Definition Of Growth Velocity

Growth velocity based on weight length and head circumference.

Definition of growth velocity. 2 8 inches 7 cm growth year. The growth spurt at puberty is fueled by the secretion of growth hormone and sex steroids. 3 2 inches 8 cm growth year. Age 2 to 3 years.

Growth velocity charts are important to evaluate the growth of a subject and are available for height and weight in both boys and girls. If growth is thought of as a form of motion the height attained at successive ages can be considered the distance travelled and the rate of growth the velocity. The average growth velocity by age 6 falls to 2 or so inches 5 0 5 5 cm per year with minimum sex differences in the growth rate until the onset of puberty. Linear growth velocity provides one of the most important biomarkers of a child s health status and varies according to a variety of inherent and environmental factors including age sex genetics pubertal development nutrition and psychosocial status.

Age 1 to 2 years. Who library cataloguing in publication data who child growth standards. A broader choice of z widens the definition of what is considered normal for growth velocity purposes which can vary from source to source. The velocity or rate of growth reflects the child s state at any particular time better than does the height attained which depends largely on how much the child has grown in all.

Clinicians assess the growth of preterm infants and compare growth velocity using a variety of methods. 2 0 2 4 inches 5 6 cm. Age 3 to 4 years. 4 0 inches 10 cm range 10 14 cm growth year.

10 0 inches 25 cm range 23 27cm growth year. 16 to 17 cm growth year. We determined the numerical methods used to describe weight length and head circumference growth velocity in preterm infants. Age 4 to 10 years.

Height or weight velocity is a variable derived from the. Where hv is height velocity m is the median average l is a quality called skewness s is variability and z is the chosen standard deviation from the mean. The velocity of money is the rate at which money is exchanged from one transaction to another and how much a unit of currency is used in a given period of time. Growth velocity charts are useful for the assessment of growth in healthy children from birth to adulthood.

It is important to use growth velocity charts for the follow up of children with chronic illness celiac disease inflammatory diseases tumours etc to ensure that growth is maintained. These methods include grams kilogram day g kg d grams day g d centimeters week cm week and change in z scores.