scholarly journals The Study of Maturational Timing Effect in Elite Portuguese Adolescent Basketball Players: Anthropometric, Functional and Game Performance Implications

2021 ◽  
Vol 11 (21) ◽  
pp. 9894
Author(s):  
Isabel Fragoso ◽  
Sérgio Ramos ◽  
Júlia Teles ◽  
Anna Volossovitch ◽  
António Paulo Ferreira ◽  
...  
Keyword(s):  
Peak Height ◽  
Upper Body ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
Basketball Players ◽  
Cross Sectional ◽  
Male Adolescents ◽  
Body Strength ◽  
Upper Body Strength ◽  
Game Performance

To estimate age at peak height velocity (APHV) in Portuguese male adolescents and; test the effect of maturational status in physical fitness attributes and individual game performance of U-14 basketball players. One mixed-longitudinal cohort with a sample of 439 Portuguese male adolescents and; one cross sectional sample of 172 Portuguese elite U-14 basketball players. The on-time group was defined within a 1-year band (more or less) from mean APHV. Preece-Baines model 1 was adopted to fit the mean stature curve. Independent samples t-tests and Kruskal-Wallis tests were performed and effect size (partial eta square) was calculated. The growth fitting revealed an APHV around 13.45 years for Portuguese male adolescents. Early maturing players exceeded significantly their peers in body size and composition, jump power and upper body strength. Early and on-time maturing players scored better in rebounds won per game (APHV = 13.81, 13.30 years), Performance Index Rating (PIR) and points scored per minute. Maturation influences morphology attributes and strength regardless of the APHV (13.81, 13.45, 13.30 years) used to obtain the cut-off points. It is recommended to use the new Portuguese mean APHV value to avoid extreme classifying bias groups.

scholarly journals Somatic maturation and the relationship between bone mineral variables and types of sports among adolescents: cross-sectional study

2017 ◽  
Vol 135 (3) ◽  
pp. 253-259 ◽  
Author(s):  
Ricardo Ribeiro Agostinete ◽  
Igor Hideki Ito ◽  
Han Kemper ◽  
Carlos Marcelo Pastre ◽  
Mário Antônio Rodrigues-Júnior ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Bone Mineral ◽  
Peak Height ◽  
Cross Sectional Study ◽  
Height Velocity ◽  
Whole Body ◽  
Sectional Study ◽  
Peak Height Velocity ◽  
Mineral Density ◽  
Cross Sectional

ABSTRACT CONTEXT AND OBJECTIVE: Peak height velocity (PHV) is an important maturational event during adolescence that affects skeleton size. The objective here was to compare bone variables in adolescents who practiced different types of sports, and to identify whether differences in bone variables attributed to sports practice were dependent on somatic maturation status. DESIGN AND SETTING: Cross-sectional study, São Paulo State University (UNESP). METHODS: The study was composed of 93 adolescents (12 to 16.5 years old), divided into three groups: no-sport group (n = 42), soccer/basketball group (n = 26) and swimming group (n = 25). Bone mineral density and content were measured using dual-energy x-ray absorptiometry and somatic maturation was estimated through using peak height velocity. Data on training load were provided by the coaches. RESULTS: Adolescents whose PHV occurred at an older age presented higher bone mineral density in their upper limbs (P = 0.018). After adjustments for confounders, such as somatic maturation, the swimmers presented lower values for bone mineral density in their lower limbs, spine and whole body. Only the bone mineral density in the upper limbs was similar between the groups. There was a negative relationship between whole-body bone mineral content and the weekly training hours (β: -1563.967; 95% confidence interval, CI: -2916.484 to -211.450). CONCLUSION: The differences in bone variables attributed to sport practice occurred independently of maturation, while high training load in situations of hypogravity seemed to be related to lower bone mass in swimmers.

scholarly journals Hubungan Status Gizi dan Aktivitas Fisik dengan Kejadian Hipertensi Remaja

Jurnal Gizi ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 10
Author(s):  
Romadhiyana Kisno Saputri ◽  
Akhmad Al-Bari ◽  
Ria Indah Kusuma Pitaloka
Keyword(s):  
Physical Activity ◽  
Nutritional Status ◽  
Quantitative Research ◽  
Peak Height ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
Cross Sectional ◽  
Obesity And Overweight ◽  
Increase Risk ◽  
Overweight Adolescents

