EFFECT OF PHYSICAL ACTIVITY ON AGE OF PEAK HEIGHT VELOCITY AND AGE OF MENARCHE

2001 ◽  
Vol 33 (5) ◽  
pp. S34
Author(s):  
R A. Faulkner ◽  
R L. Mirwald ◽  
D A. Bailey ◽  
A D.G. Baxter-Jones
Keyword(s):  
Physical Activity ◽  
Peak Height ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
Age Of Menarche

Maturity-Related Variation in Moderate-to-Vigorous Physical Activity Among 9–14 Year Olds

2009 ◽  
Vol 6 (5) ◽  
pp. 597-605 ◽  
Author(s):  
Eric E. Wickel ◽  
Joey C. Eisenmann ◽  
Gregory J. Welk
Keyword(s):  
Physical Activity ◽  
Vigorous Physical Activity ◽  
Peak Height ◽  
Height Velocity ◽  
Chronological Age ◽  
Activity Levels ◽  
Peak Height Velocity ◽  
The Mean ◽  
And Gender ◽  
Biological Maturity

Background:This study compared physical activity levels among early, average, and late maturing boys and girls.Methods:Physical activity was assessed with an Actigraph accelerometer in 161 (76 boys, 85 girls) 9 to 14 year olds over 7 consecutive days. Anthropometric variables were measured and the maturity offset (ie, years from peak height velocity) was predicted. Biological maturity groups (early, average, and late) were created based on the mean estimated age at peak height velocity for boys and girls separately.Results:Levels of moderate-to-vigorous physical activity (MVPA) were similar between early, average, and late maturing boys and girls after adjusting for differences in chronological age. Levels of MVPA progressively declined across chronological age in boys and girls (P < .001) and gender differences existed at 10-, 12-, and 13-years, with boys having higher levels than girls (P < .05). When aligned according to biological age, gender-related differences in MVPA did not exist.Conclusions:Within this sample of 9 to 14 year old boys and girls, there were no significant differences in MVPA among early, average, and late maturing individuals.

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 Effect of biological maturation on gross motor coordination in boys: a mediation analysis

2020 ◽  
Vol 33 ◽  
Author(s):  
Douglas Henrique Bezerra-Santos ◽  
Leonardo Gomes de Oliveira Luz ◽  
Braulio Patrick da Silva-Lima ◽  
Ingrid Kelly Alves dos Santos-Pinheiro ◽  
Arnaldo Tenório da Cunha-Júnior ◽  
...  
Keyword(s):  
Physical Activity ◽  
Motor Coordination ◽  
Peak Height ◽  
Early Years ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
Gross Motor ◽  
Sitting Height ◽  
Biological Maturation ◽  
Walking Backward

Abstract Introduction: The literature emphasizes the importance of acquiring good motor coordination in the early years of life and its relationship with physical fitness and physical activity during adolescence and adulthood. Objective: To analyze the effect of biological maturation on the motor coordination in boys. Method: The sample was composed by 203 boys between 11 and 14 years old. Height, body mass, sitting height, waist circumference (WC) and skinfolds were measured. Somatic maturation (SM) was assessed by maturity offset (estimated age at peak height velocity). The gross motor coordination was evaluated by Körperkoordinationstest für Kinder (KTK) battery. Results: The SM exerted an effect on the walking backward on balance beams (WB) mediated by the WC. Conclusion: The results showed that the performance of boys in the WB was negatively influenced by the greater volume of fat in the trunk related to a more advanced state of SM.

scholarly journals The Relationship between Physical Activity and Bone during Adolescence Differs according to Sex and Biological Maturity

2010 ◽  
Vol 2010 ◽  
pp. 1-9 ◽  
Author(s):  
Benjamin K. Weeks ◽  
Belinda R. Beck
Keyword(s):  
Physical Activity ◽  
Bone Mass ◽  
Muscle Power ◽  
Vertical Jump ◽  
Broadband Ultrasound Attenuation ◽  
Tanner Stage ◽  
Peak Height ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
Tissue Mass

This study examines the relationships between bone mass, physical activity, and maturational status in healthy adolescent boys and girls.Methods. Ninety-nine early high-school (Year 9) students were recruited. Physical activity and other lifestyle habits were recorded via questionnaire. Anthropometrics, muscle power, calcaneal broadband ultrasound attenuation (BUA), bone mineral content (BMC), and lean tissue mass were measured. Maturity was determined by Tanner stage and estimated age of peak height velocity (APHV).Results. Boys had greater APHV, weight, height, muscle power, and dietary calcium than girls (). Boys exhibited greater femoral neck BMC and trochanteric BMC while girls had higher BUA and spine BMAD (). Physical activity and vertical jump predicted BMAD and BUA most strongly for boys whereas years from APHV were the strongest predictor for girls.Conclusion. Sex-specific relationships exist between physical activity, maturity and bone mass during adolescence.

