Is Physical Activity Important for Aerobic Power in Young Males and Females?

2003 ◽  
pp. 153-166 ◽  
Author(s):  
H.C.G. Kemper ◽  
L.L.J. Koppes
Keyword(s):  
Physical Activity ◽  
Aerobic Power ◽  
Young Males ◽  
Males And Females

A 15-year physical activity pattern is positively related to aerobic fitness in young males and females (13-27 years)

2001 ◽  
Vol 84 (5) ◽  
pp. 395-402 ◽  
Author(s):  
Han C.G. Kemper ◽  
Jos W.R. Twisk ◽  
Lando L.J. Koppes ◽  
Willem van Mechelen ◽  
G. Bertheke Post
Keyword(s):  
Physical Activity ◽  
Aerobic Fitness ◽  
Activity Pattern ◽  
Physical Activity Pattern ◽  
Young Males ◽  
Males And Females

Influence of Peak Strain on Lumbar Bone Mineral Density: An Analysis of 15-Year Physical Activity in Young Males and Females

1997 ◽  
Vol 9 (2) ◽  
pp. 159-173 ◽  
Author(s):  
Jitske Groothausen ◽  
Hanneke Siemer ◽  
Han C.G. Kemper ◽  
Jos Twisk ◽  
Desiree C. Welten
Keyword(s):  
Physical Activity ◽  
Bone Mineral Density ◽  
Bone Mineral ◽  
Lumbar Bone Mineral Density ◽  
Peak Strain ◽  
Mineral Density ◽  
Total Period ◽  
Young Males ◽  
Males And Females ◽  
And Gender

In 83 males and 99 females, the relation between peak strain physical activity (PSPA) from 13 to 27 years and lumbar bone mineral density (LBMD) at age 27 was studied. Physical activity was measured longitudinally by an interview six times between ages 13 and 27. Peak strain scores based on ground reaction forces were developed to quantify all registrated activities for peak strain. LBMD was determined once at age 27. Four PSPA periods were considered: the teenage period (13–17 years), the period between 13 and 21 years, the adult period (21–27 years), and the total period (13–27 years). In multiple linear regression analyses, with body weight and gender as covariates, PSPA appeared to be a significant positive predictor for LBMD at age 27 in both males and females for all analyzed periods. The explained variance of PSPA for LBMD was the highest (25%) for the total period and the lowest (8%) for the teenage period.

Dispersal patterns in a regional koala population in south-east Queensland

2003 ◽  
Vol 30 (3) ◽  
pp. 281 ◽  
Author(s):  
David S. Dique ◽  
Jim Thompson ◽  
Harriet J. Preece ◽  
Deidré L. de Villiers ◽  
Frank N. Carrick
Keyword(s):  
Urban Areas ◽  
Home Ranges ◽  
Adult Males ◽  
Dispersal Patterns ◽  
Young Males ◽  
Straight Line ◽  
The Social ◽  
Straight Line Distance ◽  
Males And Females ◽  
Natal Home

Koala dispersal was investigated as part of a detailed ecological study of a nationally significant koala population located 20 km south-east of Brisbane, Queensland. From 1996 to 2000, 195 koalas from three sites were captured and fitted with radio-collars. A total of 40 koalas (23 males and 17 females) dispersed from these sites. Most (93%) dispersing individuals were 20–36 months of age. Three adult females (more than 36 months old) dispersed and no adult males dispersed during the study. A significantly higher proportion of young males dispersed than females. Dispersal occurred between June and December, with most dispersal of males commencing in July and August and that of females commencing between September and November prior to, and early in, the annual breeding season. The mean straight-line distance between the natal and breeding home ranges for males and females was similar and was measured at 3.5 km (range 1.1–9.7 km) and 3.4 km (range 0.3–10.6 km) respectively. Dispersing males and females tended to successfully disperse south and west of their natal home ranges and were generally unable to successfully disperse to urban areas within the study area, as a high proportion of the mortality of dispersing koalas was associated with attacks by domestic dogs and with collisions with vehicles on roads. Information from other studies indicates that most young koalas disperse from their natal areas. It is likely that the social behaviour and mating systems of koala populations provide mechanisms for young koalas to disperse. The potential role of dispersal in the dynamics of regional koala populations is discussed.

Self-Control is Associated with Physical Activity and Fitness among Young Males

2012 ◽  
Vol 38 (3) ◽  
pp. 83-89 ◽  
Author(s):  
Marja Ilona Kinnunen ◽  
Johanna Suihko ◽  
Nelli Hankonen ◽  
Pilvikki Absetz ◽  
Piia Jallinoja
Keyword(s):  
Physical Activity ◽  
Self Control ◽  
Young Males

Suicide and unemployment in young people

1999 ◽  
Vol 175 (3) ◽  
pp. 263-270 ◽  
Author(s):  
David Gunnell ◽  
Tom Lopatatzidis ◽  
Daniel Dorling ◽  
Helen Wehner ◽  
Humphrey Southall ◽  
...  
Keyword(s):  
Secular Trends ◽  
Young Males ◽  
Factors Associated ◽  
Economic Climate ◽  
Economic Recessions ◽  
Trend Data ◽  
Recession Rates ◽  
Unemployment Data ◽  
Males And Females ◽  
Old Men

