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  • Title: Whole-body electromyostimulation to fight sarcopenic obesity in community-dwelling older women at risk. Resultsof the randomized controlled FORMOsA-sarcopenic obesity study.
    Author: Kemmler W, Teschler M, Weissenfels A, Bebenek M, von Stengel S, Kohl M, Freiberger E, Goisser S, Jakob F, Sieber C, Engelke K.
    Journal: Osteoporos Int; 2016 Nov; 27(11):3261-3270. PubMed ID: 27289534.
    Abstract:
    UNLABELLED: The effect of whole body-electromyostimulation in community-dwelling women ≥70 with sarcopenic obesity was heterogeneous, with high effects on muscle mass, moderate effects on functional parameters, and minor effects on fat mass. Further, we failed to determine a supportive effect of additional protein-enriched dietary supplementation in this albeit predominately well-nourished group. INTRODUCTION: The aim of the study was to determine the effect of whole-body electromyostimulation (WB-EMS) on sarcopenic obesity (SO) in community-dwelling women more than 70 years with sarcopenic obesity. METHODS: Seventy-five community-dwelling women ≥70 years with SO were randomly allocated to either a WB-EMS-application with (WB-EMS &P; 24.9 ± 1.9 kg/m2) or without (WB-EMS; 25.2 ± 1.8 kg/m2) dietary supplementation (150 kcal/day, 56 % protein) or a non-training control group (CG; 24.7 ± 1.4 kg/m2). WB-EMS consisted of one weekly session of 20 min (85 Hz, 350 μs, 4 s of strain-4 s of rest) performed with moderate to high intensity. Primary study endpoint was the Sarcopenia Z-Score constituted by skeletal muscle mass index (SMI, as assessed by dual energy X-ray absorptiometry), grip strength, and gait speed, and secondary study endpoint was body fat (%). RESULTS: Sarcopenia Z-score comparably increases in the WB-EMS and the WB-EMS&P-group (p ≤ .046). Both groups differ significantly (p ≤ .001) from the CG which deteriorated significantly (p = .006). Although body fat changes were most pronounced in the WB-EMS (-0.9 ± 2.1; p = .125) and WB-EMS&P (-1.4 ± 2.5; p = .028), reductions did not statistically differ (p = .746) from the CG (-0.8 ± 2.7; p = .179). Looking behind the covariates, the most prominent changes were determined for SMI, with a significant increase in both EMS-groups (2.0-2.5 %; p ≤ .003) and a decrease in the CG (-1.2 ± 3.1 %; p = .050) with significant between-group differences (p = .001). CONCLUSION: WB-EMS is a safe and attractive method for increasing muscle mass and functional capacity in this cohort of women 70+ with SO; however, the effect on body fat is minor. Protein-enriched supplements did not increase effects of WB-EMS alone.
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