A Comparison of Exercise-Induced Muscle Damage Following Maximal Eccentric Contractions in Men and Boys.

abstract：:This study compared salivary and serum concentrations of testosterone and cortisol at rest and in response to intense multitask exercise in boys and men. Early morning saliva and venous blood samples were obtained before and 15 minutes after exercise from 30 competitive swimmers (15 boys, age 14.3 [1.9] y; 15 men, age...

journal_title：Pediatric exercise science

authors： Adebero T,McKinlay BJ,Theocharidis A,Root Z,Josse AR,Klentrou P,Falk B

更新日期：2020-05-01 00:00:00

abstract：PURPOSE:Fatigue negatively alters dynamic knee control, and the functional hamstring/quadriceps ratio (H/QFUNC) plays an important role in stabilizing the joint. The aim of this study was to investigate the influence of soccer-specific exercise on H/QFUNC in under (U) 13-, U15-, and U17-year-old female soccer players. ...

journal_title：Pediatric exercise science

authors： De Ste Croix M,Priestley A,Lloyd R,Oliver J

更新日期：2018-08-01 00:00:00

abstract：PURPOSE:There has long been a debate regarding the importance of talent versus training in athletic performance. In this study we sought to quantify their relative contributions to the race performance of high-school sprinters. METHODS:Using race results from the athletic.net website, we identified high-school athlete...

journal_title：Pediatric exercise science

authors： Lynch KE,Thomas A,Gibson B

更新日期：2016-11-01 00:00:00

abstract：:In his seminal paper, Rowland clearly outlined the rationale, evidence, and implications for the biological control of physical activity. Ten years later, there has been some progress in this area related to childhood physical activity with perhaps the greatest progress being made in the areas of genetics and the neur...

journal_title：Pediatric exercise science

authors： Eisenmann JC,Wickel EE

更新日期：2009-08-01 00:00:00

abstract：:This study was designed to test the reproducibility of muscle oxygenation by NIRS in children during exercise. Twelve healthy non-obese and non-trained children performed one maximal graded test, and four 6-min constant load cycle exercises. Deoxy-hemoglobin (Hb/Mb- H+) data were averaged every 1, 5, 10, 20 and 30s. H...

journal_title：Pediatric exercise science

authors： Leclair E,Borel B,Baquet G,Berthoin S,Mucci P,Thevenet D,Reguem SC

更新日期：2010-05-01 00:00:00

abstract：:The strength of time-dependent correlations known as stride interval (SI) dynamics has been proposed as an indicator of neurologically healthy gait. Most recently, it has been hypothesized that these dynamics may be necessary for gait efficiency although the supporting evidence to date is scant. The current study exam...

journal_title：Pediatric exercise science

authors： Ellis D,Sejdic E,Zabjek K,Chau T

更新日期：2014-08-01 00:00:00

abstract：PURPOSE:To understand the extent different types of acute exercise influence cerebral blood flow during and following exercise in children. METHODS:Eight children (7-11 y; 4 girls) completed 2 conditions: high-intensity interval exercise (HIIE; 6 × 1-min sprints at 90% watt maximum) and moderate-intensity steady-state...

journal_title：Pediatric exercise science

authors： Tallon CM,Simair RG,Koziol AV,Ainslie PN,McManus AM

更新日期：2019-08-01 00:00:00

abstract：:2016 has been an exciting year for research in physical activity, inactivity and health. Recognition of the importance of all physical behaviors (physical activity, sedentary time and sleep) across the 24-hr day continues to grow. Notable advances have included: applications of recent methodological innovations that a...

journal_title：Pediatric exercise science

authors： Rowlands AV

更新日期：2017-02-01 00:00:00

abstract：PURPOSE:The comparison of habitual physical activity and sedentary time in teenagers and young adults with cerebral palsy (CP) with typically developed (TD) peers can serve to quantify activity shortcomings. METHODS:Patterns of sedentary, upright, standing, and walking components of habitual physical activity were com...

journal_title：Pediatric exercise science

authors： Aviram R,Harries N,Shkedy Rabani A,Amro A,Nammourah I,Al-Jarrah M,Raanan Y,Hutzler Y,Bar-Haim S

