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.
Sour cream is so much more than just a topping for your baked potato. See how you can use it as a key ingredient in appetizers, breads, sides, and desserts. 7 Ways with Sour Cream. If you've been limiting your use of sour cream to topping a baked potato or a plate of nachos, you're missing out. Its creamy tanginess adds to the flavor and smooth texture of appetizers, breads and desserts. And if you're watching fat and calories, it's available in both reduced-fat and nonfat versions.