More complicated testing includes measurement of lung volumes; lung, chest wall, and respiratory system compliance (which requires measurement of esophageal pressure); and complete cardiopulmonary exercise testing.
The suggested serving size of sour cream is 1 tbsp. This serving size contains 31 calories, and 27 of those calories are from fat. Sour cream has less than 1 g of carbohydrates and 3 g of fat, which is 5 percent of the recommended amount per day. There are nearly 2 g of saturated fat, which is 9 percent of the amount recommended per day.
The Wendy's Sour Cream and Chive Baked Potato contains only 310 calories and 2.5 grams of fat. This is a high carbohydrate food, however. You'll consume 63 grams of carbs when you indulge in this tater treat. Wendy's Frosties vary in calorie and fat content because they come in several different sizes.