther Ubago-Guisado, Asunción Ferri-Morales, Iván Cavero-Redondo, Vicente Martínez-Vizcaino, Luis Gracia-Marco
PURPOSE: The present study aims to investigate the association between dual-energy X-ray absorptiometry (DXA) and quantitative ultrasound (QUS) parameters and the intermethods agreement in active males. METHODS: In this cross-sectional study, bone health (by DXA and calcaneal QUS), physical activity (by accelerometers), and anthropometrics measurements were assessed in 117 active adolescents (12-14 y old). Bivariate correlation coefficients were calculated to assess the relationships between DXA standard regions of interest and QUS parameters...
May 26, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29683771/wnt-signaling-related-osteokines-at-rest-and-following-plyometric-exercise-in-prepubertal-and-early-pubertal-boys-and-girls
#3
Panagiota Klentrou, Kirina Angrish, Nafisa Awadia, Nigel Kurgan, Rozalia Kouvelioti, Bareket Falk
PURPOSE: This study examined osteokines related to Wnt signaling at rest and in response to plyometric exercise in 12 boys [10.2 (0.4) y] and 12 girls [10.5 (0.4) y]. METHODS: One resting (preexercise) and 3 postexercise (5 min, 1 h, and 24 h) blood samples were analyzed for sclerostin, dickkopf-related protein 1 (DKK-1), osteoprotegerin (OPG), and receptor activator of nuclear factor kappa-β ligand (RANKL). RESULTS: Girls had higher resting sclerostin than boys [187...
April 23, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29485938/erratum-lakes-et-al-2017
#4
(no author information available yet)
In the article by Lakes KD, Abdullah MM, Youssef J, et al. Assessing parent perceptions of physical activity in families of toddlers with neurodevelopmental disorders: The Parent Perceptions of Physical Activity Scale (PPPAS), Pediatr Exerc Sci. 2017; 29: 396-407, https://doi.org/10.1123/pes.2016-0213 , an author's name was incorrectly listed. Shlomit Aizik should have been listed as Shlomit Radom-Aizik. The online version of this article has been corrected. We apologize for this error.
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29485935/the-use-of-a-wheelchair-propulsion-field-test-to-determine-peak-heart-rate-in-children-and-adolescents-with-myelomeningocele
#5
Marisa Maia Leonardi-Figueiredo, Mariana Angélica de Souza, Elisangela Aparecida da Silva Lizzi, Luciano Fonseca Lemos de Oliveira, Julio Cesar Crescencio, Pedro Vellosa Schwartzmann, Lourenço Gallo, Ana Claudia Mattiello-Sverzut
PURPOSE: We analyzed the evolution and pattern of heart rate (HR) during the 12-minute wheelchair propulsion field test (WPFT) and compared the peak HR (HRpeak ) from the WPFT to the HRpeak obtained in the progressive cardiopulmonary exercise test on arm cranking ergometer (ACT). We aimed to determine if the field test detects the HRpeak consistently and could be used in clinical practice. METHODS: Eleven wheelchair-using children and adolescents with myelomeningocele (aged 8-15 y) performed a maximal ACT and a 12-minute WPFT...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29417877/children-s-compliance-with-wrist-worn-accelerometry-within-a-cluster-randomized-controlled-trial-findings-from-the-healthy-lifestyles-programme
#6
Lisa Price, Katrina Wyatt, Jenny Lloyd, Charles Abraham, Siobhan Creanor, Sarah Dean, Melvyn Hillsdon
PURPOSE: The purpose of this study was to assess children's compliance with wrist-worn accelerometry during a randomized controlled trial and to examine whether compliance differed by allocated condition or gender. METHODS: A total of 886 children within the Healthy Lifestyles Programme trial were randomly allocated to wear a GENEActiv accelerometer at baseline and 18-month follow-up. Compliance with minimum wear-time criteria (≥10 h for 3 weekdays and 1 weekend day) was obtained for both time points...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29276859/defining-accelerometer-nonwear-time-to-maximize-detection-of-sedentary-time-in-youth
#7
Kelli L Cain, Edith Bonilla, Terry L Conway, Jasper Schipperijn, Carrie M Geremia, Alexandra Mignano, Jacqueline Kerr, James F Sallis
