Carnosine is a performance-enhancing food supplement with a potential to modulate muscle energy metabolism and toxic metabolites disposal. In this study we explored interrelations between carnosine supplementation (2 g/day, 12 weeks) induced effects on carnosine muscle loading and parallel changes in (i) muscle energy metabolism, (ii) serum albumin glycation and (iii) reactive carbonyl species sequestering in twelve (M/F=10/2) sedentary, overweight-to-obese (BMI: 30.0+/-2.7 kg/m2) adults (40.1+/-6.2 years). Muscle carnosine concentration (Proton Magnetic Resonance Spectroscopy; 1H-MRS), dynamics of muscle energy metabolism (Phosphorus Magnetic Resonance Spectroscopy; 31P-MRS), body composition (Magnetic Resonance Imaging; MRI), resting energy expenditure (indirect calorimetry), glucose tolerance (oGTT), habitual physical activity (accelerometers), serum carnosine and carnosinase-1 content/activity (ELISA), albumin glycation, urinary carnosine and carnosine-propanal concentration (mass spectrometry) were measured. Supplementation-induced increase in muscle carnosine was paralleled by improved dynamics of muscle post-exercise phosphocreatine recovery, decreased serum albumin glycation and enhanced urinary carnosine-propanal excretion (all p<0.05). Magnitude of supplementation-induced muscle carnosine accumulation was higher in individuals with lower baseline muscle carnosine, who had lower BMI, higher physical activity level, lower resting intramuscular pH, but similar muscle mass and dietary protein preference. Level of supplementation-induced increase in muscle carnosine correlated with reduction of protein glycation, increase in reactive carbonyl species sequestering, and acceleration of muscle post-exercise phosphocreatine recovery.
- MeSH
- dospělí MeSH
- fosfokreatin metabolismus MeSH
- karnosin * metabolismus farmakologie MeSH
- kosterní svaly metabolismus MeSH
- lidé MeSH
- Maillardova reakce MeSH
- potravní doplňky MeSH
- Check Tag
- dospělí MeSH
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
Parkinsonova choroba (PCh) je druhé najčastejšie neurodegeneratívne ochorenie charakterizované progresívne sa zhoršujúcimi motorickými ako aj nemotorickými príznakmi, ku ktorým patria pokles kognitívnych schopností, poruchy nálady a spánku či gastrointestinálne prejavy. Fyzická inaktivita predstavuje modifikovateľný rizikový faktor vzniku PCh a klinické intervenčné štúdie jednoznačne poukazujú na benefičné účinky vytrvalostného aj silového tréningu u pacientov s PCh. Fyzický tréning 1. prispieva k zlepšeniu motorických funkcií, rovnováhy a funkčnej kapacity kostrového svalstva, čím sa redukuje riziko pádov; 2. zvyšuje fyzickú zdatnosť a celkovú funkčnú kapacitu pacienta; 3. upravuje energetický metabolizmus, a znižuje tak riziko vzniku diabetu 2. typu, ktorý významne prispieva k progresii PCh. V neposlednom rade pravidelná dostatočne intenzívna pohybová aktivita zvyšuje kvalitu života prostredníctvom zlepšovania motorických aj nemotorických prejavov ochorenia a celkovo môže prispievať k spomaleniu jeho progresie. Pravidelná fyzická aktivita a cvičenie, optimálne na podklade individualizovanej preskripcie a pod dohľadom skúseného lekára alebo fyzioterapeuta, sú jednoznačne odporúčanou súčasťou komplexného manažmentu pacienta s Pch.
Parkinson‘s disease (PD) is the second most prevalent neurodegenerative disease. It is characterized by the progressive deterioration of motor as well as non-motor symptoms, including cognitive dysfunction, disorders of mood and sleep and gastrointenstinal symptoms. Physical activity is a modifiable well-established risk factor for PD and clinical intervention studies with regular exercise undoubtedly point to the beneficial effects of aerobic as well as strength exercise training in patients with PD. Physical training improves 1. motor state, balance and functional capacity of skeletal muscles, thus reducing the risk of falls; 2. physical fitness and general functional capacity of the patient; and 3. energy metabolism, reducing the risk of type 2 diabetes, which often accelerates progression of PD. Moreover, physical activity and physical training improve quality of life by ameliorating both motor and non-motor symptoms, thus slowing down disease progression. Regular physical activity and exercise, based on individualized prescription and performed under the supervision of an experienced physician or exercise physiologist, are recommended as an integral part in the management of a patient with PD.
- MeSH
- cvičení MeSH
- klinická studie jako téma MeSH
- lidé MeSH
- Parkinsonova nemoc * etiologie rehabilitace MeSH
- pohybová aktivita MeSH
- terapie cvičením MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- přehledy MeSH
