Changes in Ventilatory Response to Exercise in Trained Athletes: Respiratory Physiological Benefits Beyond Cardiovascular Performance.

The beneficial impact of an 8-month competitive season on the ventilatory profile response to exercise in soccer players has never been evaluated. Ventilatory profile (evaluated by determining individual tidal volume [VT] relative to minute ventilation [VE] inflection points during exercise) and metabolic responses to incremental exercise were evaluated in 2 professional soccer teams before and after an 8-month competitive season. No differences between teams in anthropometric characteristics or in resting cardiopulmonary variables, included oxygen uptake (VO2) and heart rate (HR), before and during the competitive season were found. At iso-speed, there were overall improvements in carbon dioxide output (VCO2), VE/VO2, VE/VCO2, VE and respiratory frequency (fR) during the season. The VT/VE inflection points 1 and 2 occurred with greater exercise time, HR, VO2, VCO2, VE and VT during the competitive season. Despite very high baseline performance and a negligible improvement in VO2, an 8-month competitive season improved ventilatory profile response to exercise in elite athletes.

di Paco A ，Dubé BP ，Laveneziana P 《-》

Ventilatory efficiency and breathing pattern in world-class cyclists: A three-year observational study.

The purpose of this three-year observational study was to analyze the ventilatory efficiency and breathing pattern in world-class professional cyclists. Twelve athletes (22.61±3.8years; 177.38±5.5cm; 68.96±5.5kg and VO2max 75.51±3.3mLkg(-1)min(-1)) were analyzed retrospectively. For each subject, respiratory and performance variables were recorded during incremental spiroergometry: oxygen uptake (VO2), carbon dioxide output (VCO2), pulmonary ventilation (VE), tidal volume (Vt), breathing frequency (fR), driving (Vt/Ti), timing (Ti/Ttot), peak power output (PPO) and maximum oxygen uptake (VO2max). Ventilatory efficiency (VE/VCO2 slope) was calculated from the beginning of exercise testing to the second ventilatory threshold (VT2). The VE/VCO2 slope was unaffected during the study period (24.63±3.07; 23.61±2:79; 24:89±2:61) with a low effect size (ES=0.04). The PPO improved significantly in the third year (365±33.74; 386.36±32.33; 415.00±24.15) (p<0.05). The breathing pattern variables, Vt/Ti and Ti/Ttot, did not change significantly over the three year period (ES=0.00; ES=0.03 respectively). These findings suggest that changes in cycling performance in world-class professional cyclists do not modify breathing variables related to the control of ventilatory efficiency.

Salazar-Martínez E ，Terrados N ，Burtscher M ，Santalla A ，Naranjo Orellana J ... -  《-》

[Cardiopulmonary exercise capacity in adult patients with atrial septal defect].

Suchoń E ，Podolec P ，Tomkiewicz-Pajak L ，Kostkiewicz M ，Mura A ，Pasowicz M ，Tracz W ... -  《-》

Breathing pattern in highly competitive cyclists during incremental exercise.

Lucía A ，Carvajal A ，Calderón FJ ，Alfonso A ，Chicharro JL ... -  《-》

Effects of detraining on breathing pattern and ventilatory efficiency in young soccer players.

Alvero-Cruz JR ，Ronconi M ，Garcia Romero J ，Naranjo Orellana J ... -  《-》