The influence of physical activity on lean mass accrual during adolescence: a longitudinal analysis

2008 ◽  
Vol 105 (2) ◽  
pp. 734-741 ◽  
Author(s):  
Adam D. G. Baxter-Jones ◽  
Joey C. Eisenmann ◽  
Robert L. Mirwald ◽  
Robert A. Faulkner ◽  
Donald A. Bailey
Keyword(s):  
Physical Activity ◽  
Body Mass ◽  
Lean Mass ◽  
Normal Growth ◽  
Peak Height ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
Random Effects Models ◽  
Childhood Physical Activity ◽  
Total Body

During childhood, physical activity is likely the most important modifiable factor for the development of lean mass. However, the effects of normal growth and maturation must be controlled. To distinguish effects of physical activity from normal growth, longitudinal data are required. One hundred nine boys and one hundred thirteen girls, participating in the Saskatchewan Pediatric Bone Mineral Accrual Study, were repeatedly assessed for 6 yr. Age at entry was 8–15 yr. Stature, body mass, and physical activity were assessed biannually. Body composition was assessed annually by dual-energy X-ray absorptiometry. Physical activity was determined using the physical activity questionnaires for children and adolescence. Biological age was defined as years from age of peak height velocity. Data were analyzed using multilevel random-effects models. In boys, it was found that physical activity had a significant time-dependent effect on lean mass accrual of the total body (484.7 ± 157.1 g), arms (69.6 ± 27.2 g), legs (197.7 ± 60.5 g), and trunk (249.1 ± 91.4 g) ( P < 0.05). Although the physical activity effects were similar in the girls (total body: 306.9 ± 96.6 g, arms: 31.4 ± 15.5 g, legs: 162.9 ± 40.0 g, and trunk: 119.6 ± 58.2 g; P < 0.05), boys for the same level of activity accrued, depending on the site, between 21 and 120% more absolute lean mass (g). In conclusion, habitual physical activity had a significant independent influence on the growth of lean body mass during adolescence, once biological maturity and stature were controlled.

scholarly journals Physical Activity–Related Injury Profile in Children and Adolescents According to Their Age, Maturation, and Level of Sports Participation

2017 ◽  
Vol 9 (2) ◽  
pp. 118-125 ◽  
Author(s):  
Lara Costa e Silva ◽  
Maria Isabel Fragoso ◽  
Júlia Teles
Keyword(s):  
Physical Activity ◽  
Injury Risk ◽  
Injury Rate ◽  
Sports Participation ◽  
Bone Age ◽  
Peak Height ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
Biological Maturation ◽  
Early Maturing

Background: Physical activity (PA) is beneficial, enhancing healthy development. However, one-third of school-age children practicing sports regularly suffer from an injury. These injuries are associated with sex, chronological age, and PA level. Purpose: To identify the importance of age, PA level, and maturity as predictors of injury in Portuguese youth. Study Design: Descriptive epidemiological study. Level of Evidence: Level 3. Methods: Information about injury and PA level was assessed via 2 questionnaires (LESADO RAPIL II) from 647 subjects aged 10 to 17 years. Maturity offset according to Mirwald (time before or after peak height velocity) and Tanner-Whitehouse III bone age estimates were used to evaluate maturation. Binary logistic regression and gamma regression were used to determine significant predictors of injury and injury rate. Results: Injury occurrence was higher for both sexes in recreational, school, and federated athletes (athletes engaged in sports that are regulated by their respective federations, with formal competition). These injuries also increased with age in boys and in the higher maturity offset group in girls. Injury rate was higher for both sexes in the no sports participation group. Early-maturing girls, with higher bone age and lower maturity offset, showed higher injury rate. Conclusion: Injuries in Portuguese youth were related to PA level, age, and biological maturation. Recreational, school, and federated athletes had more injury ocurrences while subjects with no sports participation had higher injury risk. Older subjects had more injuries. Early-maturing girls that had just passed peak height velocity may be particularly vulnerable to risk of sports injury because of the growing process. Clinical Relevance: Increased knowledge about injury with specific PA exposure data is important to an overall risk management strategy. This study has deepened the association between injury and biological maturation variables.

