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.
One hundred grams of fat-free vanilla ice cream contains 138 calories, but 100 grams of soft-serve vanilla frozen yogurt with fat in it contains 159 calories. Frozen yogurt and ice cream are made in a variety of flavors.