Back Extension:

Backward bending of the spine.

Back Flexion:

Forward bending of the spine.

Bariatric surgery:

Surgery on the stomach and/or intestines to help the patient with extreme obesity lose weight. Bariatric surgery is a last-resort weight-loss method used for people who have a body mass index (BMI) in excess of 40.

Basal energy expenditure (BEE):

Also known as the basal metabolic rate.; The number of calories that your body needs for basic processes such as digestion, breathing, brain function, etc.

Bioelectrical impedance analysis (BIA):

A way to estimate the amount of body weight that is fat and nonfat. Nonfat weight comes from bone, muscle, body water, organs, and other body tissues. BIA works by measuring how difficult it is for a harmless electrical current to move through the body. The more fat a person has, the harder it is for electricity to flow through the body. The less fat a person has, the easier it is for electricity to flow through the body. By measuring the flow of electricity, one can estimate body fat percent.

Body composition score (BCS):

A measure that combines body weight, percentage of body fat, waist circumference and hip circumference into one score. The BCS is a more accurate measure of weight loss progress than simply measuring body weight.

Body mass index (BMI):

A measure of body weight relative to height. BMI can be used to determine if people are at a healthy weight, overweight, or obese. A body mass index (BMI) of 18.5 up to 25 refers to a healthy weight, a BMI of 25 up to 30 refers to overweight and a BMI of 30 or higher refers to obese.

Bodywork:

A general term that relates to a wide variety of hands-on therapies, such as massage and some movement therapies.

Bulging Disc:

The annulus portion of the lumbar disc weakens causing the nucleus to press against it resulting in the annulus pinching or pressing against a nerve causing pain.

Bursitis:

A condition in which the bursa, or fluid filled sacks that cushion joints, become swollen.

Reference: B