Adolescence is peak height velocity that affect changes in body composition, rapidgrowth on weight, bone mass, pysical activity and nutritional status. Overweight and lack ofphysical activity are risk factors of hyertension in adolescents. Overweight adolescents havea 4,85 times risk of developig hypertension compared to adolescents with normal nutritionalstatus. Lack of physical activity has 7,86 times the risk of developing hypertension thanadolescents with active physical activity. Hypertension in adolescents increase risk ofmorbidity and mortality in adults. This study aim to determine the correlation between nutritional status and physicalactivity with hypertension in adolescents. A quantitative research with cross sectional designwas developed.  Respondents in this study were 75  college students. Data analysis usingSpearman’s Correlation test. Proportion of obesity and overweight was 20%.  Physical activity of the respondentsbelongs to light category. The incidence of hypertension I 14,67% and hypertension II2,67%. Results shows that there was correlation between nutritional status and physicalactivity with hypertension in adolescents.Keywords :  nutritional status, physical activity, hypertension, adolescents  

scholarly journals Self-perceived social relationships are related to health risk behaviors and mental health in adolescents

2021 ◽  
Vol 26 (suppl 3) ◽  
pp. 5273-5280
Author(s):  
Danilo Rodrigues Pereira da Silva ◽  
André de Oliveira Werneck ◽  
Ricardo Ribeiro Agostinete ◽  
Afrânio de Andrade Bastos ◽  
Rômulo Araújo Fernandes ◽  
...  
Keyword(s):  
Mental Health ◽  
Public Schools ◽  
Social Relationships ◽  
Tobacco Smoking ◽  
Health Risk Behaviors ◽  
Peak Height ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
Cross Sectional ◽  
Biological Maturation

Abstract Although changes have been observed in social relationships in the recent years, especially among younger generations, little evidence is available concerning factors associated with adolescents’ perceived social relationships. In this study we investigated the association between self-perceived social relationships, health-related behaviors, biological maturation, and mental health in adolescents. This is a cross-sectional study conducted with 1,336 adolescents (605 boys and 731 girls) aged between 10 to 17 years from public schools. Self-perceived social relationships (family, friends, and teachers), feelings of stress and sadness, academic performance, tobacco smoking, alcohol and fat consumption, physical activity, and screen time were evaluated by a questionnaire. Biological maturation was assessed by the peak height velocity. We observed that worse perceived social relationships were associated with tobacco smoking (family and teachers), alcohol drinking (teachers), higher consumption of fat (teachers), greater feelings of stress (family and teachers) and sadness (family and friends), and poor academic achievement (friends and teachers).

scholarly journals Aptidão cardiorrespiratória em crianças e adolescentes

2019 ◽  
Vol 20 (6) ◽  
pp. 535-543
Author(s):  
Kenia Rejane de Oliveira Batista ◽  
Mona Gizelle Dreger de Oliveira ◽  
Carla Fabiane dos Santos Lemos ◽  
Josiene De Oliveira Couto ◽  
Nara Michelle Moura Soares ◽  
...  
Keyword(s):  
Cardiorespiratory Fitness ◽  
Age Groups ◽  
Peak Height ◽  
Cross Sectional Study ◽  
Height Velocity ◽  
Age Group ◽  
Peak Height Velocity ◽  
Cross Sectional ◽  
Significance Level ◽  
And Gender

Cardiorespiratory fitness is an important health status indicator. The purpose of this study was to verify the cardiorespiratory fitness according to age group and gender in children and adolescents from Sergipe, Brazil. It is a cross-sectional study with sample consisting of 195 adolescents of both genders with mean age of 11.75 ± 3.0 years. For the characterization of participants, a questionnaire with age and gender identification designed by researchers was used. Subsequently, participants were submitted to anthropometric evaluation in order to estimate the maturational stage by means of the peak height velocity (PHV). The 20-meter back-and-forth test was used to estimate cardiorespiratory fitness. Two-way ANOVA was applied with sample divided into two groups (“up to 13 years” and “above 13 years”). Polynomial contrast was used to identify the type of tendency for cardiorespiratory fitness, and simple contrast for multiple comparisons. All procedures were performed using SPSS version 22.0 software, considering 5% significance level. In the “over 13 years” group, there was a significant effect on the cardiorespiratory capacity behavior according to “gender” [F(1, 45) = 5.54, p = 0.02, r = 0.33] and “age” [F(4.45) = 3.37, p = 0.02, r = 0.48]. The simple contrast identified increased cardiorespiratory fitness behavior in relation to age groups of 15 and 16 year when compared to the age group of 14 years. It was concluded that gender and age positively influence cardiorespiratory fitness from the maturational reference age in the study group.

scholarly journals Morphological and Fitness Attributes of Young Male Portuguese Basketball Players: Normative Values According to Chronological Age and Years From Peak Height Velocity

