Impairments of postural control, functional performance and strength in morbidly obese patients awaiting bariatric surgery in comparison to healthy individuals.

[Purpose] There is a lack of information evaluating specific markers of performance in patients awaiting bariatric surgery. We aimed to assess the postural control, functional performance, strength and endurance performance for morbidly obese patients awaiting bariatric surgery compared to lean controls. [Subjects and Methods] All parameters were assessed by modified Y-balance test, timed-up-and-go-test, maximum strength testing on resistance exercise equipment and cardio-pulmonary exercise testing on a cycle ergometer in 10 morbidly obese patients awaiting bariatric surgery and 10 age- and sex-matched lean controls. [Results] It was found that significant differences existed for overall modified Y-balance test in morbidly obese patients awaiting bariatric surgery versus lean controls (0.37 ± 0.03 vs. 0.47 ± 0.02 cm.cm), timed-up-and-go-test (9.33 ± 1.23 vs. 7.85 ± 1.73 sec) and several variables of cardio-pulmonary exercise testing. Overall absolute strength expressed in kilogram was similar, yet when relativized to body weight strength differences were notable (0.4 ± 0.17 vs. 0.83 ± 0.32 kg.kg). [Conclusion] The results of this study demonstrate the need for comprehensive functional assessment prior to surgery with an identified demand for subsequent tailored physical training prescription that should begin before surgery.