caa a22 4500 467940991 CHVBK 20180406153012.0 cr unu---uuuuu 170328e20060201xx s 000 0 eng 10.1007/s00421-005-0056-x doi (NATIONALLICENCE)springer-10.1007/s00421-005-0056-x Comparison of muscle buffer capacity and repeated-sprint ability of untrained, endurance-trained and team-sport athletes [Elektronische Daten] [Johann Edge, David Bishop, Stephen Hill-Haas, Brian Dawson, Carmel Goodman] We measured the muscle buffer capacity (βm) and repeated-sprint ability (RSA) of young females, who were either team-sport athletes (n=7), endurance trained (n=6) or untrained but physically active (n=8). All subjects performed a graded exercise test to determine $$ {\text{\ifmmode\expandafter\dot\else\expandafter\.\fi{V}O}}_{{{\text{2peak}}}} $$ followed 2days later by a cycle test of RSA (5×6s, every 30s). Resting muscle samples (Vastus lateralis) were taken to determine βm. The team-sport group had a significantly higher βm than either the endurance-trained or the untrained groups (181±27vs. 148±11vs. 122±32μmol H+gdm−1pH−1 respectively; P<0.05). The team-sport group also completed significantly more relative total work (299±27 vs. 263±31 vs. 223±21 Jkg−1, respectively; P<0.05) and absolute total work (18.2±1.6 vs. 14.6±2.4 vs. 13.0±1.9kJ, respectively; P<0.05) than the endurance-trained or untrained groups during the RSA test. The team-sport group also had a greater post-exercise blood lactate concentration, but not blood pH. There was a significant correlation between βm and RSA (r=0.67; P<0.05). Our findings show that young females competing in team sports have a larger βm than either endurance-trained or untrained females. This may be the result of the intermittent, high-intensity activity during training and the match play of team-sport athletes. The team-sport athletes also had a greater RSA than either the endurance-trained or untrained subjects. The greater total work by team-sport athletes was predominantly due to a better performance during the early sprints of the repeated-sprint bout. Springer-Verlag, 2005 High-intensity training nationallicence Lactate accumulation nationallicence H+ regulation nationallicence Edge Johann Team Spart Research Group, School of Human Movement and Exercise Science, The University of Western Australia, Perth, Australia aut Bishop David Team Spart Research Group, School of Human Movement and Exercise Science, The University of Western Australia, Perth, Australia aut Hill-Haas Stephen Team Spart Research Group, School of Human Movement and Exercise Science, The University of Western Australia, Perth, Australia aut Dawson Brian Team Spart Research Group, School of Human Movement and Exercise Science, The University of Western Australia, Perth, Australia aut Goodman Carmel Team Spart Research Group, School of Human Movement and Exercise Science, The University of Western Australia, Perth, Australia aut European Journal of Applied Physiology Springer-Verlag 96/3(2006-02-01), 225-234 1439-6319 96:3<225 2006 96 421 https://doi.org/10.1007/s00421-005-0056-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00421-005-0056-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Edge Johann Team Spart Research Group, School of Human Movement and Exercise Science, The University of Western Australia, Perth, Australia aut NATIONALLICENCE 700 1- Bishop David Team Spart Research Group, School of Human Movement and Exercise Science, The University of Western Australia, Perth, Australia aut NATIONALLICENCE 700 1- Hill-Haas Stephen Team Spart Research Group, School of Human Movement and Exercise Science, The University of Western Australia, Perth, Australia aut NATIONALLICENCE 700 1- Dawson Brian Team Spart Research Group, School of Human Movement and Exercise Science, The University of Western Australia, Perth, Australia aut NATIONALLICENCE 700 1- Goodman Carmel Team Spart Research Group, School of Human Movement and Exercise Science, The University of Western Australia, Perth, Australia aut NATIONALLICENCE 773 0- European Journal of Applied Physiology Springer-Verlag 96/3(2006-02-01), 225-234 1439-6319 96:3<225 2006 96 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer