Question

1.) Compared to skinfold measurements, BIA is usually preferable when measuring the body composition of athletes.

True or False

2.) The physical activity guidelines for US adults include muscle strengthening activities.  

True or False

3.) Prediction equations programmed into BIA analyzers assume that there are multiple conducting pathways through the body.

True or False

4.) Flexibility is a general characteristic (i.e., individuals with good shoulder flexibility typically have good hip, knee, and elbow flexibility); thus, measuring one to three joint motions provides a good indication of overall body flexibility.  

True or False

Answer 1

1. BIA is bioimpedance analysis. National Institutes of Health Technology Assessment Conference Stated that BIA in body composition measurement is more accurate than BMI and may be more accurate than skinfolds measurements for the estimation of comparative fat mass.

So the statement is true.

2. The Department of Health and Human Services issued the federal government's first-ever Physical Activity Guidelines for Americans in 2008. This intended to help americans understand the types and amounts of physical activity that offer important health benefits. Physical activity is defined as any form of exercise or movement of the body that uses energy.

The guide line states that Adults should do muscle-strengthening activities of moderate or greater intensity and that involve all major muscle groups on 2 or more days a week, as these activities provide additional health benefits.

So the statement is true.

3. Bioelectrical impedance analysis (BIA) is a method for measuring body composition based on the rate at which an electrical current travels through the body. Body fat that is the adipose tissue  causes greater impedance means resisitance  than fat-free mass and slows the rate at which the current travels. thus body fat percent is scaled.

Different types of BIA devices are used, all of them requires two points of contact. On a handheld device the two points are the two hands it is called hand-hand BIA. Commonly used BIA scale, the two points of contact are the two feet it is called foot-foot bioelectrical impedance analysis. There are also hand-to-foot BIA devices, as well.

So the atement goes true

4. Flexibility is defined as " a health-related component of physical fitness that relates to the range of motion available at a joint." This id the defenition according to the U.S. Surgeon General's report on physical activity and health.

This means that each joint and each group of muscles in the body might have a different range of motion (ROM) or a different level of flexibility. Some areas of the body may be very tight, meaning that the muscles feel short and restricted, where as some areas of the body may feel very loose and may be able to lengthen and move those muscles freely.​

So the statement is false.