2021 ◽  
Vol 3 ◽  
Author(s):  
Sérgio Antunes Ramos ◽  
Luis Miguel Massuça ◽  
Anna Volossovitch ◽  
António Paulo Ferreira ◽  
Isabel Fragoso
Keyword(s):  
Body Mass ◽  
Handgrip Strength ◽  
Young Male ◽  
Peak Height ◽  
Height Velocity ◽  
Chronological Age ◽  
Normative Values ◽  
Peak Height Velocity ◽  
Basketball Players ◽  
Arm Span

The aims of the present study were: (i) to describe the structural and functional attributes of young male Portuguese basketball players aged 12–16 years and (ii) to generate normative data according to chronological age and years from peak height velocity. A total of 281 male Portuguese young basketball players between the ages of 12 and 16 years were assessed in this study. Chronological age, maturity parameters (maturity offset and predicted age at peak height velocity), morphological (body mass, height, and skinfolds and length), and fitness (sprint, change of direction ability, jump, and upper body strength) attributes were measured. Descriptive statistics were determined for the age and maturity status, and the 10th, 25th, 50th, 75th, and 90th percentiles were chosen as reference values. Descriptive and normative values of the players' morphological and fitness attributes, stratified by age and maturity status, are provided. The normative values of age at peak height velocity (category YAPHV = 0) showed that regional basketball players presented average values (50th percentile) of 169.8 cm for height, 173.3 cm for arm span, 55.6 kg for body mass, 3.34 s for the 20-m speed test, 10.31 s for the T-test, 4.75 m for the 2-kg medicine ball throw, 66.9 kg for the combined right and left handgrip strength, and 30.1 and 35.9 cm for jump height in the countermovement jump (CMJ) and CMJ with arm swing, respectively. In conclusion, these results may be helpful to quantify and control an athlete's performance over time and to adjust strength and conditioning programs to biological demands.

Activity Behaviors and Physiological Characteristics of Women With Advanced-Stage Ovarian Cancer: A Preliminary Cross-sectional Investigation

2018 ◽  
Vol 28 (3) ◽  
pp. 604-613 ◽  
Author(s):  
Christelle Schofield ◽  
Robert U. Newton ◽  
Paul A. Cohen ◽  
Daniel A. Galvão ◽  
Joanne A. McVeigh ◽  
...  
Keyword(s):  
Physical Activity ◽  
Cardiorespiratory Fitness ◽  
Vigorous Physical Activity ◽  
Upper Body ◽  
Advanced Stage ◽  
Cross Sectional ◽  
Body Strength ◽  
Upper Body Strength ◽  
Sedentary Bouts ◽  
Muscle Cross Sectional Area

ObjectivesOvarian cancer (OC) survivors experience many disease and treatment adverse effects. However, the impact of OC and its treatment on objective activity behaviors and physiological status have not been examined. The purpose of this study was to compare objectively measured activity behaviors and physiological characteristics of advanced-stage OC survivors to age-matched controls.MethodsTwenty stage III–IV OC survivors and 20 controls completed assessments of activity behaviors (7-day accelerometry), physical function (400-meter walk as indicator of cardiorespiratory fitness, repeated chair rise, 6-meter walking tests), muscle strength (1-repetition maximum and handgrip), body composition (dual-energy x-ray absorptiometry), and musculoskeletal morphology (peripheral quantitative computed tomography).ResultsCompared with controls, OC survivors spent more time/day in prolonged sedentary bouts (P = 0.039, r = 0.32), had lower cardiorespiratory fitness (P = 0.041, r = 0.33) and upper body strength (P = 0.023, r = 0.37), had higher areal bone mineral content (P = 0.047, r = 0.33) and volumetric trabecular density (P = 0.048, r = 0.31), but were not different in other measures of body composition nor in muscle morphology (P > 0.050). Only 20% (n = 4) of OC survivors accrued 150 minutes/week or greater moderate and vigorous physical activity (MVPA) time in 10-minute bouts or greater. Moderate and vigorous physical activity time/day in 10-minute bouts or greater was strongly associated with cardiorespiratory fitness (P = 0.001, ρ = −0.702) and lower extremity function (P = 0.019, ρ = −0.519) and moderately associated with muscle cross-sectional area (P = 0.035, ρ = 0.473).ConclusionsPosttreatment OC survivors spent more time in prolonged sedentary bouts and had lower cardiorespiratory fitness and upper body strength compared with controls. Moderate and vigorous physical activity was associated with physical function and muscle cross-sectional area. Future studies should test the efficacy of exercise interventions to increase MVPA, reduce sedentary behavior, and increase cardiorespiratory fitness and muscle strength in OC survivors.

scholarly journals Comparison of Body Mass Index and fat percentage criteria classification of 7–13 year-old rural boys in South Africa

