{"title":"Erratum. Light-Intensity Physical Activity and Sedentary Behavior Are Associated With Blood Pressure Levels in Adolescents.","authors":"","doi":"10.1123/pes.2024-0154","DOIUrl":"10.1123/pes.2024-0154","url":null,"abstract":"","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"303"},"PeriodicalIF":1.4,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142394731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eleni Bassa, Afroditi C Lola, Alexandra Melliou, Maria Prassa, Georgia Stavropoulou, Nikolaos Ziogas
{"title":"Agility Ladder Training Combined With Plyometric or Multidirectional Speed Drills: Short-Term Adaptations on Jump, Speed, and Change of Direction Performance in Young Female Volleyball Players.","authors":"Eleni Bassa, Afroditi C Lola, Alexandra Melliou, Maria Prassa, Georgia Stavropoulou, Nikolaos Ziogas","doi":"10.1123/pes.2024-0024","DOIUrl":"10.1123/pes.2024-0024","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of this study was to investigate the effect of agility ladder training combined with plyometric or multidirection speed drills, on performance in young female volleyball players.</p><p><strong>Methods: </strong>Seventy-six young female volleyball players were randomly distributed into 3 maturity-matched groups: (1) the agility ladder + plyometric drills group, (2) the agility ladder + multidirection speed drills group, and (3) the control group. Both experimental groups followed a 6-week training program, twice weekly, in addition to the regular volleyball training sessions, while the control group participated only in the regular volleyball training sessions. Assessments pretraining and posttraining included countermovement jump, 20-m sprint, and agility T test. Results: Both experimental groups improved T-test performance (P < .005) but only agility ladder + multidirection speed drills group outperformed the control group (P < .05).</p><p><strong>Conclusions: </strong>Agility ladder training programs combined with either plyometric or speed drills can improve change of direction performance in young female volleyball players but only the combination of agility ladder with multidirection speed drills is more effective than volleyball training per se. The small effectiveness of these protocols may be attributed to the short training period, or to the fact that training elements were combined in a single session. This hypothesis remains to be further investigated.</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"248-257"},"PeriodicalIF":1.4,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142331082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Erratum. Exploring 24-Hour Movement Behaviors in Early Years: Findings From the SUNRISE Pilot Study in Tunisia.","authors":"","doi":"10.1123/pes.2024-0150","DOIUrl":"10.1123/pes.2024-0150","url":null,"abstract":"","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"302"},"PeriodicalIF":1.4,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142331083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Exploring 24-Hour Movement Behaviors in Early Years: Findings From the SUNRISE Pilot Study in Tunisia.","authors":"Mohamed Amine Ltifi, Olfa Turki, Ghaith Ben-Bouzaiene, Jeffrey Cayaban Pagaduan, Anthony Okely, Mohamed Souhaiel Chelly","doi":"10.1123/pes.2023-0152","DOIUrl":"10.1123/pes.2023-0152","url":null,"abstract":"<p><strong>Purpose: </strong>The International Study of Movement Behaviors in the Early Years (SUNRISE) was conducted in Tunisia to assess the proportion of preschoolers who met the World Health Organization guidelines for physical activity, sedentary behavior, and sleep. The study also evaluated the feasibility of the methods for the SUNRISE study.</p><p><strong>Methods: </strong>Five kindergartens were recruited from urban and rural areas in Tunisia. Physical activity and sleep duration were assessed using a waist-worn ActiGraph. Screen time and sleep quality were assessed via an interview-administered parent questionnaire. The NIH Toolbox was used.</p><p><strong>Results: </strong>A total of 112 preschoolers were assessed (50 boys, age = 4.1 [0.58]). Only 18% of children met all recommendations of the World Health Organization guidelines, while 53% met the sedentary screen time (in minutes per day), and 41% met physical activity recommendation (in minutes per day). Eighty-one percent of children met the sleep duration recommendation (in minutes per day). There was good compliance with the ActiGraph protocol.