更新日期：2019-02-01 00:00:00

abstract：PURPOSE:To quantify the differences in daily physical activity (PA) patterns, intensity-specific volumes, and PA bouts in youth with and without heart disease (HD). METHODS:Seven-day PA was measured on children/adolescents with HD (n = 34; median age 12.4 y; 61.8% male; 70.6% single ventricle, 17.7% heart failure, and...

journal_title：Pediatric exercise science

authors： White DA,Willis EA,Panchangam C,Teson KM,Watson JS,Birnbaum BF,Shirali G,Parthiban A

更新日期：2020-09-22 00:00:00

abstract：:Most pedometers record cumulative steps, limiting ability to assess level of physical activity or nonwear periods. The SportBrain iStep X1 has potential to overcome this limitation by recording and storing step count data in 60-s epochs. We evaluated accuracy of this instrument in children and the duration of consecut...

journal_title：Pediatric exercise science

authors： Dueker D,Gauderman WJ,McConnell R

更新日期：2012-11-01 00:00:00

abstract：:This study first aimed to compare critical power (CP) and anaerobic work capacity (AWC), to laboratory standard evaluation methods such as maximal oxygen uptake (VO(2)max) and maximal accumulated oxygen deficit (MAOD). Secondly, this study compared child and adult CP and AWC values. Subjects performed a maximal graded...

journal_title：Pediatric exercise science

authors： Leclair E,Borel B,Thevenet D,Baquet G,Mucci P,Berthoin S

更新日期：2010-08-01 00:00:00

abstract：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 s...

journal_title：Pediatric exercise science

authors： Omwanghe OA,Muntz DS,Kwon S,Montgomery S,Kemiki O,Hsu LL,Thompson AA,Liem RI

更新日期：2017-08-01 00:00:00

abstract：PURPOSE:The use of self-efficacy to predict physical activity has a long history. However, this relationship is complex, as self-efficacy is thought to influence and be influenced by physical activity. The directionality of the self-regulatory efficacy (SRE) and physical activity relationship was examined using a cross...

journal_title：Pediatric exercise science

authors： Wilson KS,Spink KS

更新日期：2020-07-29 00:00:00

abstract：PURPOSE:Sedentary behavior (SB) has been shown to be associated with unhealthy outcomes in children, and it is not clear whether children living with human immunodeficiency virus (HIV) engage in different patterns of SB compared with healthy children. This cross-sectional study aimed to compare patterns of SB between c...

journal_title：Pediatric exercise science

authors： da Costa BGG,da Silva KS,da Costa RM,Petroski EL,Back IC,Guerra PHA,de Lima LRA

更新日期：2020-02-01 00:00:00

abstract：:The assessment of maximal aerobic power ( V ...

journal_title：Pediatric exercise science

authors： Falk B,Dotan R

更新日期：2019-05-01 00:00:00

abstract：:Teaching adolescents to use self-management strategies may be an effective approach to promoting lifelong physical activity (PA). However, the extent to which adolescents use self-management strategies and their impact on current PA have not been studied previously. The aims of this study were 1) to describe the preva...

journal_title：Pediatric exercise science

authors： Trost SG,Hutley J

更新日期：2015-02-01 00:00:00

abstract：:Internal reliability, convergent validity, and construct validity of the Self-Report Habit Index (SRHI) were examined with respect to physical activity (Study 1) and sedentary behavior (Study 2) among children and adolescents. Internal reliabilities of the SRHI proved to be high in both studies. The SRHI correlated si...

journal_title：Pediatric exercise science

authors： Kremers SP,Brug J

更新日期：2008-02-01 00:00:00

abstract：:The purpose of this study was to identify racial differences in physical activity (PA), fitness, and BMI in female 8th-grade sports participants and nonparticipants. Girls from 31 South Carolina middle schools (N = 1,903, 48% White; mean age = 13.6 +/- 0.63) reported PA and previous year sports-team participation, com...

journal_title：Pediatric exercise science

authors： Sirard JR,Pfeiffer KA,Dowda M,Pate RR

更新日期：2008-05-01 00:00:00

abstract：:The objective of this study was to investigate the effect of an 8-week aerobic-exercise training program on ventilatory threshold and ventilatory efficiency in overweight children. Twenty overweight children (BMI > 85th percentile) performed a graded cycle exercise test at baseline and were then randomly assigned to 8...

