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It was aimed to compare the transientVO<\/mml:mtext><\/mml:mrow>2<\/mml:mn><\/mml:mrow><\/mml:msub><\/mml:mrow><\/mml:math>kinetics responses and metabolic contributions whilst swimming at different velocities aroundVO<\/mml:mtext><\/mml:mrow>2<\/mml:mn>max<\/mml:mi>\u2061<\/mml:mo><\/mml:mrow><\/mml:msub><\/mml:mrow><\/mml:math>. 12 trained male swimmers performed (i) an incremental protocol to determine the velocity atVO<\/mml:mtext><\/mml:mrow>2<\/mml:mn>max<\/mml:mi>\u2061<\/mml:mo><\/mml:mrow><\/mml:msub><\/mml:mrow><\/mml:math>(v<\/mml:mtext>VO<\/mml:mtext><\/mml:mrow>2<\/mml:mn>max<\/mml:mi>\u2061<\/mml:mo><\/mml:mrow><\/mml:msub><\/mml:math>) and (ii) three square wave exercises from rest to 95, 100, and 105% ofv<\/mml:mtext>VO<\/mml:mtext><\/mml:mrow>2<\/mml:mn>max<\/mml:mi>\u2061<\/mml:mo><\/mml:mrow><\/mml:msub><\/mml:math>.VO<\/mml:mtext><\/mml:mrow>2<\/mml:mn><\/mml:mrow><\/mml:msub><\/mml:mrow><\/mml:math>was directly measured using a telemetric portable gas analyser and its kinetics analysed through a double-exponential model. Metabolic contributions were assessed through the sum of three energy components. No differences were observed in the fast component response (\u03c4<\/mml:mi><\/mml:mrow>1<\/mml:mn><\/mml:mrow><\/mml:msub><\/mml:mrow><\/mml:math>\u201415, 18, and 16 s,A<\/mml:mi><\/mml:mrow>1<\/mml:mn><\/mml:mrow><\/mml:msub><\/mml:mrow><\/mml:math>\u201436, 34, and 37\u2009mL<\/mml:mtext>\u00b7<\/mml:mo>kg<\/mml:mtext><\/mml:mrow>-<\/mml:mo>1<\/mml:mn><\/mml:mrow><\/mml:msup>\u00b7<\/mml:mo>min<\/mml:mi>\u2061<\/mml:mo><\/mml:mrow>-<\/mml:mo>1<\/mml:mn><\/mml:mrow><\/mml:msup><\/mml:math>, and Gain\u201432, 29, and 30\u2009mL<\/mml:mtext>\u00b7<\/mml:mo>min<\/mml:mi>\u2061<\/mml:mo><\/mml:mrow>-<\/mml:mo>1<\/mml:mn><\/mml:mrow><\/mml:msup><\/mml:math>at 95, 100, and 105% of thev<\/mml:mtext>VO<\/mml:mtext><\/mml:mrow>2<\/mml:mn>max<\/mml:mi>\u2061<\/mml:mo><\/mml:mrow><\/mml:msub><\/mml:math>, resp.) but A2 was higher in 95 and 100% compared to 105% intensity (480.76\u2009\u00b1\u2009247.01, 452.18\u2009\u00b1\u2009217.04, and 147.04\u2009\u00b1\u200960.40\u2009mL<\/mml:mtext>\u00b7<\/mml:mo>min<\/mml:mi>\u2061<\/mml:mo><\/mml:mrow>-<\/mml:mo>1<\/mml:mn><\/mml:mrow><\/mml:msup><\/mml:math>, resp.). The aerobic energy contribution increased with the time sustained (83\u2009\u00b1\u20095, 74\u2009\u00b1\u20096, and 59\u2009\u00b1\u20097% for 95, 100, and 105%, resp.). The adjustment of the cardiovascular and\/or pulmonary systems that determineO<\/mml:mtext><\/mml:mrow>2<\/mml:mn><\/mml:mrow><\/mml:msub><\/mml:mrow><\/mml:math>delivery and diffusion to the exercising muscles did not change with changing intensity, with the exception ofVO<\/mml:mtext><\/mml:mrow>2<\/mml:mn><\/mml:mrow><\/mml:msub><\/mml:mrow><\/mml:math>slow component kinetics metabolic profiles.<\/jats:p>","DOI":"10.1155\/2014\/675363","type":"journal-article","created":{"date-parts":[[2014,6,19]],"date-time":"2014-06-19T00:16:44Z","timestamp":1403137004000},"page":"1-9","source":"Crossref","is-referenced-by-count":33,"title":["VO<\/mml:mtext><\/mml:mrow>2<\/mml:mtext><\/mml:mrow><\/mml:msub><\/mml:mrow><\/mml:math>Kinetics and Metabolic Contributions Whilst Swimming at 95, 100, and 105% of the Velocity atVO<\/mml:mtext><\/mml:mrow>2<\/mml:mtext>\u2009max<\/mml:mtext><\/mml:mrow><\/mml:msub><\/mml:mrow><\/mml:math>"],"prefix":"10.1155","volume":"2014","author":[{"given":"Ana 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