PURPOSE: The present study examined various accelerometer nonwear definitions and their impact on detection of sedentary time using different ActiGraph models, filters, and axes. METHODS: In total, 61 youth (34 children and 27 adolescents; aged 5-17 y) wore a 7164 and GT3X+ ActiGraph on a hip-worn belt during a 90-minute structured sedentary activity. Data from GT3X+ were downloaded using the Normal filter (N) and low-frequency extension (LFE), and vertical axis (V) and vector magnitude (VM) counts were examined...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29276857/mental-fatigue-impairs-physical-performance-in-young-swimmers
#8
Eduardo Macedo Penna, Edson Filho, Samuel Penna Wanner, Bruno Teobaldo Campos, Gabriel Resende Quinan, Thiago Teixeira Mendes, Mitchell Robert Smith, Luciano Sales Prado
PURPOSE: This study aimed to investigate the impact of mental fatigue on heart rate variability, subjective measures of fatigue, and swimming performance in young athletes. METHODS: Sixteen swimmers [15.45 (0.51) y old, 7.35 (2.20) y of swimming experience] performed a 1500-m time trial on 2 occasions separated by an interval of at least 72 hours. The 1500-m swimming was preceded by a 30-minute treatment that consisted of performing the Stroop Color and Word test to induce mental fatigue (experimental trial) or watching an emotionally neutral video (control trial)...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29276855/assessing-differences-in-cardiorespiratory-fitness-with-respect-to-maturity-status-in-highly-trained-youth-soccer-players
#9
Greg Doncaster, John Iga, Viswanath Unnithan
PURPOSE: The purpose of the study was to examine differences in measures of cardiorespiratory fitness and determinants of running economy with respect to maturity status in a group of highly trained youth soccer players. METHODS: A total of 21 highly trained youth soccer players participated in this study. On separate visits, players' peak oxygen uptake (VO2peak ), running economy at 3 different speeds [8 km·h-1 , 80% gaseous exchange threshold (GET), and 95% GET], and pulmonary oxygen uptake (VO2 ) kinetics were determined...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29276854/the-impact-of-physical-activity-on-serum-inflammatory-markers-in-overweight-pubertal-boys-24-month-follow-up-study
#10
Liina Remmel, Vallo Tillmann, Eva Mengel, Pille Kool, Priit Purge, Evelin Lätt, Jaak Jürimäe
PURPOSE: To investigate the differences in the pattern of changes in serum inflammatory cytokines measured annually over a 24-month period, between less active and more active overweight boys. PARTICIPANTS/METHODS: In total, 25 pubertal overweight boys were divided by their moderate to vigorous physical activity (MVPA) levels into 2 groups: less active group (LAG; n = 10; MVPA < 60 min/d) and more active group (MAG; n = 15; MVPA > 60 min/d)...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29275750/responding-to-the-commentary-on-the-article-improving-the-prediction-of-maturity-from-anthropometric-variables-using-a-maturity-ratio
#11
Job Fransen, Adam Baxter-Jones, Stephen Woodcock
No abstract text is available yet for this article.
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29168422/evaluation-of-youth-enjoyment-toward-physical-activity-and-sedentary-behavior
#12
Yang Bai, Kelly Allums-Featherston, Pedro F Saint-Maurice, Gregory J Welk, Norma Candelaria
PURPOSE: The consensus is that physical activity (PA) and sedentary behavior (SB) are independent behaviors, but past findings suggest that they may be influenced by common underlying factors. To clarify this issue, we examined associations between enjoyment of PA and participation in both PA and SB in a large sample of 4th- to 12th-grade US youth. METHODS: A total of 18,930 students from 187 schools completed the youth activity profile, a self-report 15-item survey that assesses time spent in PA and SB in school and home settings...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29160762/commentary-on-the-article-improving-the-prediction-of-maturity-from-anthropometric-variables-using-a-maturity-ratio
#13
Alan Nevill, Richard F Burton
No abstract text is available yet for this article.