</p><p><strong>Conclusions: </strong>This pilot study provided important insights into the feasibility of the study and the movement behaviors of Tunisian preschool children. The results suggest there is a need to promote healthy levels of physical activity and sedentary screen time in children, which should be a priority in public health initiatives, including preschool curricula, in Tunisia.</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"94-101"},"PeriodicalIF":1.4,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139747579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trine K Møller,Peter Krustrup,Jan C Brønd,Nina R W Geiker,Malte N Larsen
{"title":"Essential Improvements in Fat Percentage and Cardiometabolic Fitness After a Residential Stay for Socially Vulnerable Children-With and Without the \"11 for Health\" Concept.","authors":"Trine K Møller,Peter Krustrup,Jan C Brønd,Nina R W Geiker,Malte N Larsen","doi":"10.1123/pes.2023-0137","DOIUrl":"https://doi.org/10.1123/pes.2023-0137","url":null,"abstract":"The Danish Christmas Seal Homes offer a 10-week residential stay for socially vulnerable children. We aimed to examine the effects on body composition and cardiometabolic fitness variables of the standard program (SG) and whether substituting physical activity sessions with sessions from a football-based health education program is beneficial for the participants (\"11 for Health\"; SG+). Three hundred and nine children participated in SG (12.4 [1.6] y) and 305 in SG+ (12.4 [1.4] y). Fat percentage was lowered by 6% for females (from 37% to 31%) and 8% for males (from 36% to 28%), with no between-group differences. We observed improvements in systolic and diastolic blood pressure (3 and 5 mm Hg, respectively), resting heart rate (10 beats/min), aerobic fitness, jump performance, and relative muscle mass with no between-group differences. Furthermore, there were between-group differences in insulin levels for females (1.7 pmol/L; 95% CI, 0.3 to 3.0) and postural balance for males (1.0 s; 95% CI, 0.0 to 2.0), both in favor of SG+, and covered distance in the Andersen test for females (26 m; 95% CI, 3 to 49) in favor of SG. In conclusion, a 10-week stay at the Danish Christmas Seal Home resulted in clinically relevant improvement in fat percentage and cardiometabolic fitness in socially vulnerable children, regardless of the program type.","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":"30 1","pages":"1-13"},"PeriodicalIF":1.8,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alcibíades Bustamante, José Maia, Carla Santos, Fernando Garbeloto, Olga Vasconcelos, Go Tani, Donald Hedeker, Peter T Katzmarzyk, Sara Pereira
{"title":"Secular Trends in Gross Motor Coordination: A Study of Peruvian Children Living at High Altitude.","authors":"Alcibíades Bustamante, José Maia, Carla Santos, Fernando Garbeloto, Olga Vasconcelos, Go Tani, Donald Hedeker, Peter T Katzmarzyk, Sara Pereira","doi":"10.1123/pes.2023-0170","DOIUrl":"https://doi.org/10.1123/pes.2023-0170","url":null,"abstract":"<p><strong>Purpose: </strong>To (1) describe secular trends in gross motor coordination (GMC) scores by sex and age; (2) investigate GMC trends adjusted for concomitant secular trends in height, weight, and overall physical fitness; and (3) examine trends in children's frequencies within different GMC categories.</p><p><strong>Method: </strong>The sample comprises 1562 Peruvian children (690 in 2009 and 872 in 2019), aged 6-11 years, from Junín (a high-altitude region). GMC was assessed with the KörperkoordinationsTest für Kinder. Physical fitness was assessed with handgrip strength, standing long jump, and shuttle-run test. Height and weight were measured with standardized protocols. Analysis of variance, covariance, and logistic regression were used.</p><p><strong>Results: </strong>A negative secular trend in GMC (based on raw scores) for boys and girls aged 6-8 years was observed. However, a positive trend was observed at 11 years of age but only in boys. Finally, there were no significant changes in the likelihood of children having below-normal GMC from 2009 to 2019.</p><p><strong>Conclusions: </strong>Secular trends in GMC were negative in Peruvian children, especially at 6-8 years of age. Further, body size and physical fitness trends did not affect the negative secular trend. A high prevalence of children had below-normal GMC in both 2009 and 2019.</p>","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":" ","pages":"1-8"},"PeriodicalIF":1.4,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142299573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Majid Mohabbat,Amir Hossein Barati,Azita Azarkeivan,Ehsan Eghbali,Hamid Arazi