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Maya van Gent ◽  
Anita Pienaar ◽  
Habib Noorbhai
Keyword(s):  
Nutritional Status ◽  
Statistical Significance ◽  
Age Groups ◽  
Peak Height ◽  
Height Velocity ◽  
Fat Percentage ◽  
Peak Height Velocity ◽  
Cross Sectional ◽  
Kappa Agreement

Abstract Background The aim of this paper was to investigate whether BMI and fat percentage classification criteria, would classify a sample of 7–13 year old boys from a rural background in similar nutritional categories. Methods A cross-sectional study with a stratified random sampling included 601 rural boys (7–13 years old). Fat percentage criteria classification and BMI were calculated and compared. Maturity status, and age at peak height velocity (PHV) were indirectly determined. Statistical techniques included descriptive statistics, Pearson product correlation coefficients, the Kappa agreement test and the McNemar’s test. The level of statistical significance was set at p ≤ 0.05. Results All age groups presented with statistically significant high correlations between BMI and fat percentage, and low to medium correlations between fat percentage and maturity age (MA). Measurement of agreement between BMI and fat percentage classifications showed poor to fair agreements for all age groups, with the exception of the eight-year old group which presented a moderate agreement. Conclusions Classifications based on BMI and fat percentage, results in different classifications for the same population. Until further research has been done to determine the best classification for nutritional status, it is recommended that both classification methods be used for more accurate classification of nutritional status.

scholarly journals Comparison of Body Mass Index (BMI) and fat percentage criteria classification of 7-13 year old rural boys in the Eastern Cape, South Africa

2020 ◽  
Author(s):  
Maya van Gent ◽  
Anita Pienaar ◽  
Habib Noorbhai
Keyword(s):  
Statistical Significance ◽  
Age Groups ◽  
Peak Height ◽  
Fat Free Mass ◽  
Height Velocity ◽  
Fat Percentage ◽  
Peak Height Velocity ◽  
Cross Sectional ◽  
Assessment Protocol ◽  
Kappa Agreement

Abstract Background: The aim of this paper is to investigate whether BMI and fat percentage classification criteria, would classify a sample in similar criteria’s. Methods: A cross-sectional study with a stratified random sampling included 602 rural boys (7–13 years old). Fat percentage criteria classification and BMI was measured Maturity, age and peak height velocity (PHV) were indirectly determined. Statistical techniques included descriptive, Pearson product correlation, the Kappa agreement test and the McNemar’s test. The level of statistical significance was set at p ≤ 0.05. Results: All age groups presented statistically significant high correlations between BMI and fat percentage, and low to medium correlations between fat percentage and maturity age (MA). Measurement of agreement between BMI and fat percentage classifications showed poor to fair agreements for all age groups, with the exception of the eight-year old group which presented a moderate agreement. Conclusion: Classifications according to BMI and fat percentage, results in different classifications for the same population. Classifications for categorizing purpose should make use of adiposity rather than BMI, as it includes fat free mass within the assessment protocol.

scholarly journals Prevalence of overweight in adolescents from a Southern Brazilian city according to different anthropometric indexes

2021 ◽  
Vol 39 ◽  
Author(s):  
Augusto Gerhart Folmann ◽  
Vaneza Lira Waldow Wolf ◽  
Everton Paulo Roman ◽  
Gil Guerra-Júnior
Keyword(s):  
Peak Height ◽  
Cross Sectional Study ◽  
World Health ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
Cross Sectional ◽  
Control And Prevention ◽  
Maturation Stages ◽  
Nc Data ◽  
Health Organization

ABSTRACT Objective: To identify the prevalence of overweight in adolescents according to different classification criteria for obesity and somatic maturation stages. Methods: Cross-sectional study in 10 schools in a city from Southern Brazil, with 1715 adolescents. Height, weight, waist circumference, and neck circumference (NC) data were collected. Body Mass Index was classified according to World Health Organization (WHO) and Centers for Disease Control and Prevention criteria, and the waist-to-height ratio (WHtR) was classified according to Brazilian and European cut-off points. Somatic maturation was obtained through the Peak Height Velocity. The prevalence data were compared between sex and stages of somatic maturation; the concordance between different criteria was verified. Results: The prevalence of overweight was high in both sexes; WHO criteria showed that 34.5% of boys and 29.3% of girls were overweight. For the WHtR, the prevalence was 28.4% in boys and 23.7% in girls. NC classified 13.8% of boys and 15.8% of girls as being overweight. The prevalence of overweight was higher in adolescents before complete somatic maturation. Conclusions: The prevalence of overweight was high among adolescents. The boys presented higher frequency of overweight, except if NC was used to classify them. Adolescents before somatic maturation had a higher prevalence of overweight. NC showed a lower ability to track obese adolescents.

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