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29039246/regular-practice-of-competitive-sports-does-not-impair-sleep-in-adolescents-dados-study
#14
María Reyes Beltran-Valls, Enrique García Artero, Ana Capdevila-Seder, Alejandro Legaz-Arrese, Mireia Adelantado-Renau, Diego Moliner-Urdiales
PURPOSE: To analyze differences in sleep quality and duration by athletic status and sex, and to examine the association between physical activity (PA) recommendation and sleep in adolescents. METHODS: A total of 267 adolescents [13.9 (0.3) y] from Deporte, ADOlescencia y Salud (DADOS) study (129 girls) were included in this cross-sectional analysis. Athletes competed regularly in organized sport events and trained ≥3 days per week, but nonathletes did not compete...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28872443/pacer-performance-of-children-aged-11-14-with-attention-deficit-hyperactive-disorder
#15
Timothy Martinson, Stephen A Butterfield, Craig A Mason, Shihfen Tu, Robert A Lehnhard, Christopher J Nightingale
PURPOSE: The purposes of this study were to examine the performance on the progressive aerobic cardiovascular endurance run (PACER) test in children with and without attention-deficit hyperactive disorder (ADHD) over the course of a school year, and also to investigate the possible influence of age, sex, school sport participation, and body mass index on results. METHODS: Utilizing a repeated measures design, 892 middle school children aged 11-14 years (mean = 12...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28872424/intensified-training-period-increases-salivary-iga-responses-but-does-not-affect-the-severity-of-upper-respiratory-tract-infection-symptoms-in-prepuberal-rhythmic-gymnasts
#16
Kizzy Antualpa, Marcelo Saldanha Aoki, Alexandre Moreira
This study examined the effect of a 4-week intensified training (IT) period, followed by a 2-week tapering period (TP), on salivary immunoglobulin A (SIgA), salivary cortisol, and the severity of upper respiratory tract infection symptoms in 23 rhythmic gymnasts [12.1 (2.6) y; 143.9 (13.7) cm; 37.2 (9.4) kg]. Saliva sampling was conducted at pre- and post-IT, and post-TP (analyzed using enzyme-linked immunosorbent assay). The Wisconsin Upper Respiratory Symptom Survey (WURSS-21) questionnaire was completed daily to analyze the severity of upper respiratory tract infection symptoms...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28872419/impact-of-scoliosis-severity-on-functional-capacity-in-patients-with-adolescent-idiopathic-scoliosis
#17
Bruna M A Saraiva, Geferson S Araujo, Evandro F Sperandio, Alberto O Gotfryd, Victor Z Dourado, Milena C Vidotto
PURPOSE: The aim of this study is to evaluate the walked distance and physiological responses during incremental shuttle walk test in patients with different degrees of adolescent idiopathic scoliosis (AIS). METHODS: We evaluated 20 healthy teenagers and 46 patients with AIS; they were divided into 2 groups: AIS > 45° and AIS < 45°. The volunteers performed an incremental shuttle walk test, and the following physiological responses were quantified: oxygen consumption, tidal volume, ventilation, and the incremental shuttle walked distance...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28872417/how-does-the-relationship-between-motor-skill-performance-and-body-mass-index-impact-physical-activity-in-preschool-children
#18
Haixia Guo, Michaela A Schenkelberg, Jennifer R O'Neill, Marsha Dowda, Russell R Pate
PURPOSE: To determine if weight status modifies the relationship between motor skill (MS) performance and physical activity (PA) in preschoolers. METHODS: Preschoolers (N = 227, age 3-5 y) were recruited from 22 preschools. Preschoolers' MS (locomotor, object control, and total MS) were assessed with the Children's Activity and Movement in Preschool Study MS protocol. PA was measured by accelerometry. Mixed linear models were used to examine the relationship of MS performance and body mass index (BMI) z score to PA...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28605273/improving-the-prediction-of-maturity-from-anthropometric-variables-using-a-maturity-ratio
#19
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 nonlinear 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, utilizing 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...
May 1, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28605263/acute-compensatory-responses-to-interrupting-prolonged-sitting-with-intermittent-activity-in-preadolescent-children
#20
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 intensities and of prolonged sitting on physical activity compensation. METHODS: A total of 33 children (14 boys and 19 girls; age 7-11 y; 24% overweight/obese; 61% nonwhite) completed 4 experimental conditions in random order: 8 hours of sitting interrupted with 20 two-minute low-, moderate-, or high-intensity activity breaks or 20 two-minute sedentary computer game breaks...
May 1, 2018: Pediatric Exercise Science
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