The recent report from the Centers for Disease Control and Prevention (CDC) highlights a significant weight gain among Americans over the past two decades, averaging about 15 lbs. (7 kilograms). Interestingly, despite this increase in weight, the average height of Americans has not seen significant changes during the same period. However, beyond height and weight, the CDC’s National Center for Health Statistics gathers a range of unique data points about Americans, shedding light on lesser-known measurements.
One such measurement is popliteal height, which refers to the height measured from the floor up to the underside of the thigh, just behind the knee. This measurement, conducted during the 1960s surveys, aimed to understand how to design furniture or equipment for optimal comfort based on individuals’ sitting positions. The data from these surveys revealed average popliteal heights for men and women, providing insights into physical dimensions that were once of interest but have since been discontinued.
Elbow rest height, another intriguing measurement from the 1960s surveys, reflects the height above a seat where a person’s elbow rests naturally. This measurement, indicative of ideal armrest height, underscores the attention given to travelers’ comfort during that era.
Biacromial breadth, or shoulder width, measured between the outermost bony points on the shoulders, is an indicator of frame size. It appeared in reports spanning several decades, offering insights into changes in physical dimensions over time and their potential implications.
Elbow breadth, measured perpendicular to the body with the arm bent at a right angle, indicates skeletal mass and frame size. Interestingly, this measurement showed slight increases over the years, highlighting subtle changes in Americans’ physical attributes.
Maximal calf circumference, introduced around the millennium, measures the widest point of the calf and reflects changes in lower limb dimensions. This measurement, although showing minor fluctuations, adds to the comprehensive data on Americans’ physical characteristics.
Lastly, mid-arm circumference, measured at the midpoint of the upper arm, has remained a consistent metric in CDC surveys over the decades. This measurement’s persistence underscores its importance in various medical applications, such as designing blood pressure cuffs.
Overall, these unique measurements from CDC surveys provide a nuanced understanding of Americans’ physical attributes and how they have evolved over time, offering valuable insights beyond the traditional height and weight metrics.