journal_title：Pediatric exercise science

authors： Kaufman C,Kelly AS,Kaiser DR,Steinberger J,Dengel DR

更新日期：2007-02-01 00:00:00

abstract：:The positive effects of physical training on heart rate variability (HRV) in healthy adults are widely recognized; however, the responsiveness to training in healthy children has not yet been established. The aim of this study was to determine the influence of physical training on HRV in prepubertal healthy children. ...

journal_title：Pediatric exercise science

authors： da Silva CC,Pereira LM,Cardoso JR,Moore JP,Nakamura FY

更新日期：2014-05-01 00:00:00

abstract：:Sex-specific equations for predicting maturity offset, time before or after peak height velocity (PHV), were evaluated in 63 girls and 74 boys from the Fels Longitudinal Study. Serially measured heights (0.1 cm), sitting heights (0.1 cm), weights (0.1 kg), and estimated leg lengths (0.1 cm) from 8 to 18 years were use...

journal_title：Pediatric exercise science

authors： Malina RM,Choh AC,Czerwinski SA,Chumlea WC

更新日期：2016-08-01 00:00:00

abstract：OBJECTIVES:Single sex after-school physical activity programs show potential to prevent unhealthy weight gain. The aim of this study was to assess the acceptability and potential efficacy of single-sex after-school physical activity programs for overweight and at-risk children from low-income communities. DESIGN:7-mon...

journal_title：Pediatric exercise science

authors： Jones RA,Kelly J,Cliff DP,Batterham M,Okely AD

更新日期：2015-11-01 00:00:00

abstract：:This study examined whether active commuting to and from school was associated with more frequent walking and cycling to other neighborhood destinations. Parents reported on free-time physical activity and frequency of active commuting among 1,643 South Australians (9-15 years), as well as their perceptions of risk as...

journal_title：Pediatric exercise science

authors： Dollman J,Lewis NR

更新日期：2007-11-01 00:00:00

abstract：: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 seem...

journal_title：Pediatric exercise science

authors： Nemet D

更新日期：2017-02-01 00:00:00

abstract：OBJECTIVES:This study aims to (1) use the objective activPAL activity monitor to assess physical activity behaviors, including sitting/lying, standing, and both light (LIPA) and moderate-to-vigorous physical activity (MVPA); (2) to develop distinct activity profiles based on time spent in each behavior in a sample of a...

journal_title：Pediatric exercise science

authors： Dowd K,Harrington D,Hannigan A,Purtill H,Kelly SM,Macken AP,Moyna N,O'Gorman CS,Donnelly AE

更新日期：2016-02-01 00:00:00

abstract：:To determine absolute and relative (adjusted for body mass) strength, mean power, and mean velocity for upper and lower body resistance exercises, forty-seven young boys and girls participated in maximal strength testing. Healthy young boys and girls, ages 3- to 7-years old, were tested for one-repetition maximum (1-R...

journal_title：Pediatric exercise science

authors： Fry AC,Irwin CC,Nicoll JX,Ferebee DE

更新日期：2015-08-01 00:00:00

abstract：:The Wingate anaerobic test (WAnT) has not been used to assess individuals with Down syndrome (DS) and it is unknown if it is reliable in this population. We investigated the reliability of the WAnT in 19 adolescents with DS (age = 14.8 yrs; weight = 52.7 kg; height = 146.3 cm). Participants completed, on separate days...

journal_title：Pediatric exercise science

authors： Guerra M,Gine-Garriga M,Fernhall B

更新日期：2009-02-01 00:00:00

abstract：:The pulmonary oxygen uptake (pVO2) kinetic response at the onset of exercise provides a noninvasive window into the metabolic activity of the muscle and a valuable means of increasing our understanding of developmental muscle metabolism. However, to date only limited research has been devoted to investigating the pVO2...

journal_title：Pediatric exercise science

authors： Armstrong N,Barker AR

更新日期：2009-05-01 00:00:00

abstract：:Training adaptation of the left ventricle (LV) and it's reversibility following the cessation of training in adults is well known and also studied in children. In the current study we describe the changes in the LV morphology in association with the training season during a 1.5 year follow-up period. 15 elite adolesce...

journal_title：Pediatric exercise science

authors： Csajági E,Szauder I,Major Z,Pavlik G

更新日期：2015-05-01 00:00:00