{"title":"Acute and Chronic Effects of Interval Aerobic Exercise on Hepcidin, Ferritin, and Liver Enzymes in Adolescents With Beta-Thalassemia Major.","authors":"Majid Mohabbat,Amir Hossein Barati,Azita Azarkeivan,Ehsan Eghbali,Hamid Arazi","doi":"10.1123/pes.2023-0197","DOIUrl":"https://doi.org/10.1123/pes.2023-0197","url":null,"abstract":"PURPOSEThis study aimed to determine the acute and chronic effects of interval aerobic exercise on hepcidin, ferritin, and liver enzymes in adolescents with beta-thalassemia major.METHODSTwenty-six beta-thalassemia major adolescents referred to the Thalassemia Clinic and Research Center were selected as study participants and randomly divided into control (n = 13) and training (n = 13) groups. Participants performed 3 sessions per week for 45 minutes in each session for 8 weeks of aerobic interval exercise with an intensity of 50% to 65% of the heart rate reserve. Blood samples were taken before, immediately after the exercise session, and 48 hours after the last training session, and liver enzymes aspartate aminotransferase, alanine aminotransferase (ALT), alkaline phosphatase (ALP), ferritin, and hepcidin were evaluated.RESULTSThe results showed a decrease in aspartate aminotransferase, ALT, ALP, ferritin, and hepcidin levels due to 8 weeks of aerobic interval training (P = .14, P = .97, P = .03, P < .001, P < .001; respectively). Intergroup changes in all variables except ALT and hepcidin were significant (P < .05). Besides, acute aerobic exercise increased levels of aspartate aminotransferase, ALT, ferritin, and hepcidin (P = .04, P = .52, P < .001, P < .001; respectively), whereas ALP levels decreased (P < .001). In addition, changes in ALP and hepcidin levels were significant between the 2 groups (P = .05, P < .001; respectively).CONCLUSIONBased on the study's results, it can be concluded that 8 weeks of aerobic interval training can decrease ferritin and hepcidin levels, but acute aerobic exercise increases them.","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":"27 1","pages":"1-9"},"PeriodicalIF":1.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Quentin Merlin,Philippe Vacher,Guillaume Martinent,Michel Nicolas
{"title":"Youth Athletes' Self-Esteem: The Impact of Integrated Psychological Skills Training.","authors":"Quentin Merlin,Philippe Vacher,Guillaume Martinent,Michel Nicolas","doi":"10.1123/pes.2024-0005","DOIUrl":"https://doi.org/10.1123/pes.2024-0005","url":null,"abstract":"PURPOSEStudy on the effect of psychological skills training on self-esteem (SE) in young athletes.METHOD10 swimmers and 35 volleyball players, split into an intervention group (25) and a control group (18). The intervention entailed a 3-week psychological skills training program covering arousal management, breathing, relaxation, mental imagery, and self-talk. Multilevel growth curve analyses evaluated SE changes.RESULTSThe intervention group showed significant improvements in multiple SE dimensions-physical self-worth, fitness, athletic competence, strength, and body attractiveness but not general SE.CONCLUSIONSThis study provides initial evidence of a multimodal psychological skills training's effectiveness in enhancing young athletes' domain-specific SE. It highlights the role of domain-specific SE in young athletes' well-being. Future research should examine psychological and physiological correlations and assess the long-term SE development in adolescent athletes.","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":"45 1","pages":"1-9"},"PeriodicalIF":1.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aymen Ben Othman,Saman Hadjizadeh Anvar,José Carlos Aragão-Santos,Anis Chaouachi,David G Behm
