Search results
Results from the WOW.Com Content Network
A better estimate is provided by the total area of the cross-sections perpendicular to the muscle fibers (green lines in figure 1). This measure is known as the physiological cross-sectional area (PCSA), and is commonly calculated and defined by the following formula, developed in 1975 by Alexander and Vernon: [4] [5] [6]
Variable pennation angle also influences whole-muscle geometry during contraction. The degree of fiber rotation determines the cross-sectional area during the course of the movement which can result in increases of the thickness or width of the muscle. [12] Pennation angle can be modified through exercise interventions. [13]
A standardised measuring tape is used to ascertain the mid-upper arm circumference of a child. The anthropometric measures of the upper arm are divided into principal measures, which are measured directly, and derived measures, which are derived from the principal measures using specific formulae and empirically-derived corrections.
Measurements are made with a carpenters tape from the frame to the edge of the trunk and the profile of the trunk shape is plotted. The data is then entered into a trapezoidal area function in a spreadsheet and converted into cross sectional area so as to calculate the equivalent circumference to use in the volume formula. [citation needed]
A is the cross-sectional area of the tape; square centimeters; E is the modulus of elasticity of the tape material; newtons per square centimeter; The correction C p {\displaystyle C_{p}} is added to L {\displaystyle L} to obtain the corrected distance:
Image of a helium-4 nucleus; 4 He has a very small cross-section, less than 0.01 barn.. During Manhattan Project research on the atomic bomb during World War II, American physicists Marshall Holloway and Charles P. Baker were working at Purdue University on a project using a particle accelerator to measure the cross sections of certain nuclear reactions.
A is the cross-sectional area of the flow, P is the wetted perimeter of the cross-section. More intuitively, the hydraulic diameter can be understood as a function of the hydraulic radius R H, which is defined as the cross-sectional area of the channel divided by the wetted perimeter. Here, the wetted perimeter includes all surfaces acted upon ...
Elastic therapeutic tape used for lower back pain on an older male. The product is a type of thin, elastic cotton tape that can stretch up to 140% of its original length. [12] As a result, if the tape is applied stretched greater than its normal length, it will "recoil" after being applied and therefore create a pulling force on the skin.