Chronic Effects of a Training Program Using a Nasal Inspiratory Restriction Device on Elite Cyclists González Montesinos, José Luis Orantes González, Eva Heredia Jiménez, José María Respiratory muscle training Cyclists Cardiopulmonary exercise testing This study compared the response of a 9-week cycling training on ventilatory efficiency under two conditions: (i) Combined with respiratory muscle training (RMT) using a new nasal restriction device (FeelBreathe) (FB group) and (ii) without RMT (Control group). Eighteen healthy elite cyclists were randomly separated into the FB group (n = 10) or Control group (n = 8). Gas exchange was measured breath by breath to measure ventilatory efficiency during an incremental test on a cycloergometer before (Pre) and after (Post) the nine weeks of training. The FB group showed higher peak power (D (95%HDI) (0.82 W/kg (0.49, 1.17)), VO2max (5.27 mL/kg/min (0.69, 10.83)) and VT1 (29.3W(1.8, 56.7)) compared to Control at PostFINAL. The FB group showed lower values from Pre to PostPRE in minute ventilation (VE) (-21.0 L/min (-29.7, -11.5)), Breathing frequency (BF) (-5.1 breaths/min (-9.4, -0.9)), carbon dioxide output (VCO2) (-0.5 L/min (-0.7, -0.2)), respiratory equivalents for oxygen (EqO2) (-0.8 L/min (-2.4, 0.8)), heart rate (HR) (-5.9 beats/min (-9.2, -2.5)), respiratory exchange ratio (RER) (-0.1 (-0.1, -0.0) and a higher value in inspiratory time (Tin) (0.05 s (0.00, 0.10)), expiratory time (Tex) (0.11 s (0.05, 0.17)) and end-tidal partial pressure of CO2 (PETCO2) (0.3 mmHg (0.1, 0.6)). In conclusion, RMT using FB seems to be a new and easy alternative ergogenic tool which can be used at the same time as day-to-day training for performance enhancement. 2021-03-12T10:26:08Z 2021-03-12T10:26:08Z 2021-01-18 journal article Gonzalez-Montesinos, J.L.; Fernandez-Santos, J.R.; Vaz-Pardal, C.; Aragon-Martin, R.; Arnedillo-Muñoz, A.; Reina-Novo, J.; Orantes-Gonzalez, E.;Heredia-Jimenez, J.; Ponce-Gonzalez, J.G. Chronic Effects of a Training Program Using a Nasal Inspiratory Restriction Device on Elite Cyclists. Int. J. Environ. Res. Public Health 2021, 18, 777. https://doi.org/10.3390/ ijerph18020777 http://hdl.handle.net/10481/67147 10.3390/ijerph18020777 eng http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España Mdpi