Increase of maximal oxygen uptake during incremental cardiopulmonary exercise test in normal subjects wearing far-infrared emitting garments
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Data di Pubblicazione:
2017
Citazione:
Increase of maximal oxygen uptake during incremental cardiopulmonary exercise test in normal subjects wearing far-infrared emitting garments / V. Mantegazza, M. Contini, C. Vignati, P. Agostoni. ((Intervento presentato al 78. convegno Congresso Nazionale della Società Italiana di Cardiologia tenutosi a Roma nel 2017.
Abstract:
Background. Far-infrared emitting garments have biological properties, among which the capability to increase blood perfusion in irradiated tissues.
Design. Aim of the study was to evaluate if far-infrared radiation increases maximal exercise capacity and delays the recourse to anaerobic metabolism in non-athletes healthy subjects.
Methods. With a double-blind, random cross-over protocol, a maximal cardiopulmonary exercise test was performed in 20 volunteers, wearing far-infrared or common sport clothes, identical in texture and color.
Results. Higher oxygen uptake at peak of exercise, longer exercise time and delayed anaerobic threshold were observed with far-infrared vs. placebo garments (peak oxygen uptake 38.0±8.9 vs. 36.2±8.5 ml/kg/min, endurance time 592±85 vs. 570±71 seconds, oxygen uptake at anaerobic threshold 72.8±19.3 vs. 64.4±13.9% of predicted maximal oxygen uptake, respectively; p<0.01). Moreover, in 10 subjects blood lactate concentration was measured every 2 minutes of exercise and at peak: lower values were observed with far-infrared fabrics compared to placebo since the eighth minute of exercise, reaching a significant difference at ten minutes (3.6±0.83 vs. 4.4±0.96 mmol/l; p=0.02; see fig.).
Conclusions. In healthy subjects, exercising with far-infrared outfit is associated with an improvement in exercise performance and a delay in the occurrence of anaerobic metabolism in comparison to common sport clothes. In consideration of non-thermic properties of functionalized clothes, these effects could be mediated by an increase in oxygen peripheral delivery secondary to muscular vasodilation. As a possible clinical application, use of far-emitting garments could be suggested in rehabilitation programs of heart failure patients if similar responses were observed even in this population.
Tipologia IRIS:
14 - Intervento a convegno non pubblicato
Elenco autori:
V. Mantegazza, M. Contini, C. Vignati, P. Agostoni
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