Effects of elastic band resistance training and nutritional supplementation on physical performance of institutionalised elderly - A randomized controlled trial

Objectives: To evaluate the effects of elastic band resistance training in combination with nutrient supplementation on muscular strength and the ability to perform mobility related activities of daily living in older adults living in retirement care facilities. Design: Randomized controlled trial, with a 6-month intervention period. Setting: A retirement care facility, Vienna, Austria, Participants: One hundred and seventeen older adults (14 males (12%) and 103 females (88%)), aged 65 to 97 years (mean age: 82.8 +/- 6.0), having a mini mental state examination score 23 and no chronic diseases posing a medical contraindication Lo training therapy. intervention: Parficiparas were randomly assigned, but stratified by sex, to one of Lhree infervenLion groups: supervised resistance exercise Lraining (RT), RT in combination with niarienl. supplementation (RTS), or cognitive training group (CT). All inferventions were performed Iwo Limes a week for 6 months. RT was designed to train all major muscle groups using elastic bands. The niarieni supplemenL (rich in proLeins, viLamin D, B2, B12) was distributed every morning, as well as after each RT session. Measurements: A baLlery of motor ability Lesis and functional Lest were performed prior to as well as following 3 months and finally alter 6 months of intervention. These tests included isokinetic torque measurements of the knee extensors and flexors in concentric mode at 60 and 120%s, isometric handgrip strength, senior aimlilting test, chair stand test, maximum walking speed and a 6-minute walking test (6MWT). Results: A repeated-measures ANOVA analysis revealed significant improvements in physical function of lower (p = 0.002) and upper extremities (p = 0.006) for RT andjor RTS in comparison to CT. For isokinetic measurements, 6MVVT, and gait speed time effects (p < 0.05) were detected without any group x time interaction effects. Dropouts showed lower performance in chair stand test (p = 0.012), 6MWT (p = 0.003), and gait speed (p = 0.013) at baseline than that of the finishers of the study. Conclusion: Six months of a low intensity resistance exercise using elastic bands and own body weight is safe and beneficial in improving functional performance of institutionalised older people. Multinutrient supplementation did not offer additional benefits to the effects of RT in improving muscular performance. (C) 2015 Elsevier Inc. All rights reserved.