However , postoperatively the group with shortened fasting had higher values than the group with conventional fasting for lung function tests peak expiratory flow ( @ versus @ ; p = @ ) , forced expiratory volume in the first second ( @ versus @ ; p = @ ) , forced vital capacity ( @ versus @ ; p = @ ) , and for muscle function tests dominant handgrip strength ( @ versus @ ; p = @ ) and non-dominant handgrip strength ( @ versus @ ; p = @ ) .