Examples of circumscribed groups whose members may be units of analysis at the individual level include: students, residents, workers, voters, parents, faculty, etc. Each of these units of analysis implies some circumscribed population; i.e., a sub-population. In descriptive studies, the researcher makes observations describing the characteristics of a large number of individual people, such as their sexes, ages, regions or birth, attitudes, etc.
Exertional Sickling. Exertional sickling is a medical emergency occurring in athletes carrying the sickle cell trait. When the red blood cells(RBC) change shape or âsickleâ this causes a build up of RBCs in small blood vessels, leading to decreased blood flow.The drop in blood flow leads to a breakdown of muscle tissue and cell death, known as fulminant rhabdomyolysis.xertional sickling is most common when exercise is high intensity and has short or small amounts of recovery time between drills. Sports settings common for exertional sickling collapse are: 1  Football conditioning. 2  Basketball training. 3  Cross-country racing.
In chronic fatigue syndrome, post-exertional malaise is a period of intense exhaustion and a spike in other symptoms that lasts for more than 24 hours following physical exertion. Some people say they experience it after mental exertion as well. This symptom is a hallmark of the disease.