{"title":"Age, Sex, and Training Specific Effects on Cross-Education Training.","authors":"Aymen Ben Othman,Saman Hadjizadeh Anvar,José Carlos Aragão-Santos,Anis Chaouachi,David G Behm","doi":"10.1123/pes.2024-0027","DOIUrl":"https://doi.org/10.1123/pes.2024-0027","url":null,"abstract":"An extensive number of publications have examined cross-education effects with adults, primarily investigating contralateral homologous (same) muscles. There are far fewer investigations on cross-education effects on contralateral heterologous (different) muscles and age (youth vs adult) and no studies investigating sex differences. Hence, the objective was to compare cross-education in female and male youth and young adults to contralateral homologous (chest press [CP], elbow flexors and extensors, handgrip isometric strength, and shot put) and heterologous (leg press, knee extension isometric strength, and countermovement jump) muscles. Twenty-eight female adults, 28 female youth, 28 male adults, and 28 male youth (total: 112) were examined before and after an 8-week (3 sessions/wk) unilateral, dominant arm, CP training program. Unilateral testing assessed dominant and nondominant leg press and CP 1-repetition maximum, knee extensors, elbow extensors, elbow flexors, and handgrip maximum voluntary isometric contraction (MVIC) strength, as well as shot put distance and countermovement jump height. Unilateral CP training induced training specific (CP 1-repetition maximum) and nonspecific (elbow extensors, elbow flexors, handgrip MVIC force, and shot put distance) improvements (P < .04, η2: .45-.85) but no significant lower body improvements. There was evidence for testing limb specificity as the dominant arm provided significantly (P < .021, η2: .17-.75) greater training gains than the nondominant arm. Youth's training adaptations exceeded with unilateral CP 1-repetition maximum, elbow extensors MVIC force, and shot put distance (P < .049, η2: .14-.49). No sex main effect differences were apparent. In conclusion, cross-education was training specific (greatest gains with upper body and dominant limbs) with greater benefits for youth and generally no sex differences with the exception of elbow extensors MVIC.","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":"18 1","pages":"1-9"},"PeriodicalIF":1.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Physical Activity Predicts Better Lung Function in Children and Adolescents.","authors":"Fernanda Balbinot,Margaret W Gerbase","doi":"10.1123/pes.2024-0034","DOIUrl":"https://doi.org/10.1123/pes.2024-0034","url":null,"abstract":"PURPOSETo investigate (1) whether physical activity is associated with lung function in children and adolescents, (2) whether this association is modified by the subjects' weight status, and (3) whether this association is mediated by the body mass index.METHODSThis is a cross-sectional study including 460 participants aged 7-17 years, randomly selected from 13 public schools in southern Brazil. Collected data included anthropometric measures, physical activity, screen time, and spirometric measures expressed as percent predicted values. Data were analyzed using multiple linear regression and 2-way analysis of variance.RESULTSThere were positive associations between physical activity and forced vital capacity (β = 3.897, P = .001) and forced expiratory volume in the first second (β = 2.931, P = .021). The effect modification by weight status was not statistically significant (forced vital capacity: Pinteraction = .296 and forced expiratory volume in the first second: Pinteraction = .057). Body mass index did not mediate the association between physical activity and spirometric outcomes (P > .05).CONCLUSIONRegular physical activity was associated with higher forced vital capacity and forced expiratory volume in the first second in children and adolescents. The observed associations were not modified by weight status nor mediated by body mass index. Our results reinforce the importance of regular physical activity for the development of lung function during childhood and adolescence.","PeriodicalId":49712,"journal":{"name":"Pediatric Exercise Science","volume":"183 1","pages":"1-8"},"PeriodicalIF":1.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}