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Showing results for: "fourth" (4 results)

The Fourth Dimension of Human Speed
Health & Medicine

The Fourth Dimension of Human Speed

We have all witnessed the physiological "decoupling" that occurs late in a race, where at mile 20 of a marathon, a pace that felt like a metabolic steady-state two hours ago suddenly demands an all-out effort.

HIV Testing: Types, Window Periods and Results Explained
Health & Medicine

HIV Testing: Types, Window Periods and Results Explained

HIV testing is the process of determining whether a person has been infected with human immunodeficiency virus. Depending on the test, HIV testing can detect antibodies produced by the immune system, the HIV p24 antigen, or HIV RNA. Different tests have different detection window periods, and a reactive screening result requires appropriate follow-up testing before an HIV diagnosis is established.