ABSTRACT
Inspiratory muscle training (IMT) is known to promote physiological benefits and improve physical performance in endurance sports activities. However, the metabolic adaptations promoted by different IMT prescribing strategies remain unclear. In this work, a longitudinal, randomized, double-blind, sham-controlled, parallel trial was performed to investigate the effects of 11 weeks (3 days·week-1) of IMT at different exercise intensities on the serum metabolomics profile and its main regulated metabolic pathways. Twenty-eight healthy male recreational cyclists (30.4 ± 6.5 years) were randomized into three groups: sham (6 cm·H2O of inspiratory pressure, n = 7), moderate-intensity (MI group, 60% maximal inspiratory pressure (MIP), n = 11) and high-intensity (HI group, 85-90% MIP, n = 10). Blood serum samples were collected before and after 11 weeks of IMT and analyzed by 1H NMR and UHPLC-HRMS/MS. Data were analyzed using linear mixed models and metabolite set enrichment analysis. The 1H NMR and UHPLC-HRMS/MS techniques resulted in 46 and 200 compounds, respectively. These results showed that ketone body metabolism, fatty acid biosynthesis, and aminoacyl-tRNA biosynthesis were upregulated after IMT, while alpha linolenic acid and linoleic acid metabolism as well as biosynthesis of unsaturated fatty acids were downregulated. The MI group presented higher MIP, Tryptophan, and Valine levels but decreased 2-Hydroxybutyrate levels when compared to the other two studied groups. These results suggest an increase in the oxidative metabolic processes after IMT at different intensities with additional evidence for the upregulation of essential amino acid metabolism in the MI group accompanied by greater improvement in respiratory muscle strength.
Subject(s)
Breathing Exercises , Serum , Humans , Male , Breathing Exercises/methods , Chromatography, High Pressure Liquid , Muscle Strength/physiology , Proton Magnetic Resonance Spectroscopy , Respiratory Muscles , Longitudinal StudiesABSTRACT
Acrodermatitis enteropathica is an uncommon disease caused by hereditary or acquired zinc deficiency. It is characterized by a triad of alopecia, diarrhea and acraland periorificial dermatitis. It is treated with Zinc supplementation. We report a31-year-old indigent and drug addict female with a cutaneous-mucous syndromecharacteristic of acrodermatitis enteropathica. She had a positive clinical evolutionafter Zinc supplementation.
Subject(s)
Adult , Female , Humans , Acrodermatitis/pathology , Dermis/pathology , Zinc/deficiency , Acrodermatitis/diagnosis , Acrodermatitis/drug therapy , Biopsy , Diagnosis, Differential , Zinc/metabolism , Zinc/therapeutic useABSTRACT
Acrodermatitis enteropathica is an uncommon disease caused by hereditary or acquired zinc deficiency. It is characterized by a triad of alopecia, diarrhea and acral and periorificial dermatitis. It is treated with Zinc supplementation. We report a 31-year-old indigent and drug addict female with a cutaneous-mucous syndrome characteristic of acrodermatitis enteropathica. She had a positive clinical evolution after Zinc supplementation.