BackgroundThe influence of the macro-economic climate on suicide is unclear. During the recent recession, rates have increased in young males but declined in females.AimsTo investigate associations between unemployment and suicide in 15 – to 44-year-old men and women over a period spanning two major economic recessions (1921–1995). To minimise confounding by changes in method availability, analyses are restricted to suicides using methods other than poisons and gases.MethodTime-series analysis using routine mortality and unemployment data.ResultsThere were significant associations between unemployment and suicide in both males and females. Associations were generally stronger at younger ages.ConclusionsSecular trends in youth suicide may be influenced by unemployment or other factors associated with changes in the macroeconomic climate. These factors appear to affect women to the same extent as men. Although it is not possible to draw firm aetiological conclusions from time-trend data, our findings are in keeping with those of person-based studies.

scholarly journals Aerobic Power in Prepubescent Children with Different Levels of Physical Activity (Potencia Aeróbica en Niños Prepubescentes con Diferentes Niveles de Actividad Física)

Retos ◽  
2015 ◽  
pp. 203-205
Author(s):  
Luis Paulo Gomes Mascarenhas ◽  
Marcos Tadeu Grzelczak ◽  
William Cordeiro de Souza ◽  
Antonio Stabelini Neto ◽  
Yamileth Chacón-Araya ◽  
...  
Keyword(s):  
Physical Activity ◽  
Oxygen Uptake ◽  
Physical Activity Level ◽  
Aerobic Power ◽  
Peak Oxygen Uptake ◽  
Activity Level ◽  
Similar Amount ◽  
Physiological Indicators ◽  
Post Hoc ◽  
Activity Diary

The purpose of the study was to compare the aerobic power of prepubescent children (Tanner 1 stage). Participants were 95 children between 7 and 9 years old, divided into 4 physical activity level groups: a) Trained (n = 24), b) Sport beginners (n = 23), c) Active (n = 24), and d) Sedentary (n = 24). Physical activity level was determined by a three-day physical activity diary. Subjects performed a treadmill Balk protocol to obtain their peak oxygen uptake. Comparisons were made using ANOVA two-way and post hoc Tukey followed-up the significant differences for p< 0,05. Trained, sport beginners and active children presented similar amount of physical activity level, but they significantly differ from the sedentary children (p< 0.05). Overall boys (50.67 ± 8.52 ml/kg/min) had higher relative peak oxygen uptake than girls (45.19 ± 6.44 ml/kg/min). The gender by group interaction showed that this difference is explained by the superior values of the trained boys (58.80 ± 8.98 ml/kg/min) when compared to trained girls (47.51 ± 5.68 ml/kg/min), even though they presented the same amount of physical activity level. The trained group (53.16 ± 9.34 ml/kg/min) showed higher relative peak oxygen uptake compared to sport beginners (48.90 ± 6.54 ml/kg/min), active children (45.46 ± 7.50 ml/kg/min) and sedentary children (44.63 ± 9.52 ml/kg/min). The results suggest that prepubescent children that participate in systematized trained programs have better physiological indicators for aerobic fitness.Key words. aerobic power, physical activity, children.Resumen. El propósito del estudio fue comparar la potencia aeróbica de niños prepubescentes (Estadio de Tanner 1). Participaron 95 niños y niñas con edades entre 7 y 9 años, divididos en 4 grupos basados en sus niveles de actividad física: a) Entrenados (n = 24), b) Principiantes en deportes (n = 23), c) Activos (n = 24), y d) Sedentarios (n = 24). Los niveles de actividad física se determinaron por medio de un diario de actividad física de tres días. Los participantes realizaron el protocolo de Balke en banda sin fin para obtener el consumo de oxígeno pico. Se hicieron comparaciones con ANOVA de dos vías y post hoc de Tukey cuando se encontraron diferencias significativas a un p < 0.05. Los niños prepubescentes entrenados, principiantes en deportes y activos presentaron niveles de actividad física similares, pero fueron significativamente diferentes de los niños sedentarios (p < 0.05). En general, los niños presentaron mayor consumo de oxígeno pico (50.67 ± 8.52 ml/kg/min) que las niñas (45.19 ± 6.44 ml/kg/min). La interacción de sexo por grupo mostró que esta diferencia se explica por el mayor valor de los niños entrenados (58.80 ± 8.98 ml/kg/min) cuando se les comparó con las niñas entrenadas (47.51 ± 5.68 ml/kg/min), aunque tuvieran el mismo nivel de actividad física. El grupo entrenado (53.16 ± 9.34 ml/kg/min) presentó mayores valores de consumo de oxígeno pico comparados con los principiantes (48.90 ± 6.54 ml/kg/min), niños activos (45.46 ± 7.50 ml/kg/min) y niños sedentarios (44.63 ± 9.52 ml/kg/min). Los resultados sugieren que los niños prepubescentes que participan en programas de entrenamiento sistemáticos tienen mejores indicadores fisiológicos de capacidad aeróbica.Palabras claves. potencia aeróbica, actividad física, niños

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