The relative rate of maturation and its psychological effect

1987 ◽  
Vol 19 (1) ◽  
pp. 73-88 ◽  
Author(s):  
Cheryl Sorenson Goodson ◽  
Paul L. Jamison
Keyword(s):  
Peer Relationships ◽  
Relative Rate ◽  
Peak Height ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
Additional Information ◽  
Self Confidence ◽  
Future Goals ◽  
Age Of Menarche ◽  
Adequate Measurement

SummaryGrowth and psychological data for 74 participants in the Fels Longitudinal Study are analysed to determine the influence of the relative timing of maturation upon psychological attributes related to interests, abilities, self-confidence, peer relationships, and future goals. It is suggested that neither age at peak height velocity for either sex, nor age of menarche for girls, represents an adequate measurement of relative maturity status. A new variable that can be used for both sexes, relative maturity, is suggested and computed using peak height velocity as well as the additional information gained from the percentage of adult stature achieved at that time.Results of separate significance tests using peak height velocity and relative maturity as independent variables reveal early maturers to be more self-confident in specific abilities and also more gregarious during adolescence with higher educational and vocational expectations for the future, while the later maturer is less likely to be influenced by his peers and to have less ambitious long-range goals.

scholarly journals Breakfast: A Crucial Meal for Adolescents’ Cognitive Performance According to Their Nutritional Status. The Cogni-Action Project

Nutrients ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1320
Author(s):  
Humberto Peña-Jorquera ◽  
Valentina Campos-Núñez ◽  
Kabir P. Sadarangani ◽  
Gerson Ferrari ◽  
Carlos Jorquera-Aguilera ◽  
...  
Keyword(s):  
Nutritional Status ◽  
Cognitive Performance ◽  
Cognitive Demand ◽  
Positive Association ◽  
Peak Height ◽  
The Body ◽  
Height Velocity ◽  
Peak Height Velocity ◽  
High Quality ◽  
Action Project

This study aimed to determine whether pupils who have breakfast just before a cognitive demand, do not regularly skip breakfast, and consume a high-quality breakfast present higher cognitive performance than those who do not; furthermore, to establish differences according to their nutritional status. In this study, 1181 Chilean adolescents aged 10–14 years participated. A global cognitive score was computed through eight tasks, and the body mass index z-score (BMIz) was calculated using a growth reference for school-aged adolescents. The characteristics of breakfast were self-reported. Analyses of covariance were performed to determine differences in cognitive performance according to BMIz groups adjusted to sex, peak height velocity, physical fitness global score, and their schools. A positive association was found in adolescents’ cognitive performance when they had breakfast just before cognitive tasks, did not regularly skip breakfast, presented at least two breakfast quality components, and included dairy products. No significant differences were found between breakfast components, including cereal/bread and fruits/fruit juice. Finally, pupils who were overweight/obese who declared that they skipped breakfast regularly presented a lower cognitive performance than their normal-BMIz peers. These findings suggest that adolescents who have breakfast just prior to a cognitive demand and regularly have a high quality breakfast have better cognitive performance than those who do not. Educative nutritional strategies should be prioritized, especially in “breakfast skippers” adolescents living with overweight/obesity.

scholarly journals Growth in achondroplasia, from birth to adulthood, analysed by the JPA-2 model

2020 ◽  
Vol 33 (12) ◽  
pp. 1589-1595
Author(s):  
Mariana del Pino ◽  
Virginia Fano ◽  
Paula Adamo
Keyword(s):  
General Population ◽  
Growth Curve ◽  
Growth Velocity ◽  
Adult Height ◽  
Growth Curves ◽  
Peak Height ◽  
Height Growth ◽  
Individual Growth ◽  
Height Velocity ◽  
Peak Height Velocity

AbstractObjectivesIn general population, there are three phases in the human growth curve: infancy, childhood and puberty, with different main factors involved in their regulation and mathematical models to fit them. Achondroplasia children experience a fast decreasing growth during infancy and an “adolescent growth spurt”; however, there are no longitudinal studies that cover the analysis of the whole post-natal growth. Here we analyse the whole growth curve from infancy to adulthood applying the JPA-2 mathematical model.MethodsTwenty-seven patients, 17 girls and 10 boys with achondroplasia, who reached adult size, were included. Height growth data was collected from birth until adulthood. Individual growth curves were estimated by fitting the JPA-2 model to each individual’s height for age data.ResultsHeight growth velocity curves show that after a period of fast decreasing growth velocity since birth, with a mean of 9.7 cm/year at 1 year old, the growth velocity is stable in late preschool years, with a mean of 4.2 cm/year. In boys, age and peak height velocity in puberty were 13.75 years and 5.08 cm/year and reach a mean adult height of 130.52 cm. In girls, the age and peak height velocity in puberty were 11.1 years and 4.32 cm/year and reach a mean adult height of 119.2 cm.ConclusionsThe study of individual growth curves in achondroplasia children by the JPA-2 model shows the three periods, infancy, childhood and puberty, with a similar shape but lesser in magnitude than general population.

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