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Effects of a 4-week high-intensity interval training on pacing during 5-km running trial BJMBR
Silva,R.; Damasceno,M.; Cruz,R.; Silva-Cavalcante,M.D.; Lima-Silva,A.E.; Bishop,D.J.; Bertuzzi,R..
This study analyzed the influence of a 4-week high-intensity interval training on the pacing strategy adopted by runners during a 5-km running trial. Sixteen male recreational long-distance runners were randomly assigned to a control group (CON, n=8) or a high-intensity interval training group (HIIT, n=8). The HIIT group performed high-intensity interval-training twice per week, while the CON group maintained their regular training program. Before and after the training period, the runners performed an incremental exercise test to exhaustion to measure the onset of blood lactate accumulation, maximal oxygen uptake (VO2max), and peak treadmill speed (PTS). A submaximal constant-speed test to measure the running economy (RE) and a 5-km running trial on an...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rating of perceived exertion; Running economy; Peak treadmill speed; Maximal oxygen uptake.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200612
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Energy system contribution in a maximal incremental test: correlations with pacing and overall performance in a 10-km running trial BJMBR
Damasceno,M.V.; Pasqua,L.A.; Lima-Silva,A.E.; Bertuzzi,R..
This study aimed to verify the association between the contribution of energy systems during an incremental exercise test (IET), pacing, and performance during a 10-km running time trial. Thirteen male recreational runners completed an incremental exercise test on a treadmill to determine the respiratory compensation point (RCP), maximal oxygen uptake ( V ˙ O 2 max), peak treadmill speed (PTS), and energy systems contribution; and a 10-km running time trial (T10-km) to determine endurance performance. The fractions of the aerobic (WAER) and glycolytic (WGLYCOL) contributions were calculated for each stage based on the oxygen uptake and the oxygen energy equivalents derived by blood lactate accumulation, respectively. Total metabolic demand (WTOTAL)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aerobic metabolism; Running; Maximal oxygen uptake; Anaerobic metabolism; Endurance performance.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015001101048
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Stability of relative oxygen pulse curve during repeated maximal cardiopulmonary testing in professional soccer players BJMBR
Perim,R.R.; Signorelli,G.R.; Araújo,C.G.S..
During cardiopulmonary exercise testing (CPET), stroke volume can be indirectly assessed by O2 pulse profile. However, for a valid interpretation, the stability of this variable over time should be known. The objective was to analyze the stability of the O2 pulse curve relative to body mass in elite athletes. VO2, heart rate (HR), and relative O2 pulse were compared at every 10% of the running time in two maximal CPETs, from 2005 to 2010, of 49 soccer players. Maximal values of VO2 (63.4 ± 0.9 vs 63.5 ± 0.9 mL O2•kg-1•min-1), HR (190 ± 1 vs188 ± 1 bpm) and relative O2 pulse (32.9 ± 0.6 vs 32.6 ± 0.6 mL O2•beat-1•kg-1) were similar for the two CPETs (P &gt; 0.05), while the final treadmill velocity increased from 18.5 ± 0.9 to 18.9 ± 1.0 km/h (P <...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Exercise testing; Sport cardiology; Maximal oxygen uptake; Stroke volume; Ramp protocol; Heart rate.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000700014
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