Final answer:
No specific percentage for a hypersthenic body habitus is provided, but related obesity statistics indicate that 36 percent of adults were obese and 33 percent were overweight in the U.S. in 2010. The waist-to-hip ratio is used to indicate central obesity, which may correlate with a hypersthenic habitus.
Step-by-step explanation:
The percentage of the population with a hypersthenic body habitus, which typically refers to a body type characterized by a broad and thick build, is not widely reported in medical literature or health statistics. The provided information does not specify the exact percentage for a hypersthenic body habitus but offers insight into obesity trends which can be related to body habitus types. According to the U.S. Centers for Disease Control and Prevention, in 2010 nearly 36 percent of adults were obese and an additional 33 percent were overweight. When considering obesity and body habitus, a relevant measure is the waist-to-hip ratio, with a ratio greater than 0.85 for women or 0.90 for men being indicative of central obesity, a condition which holds greater health risks and is often associated with a more hypersthenic body type in regards to fat distribution.