Effort may refer to:
Effort, Pennsylvania, a census-designated place in Monroe County, Pennsylvania, United States
Effortfulness, the subjective experience of exertion when performing an activity
Hypoventilation (also known as respiratory depression) occurs when ventilation is inadequate (hypo meaning “below”) to perform needed gas exchange. By definition it causes an increased concentration of carbon dioxide (hypercapnia) and respiratory acidosis. Hypoventilation is not synonymous with respiratory arrest, in which breathing ceases entirely and death occurs within minutes due to hypoxia and leads rapidly into complete anoxia, although both are medical emergencies. Hypoventilation can be considered a precursor to hypoxia and its lethality is attributed to hypoxia with carbon dioxide toxicity.
In politics and military planning, a war effort refers to a coordinated mobilization of society’s resources—both industrial and human—towards the support of a military force. Depending on the militarization of the culture, the relative size of the armed forces and the society supporting them, the style of government, and the popular support for the military objectives, such war effort can range from a small industry to complete command of society.
Although many societies were retroactively perceived to be engaged in a war effort, the concept was not generally used until the last decade of the 18th century, when the leaders of the French Revolution called for the levée en masse and a general mobilization of society to prevent monarchist forces from reclaiming control of the French government.
The concept was subsequently adapted and used by Russia, the United Kingdom, and the United States, especially during World War I and World War II. The term war effort was coined in conjunction with these efforts.