Barkova 2023 MiP203

Barkova 2023 MiP203

Effects of short term and long term aerobic-strength training on muscle metabolism in the elderly.

Link: MiP2023 Obergurgl AT

Barkova Daria (2023)

Event: MiP2023 Obergurgl AT

Authors: Barkova Daria, Ukropec Jozef, Nemec Michal, Slobodova L, Schoen M, Tirpakova V, Krumpolec P, Sumbalova Zuzana, Vician M, Sedliak M, Ukropcova Barbara

Introduction: Regular exercise supports healthy ageing and reduces risk of elderly chronic diseases. Respirometry is an important tool in understanding the physiological adaptations in response to physical activity at cellular level. Previously, we showed that 3-month exercise training increases muscle metabolism in the elderly. Present study is aimed to assess the effects of long-term training on muscle oxidative capacity in the subset of individuals continuing regular training for 5 years.
Methods: Volunteers (n=60, 66.9±1.2 years, 27.1±3.9 kg/m2) were recruited for 3-month intervention study: 36 of them underwent aerobic-strength training, 24 volunteers were active controls. A volunteer subpopulation continued aerobic-strength training for next 5 years (n=15), and is compared to non-exercising controls (n=15). Body composition, glucose tolerance, insulin sensitivity and other metabolic parameters were assessed. Samples of m. vastus lateralis obtained by biopsy were used for measurement of muscle mitochondria oxygen consumption by O2k high-resolution respirometry, applying RP1 SUIT protocol.
Results and discussion: Three-month exercise training enhanced muscle mitochondrial respiration rate in the elderly undergoing exercise training compared to controls. So far, two individuals completed follow up phenotyping after 5 years training. A slight deterioration in anthropometric (increased BMI by ~ 8 % and visceral fat content by ~ 36%) and metabolic parameters was observed, together with a reduction in muscle mitochondrial respiration (by ~ 15 %).
Short-term training improved the whole-body and muscle metabolism in the elderly. Obtaining data from exercising and non-exercising cohorts (currently ongoing) will allow us to assess the impact of a long-term intervention.

• Keywords: exercise, physical activity, respiration, training, elderly metabolism

Affiliations and acknowledgements

Barkova D¹, Ukropec J¹, Nemec M¹, Slobodová L¹, Schön M¹, Tirpáková V², Krumpolec P¹, Sumbalová Z^4,5, Vician M⁷, Sedliak M⁶, Ukropcova B^1,2

Biomedical Research Center Slovak Academy of Sciences, Slovakia
Institute of Physical Education, Slovak Health University, Bratislava, Slovakia
Institute of Pathological Physiology & 4 Pharmacobiochemical Laboratory, Faculty of Medicine Comenius University, Bratislava, Slovakia
Daniel Swarovski Research Laboratory, Dept. of Visceral, Transplant and Thoracic Surgery, Medical University of Innsbruck, Austria
Faculty of Physical Education and Sports, Comenius University, Bratislava, Slovakia
Deptartment of Surgery, Slovak Medical University, Bratislava, Slovakia

Corresponding author: [email protected]

Funding: Grant support: APVV 20-0466, VEGA 2/0076/22

Labels: MiParea: Exercise physiology;nutrition;life style

Organism: Human Tissue;cell: Skeletal muscle

Event: Poster