%0 Journal Article
%T Nutritional Factors Related to Muscle Weakness 1 Year after Total Hip Arthroplasty: A Case-Control Study.
%A Ikeda T
%A Sato R
%A Ninomiya K
%A Suzuki K
%A Hirakawa K
%A Jinno T
%J Ann Nutr Metab
%V 0
%N 0
%D Dec 2021 2
%M 34856554
%F 5.923
%R 10.1159/000520551
%X <B>OBJECTIVE: </B>Prolonged muscle weakness after total hip arthroplasty (THA) remains a problem. Despite increasing physical activity up to 3 years after surgery, muscle strength was decreased to 80-90% of the healthy side 2 years after THA. The objective of the present study was to identify the nutritional factors related to muscle weakness 1 year after THA.<BR><B>METHODS: </B>Persons who underwent THA were divided into 2 groups according to the cutoff point of knee extensor strength that represents functional limitation: a normal-strength group of 71 persons and a muscle weakness group of 91 persons. The investigators assessed lower limb isometric strength, the 10-m timed gait test, and daily intakes of energy and nutrients from preoperative to 1 year after THA. The differences in nutrient intakes between the 2 groups (normal-strength group and muscle weakness group) were examined by multiple logistic regression analysis.<BR><B>RESULTS: </B>There was a significant difference between the groups in energy intake. Daily protein intake was related to knee extension strength gain above the cutoff point 1 year after THA.<BR><B>CONCLUSIONS: </B>The present study suggested that to prevent prolonged muscle weakness after THA, a sufficient protein intake as well as an exercise intervention may be needed even half a year or after.