Current levels of fitness.
D000293:Adolescent; D000328:Adult; D001741:Black or African American; D000368:Aged; D001110:Arctic Regions; D044383:Black People; D002170:Canada; D002648:Child; D005007:Ethnology; D006306:Health Surveys; D006801:Humans; D007198:Indians, North American; D004930:Inuit; D008297:Male; D008875:Middle Aged; D009664:Norway; D010101:Oxygen Consumption; D010809:Physical Fitness / Q000145:classification*; D013019:South Africa; D013177:Sports; D013548:Sweden; D014481:United States; D044465:White People