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Exercise Training Combined with Calanus Oil Supplementation Improves the Central Cardiodynamic Function in Older Women

M. Štěpán, K. Daďová, M. Matouš, E. Krauzová, L. Sontáková, M. Koc, T. Larsen, O. Kuda, V. Štich, L. Rossmeislová, M. Šiklová

. 2021 ; 14 (1) : . [pub] 20211229

Language English Country Switzerland

Document type Journal Article

Persistent link   https://www.medvik.cz/link/bmc22011623

Grant support
16-29182A Ministry of Health of the Czech Republic
PROGRES Q36 Charles University
260531/SVV/2020 Charles University

The aim of this study was to investigate the possible beneficial effects of exercise training (ET) with omega-3/Calanus oil supplementation on cardiorespiratory and adiposity parameters in elderly women. Fifty-five women (BMI: 19-37 kg/m2, 62-80 years old) were recruited and randomly assigned to the 4 month intervention with ET and omega-3 supplementation (Calanus oil, ET-Calanus) or ET and the placebo (sunflower oil; ET-Placebo). The body composition was determined by dual-energy X-ray absorptiometry (DXA), and cardiorespiratory parameters were measured using spiroergometry and PhysioFlow hemodynamic testing. Both interventions resulted in an increased lean mass whereas the fat mass was reduced in the leg and trunk as well as the android and gynoid regions. The content of trunk fat (in percent of the total fat) was lower and the content of the leg fat was higher in the ET-Calanus group compared with the ET-Placebo. Although both interventions resulted in similar improvements in cardiorespiratory fitness (VO2max), it was explained by an increased peripheral oxygen extraction (a-vO2diff) alone in the ET-Placebo group whereas increased values of both a-vO2diff and maximal cardiac output (COmax) were observed in the ET-Calanus group. Changes in COmax were associated with changes in systemic vascular resistance, circulating free fatty acids, and the omega-3 index. In conclusion, Calanus oil supplementation during a 4 month ET intervention in elderly women improved the cardiorespiratory function, which was due to combined central and peripheral cardiodynamic mechanisms.

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