caa a22 4500 467940541 CHVBK 20180406153011.0 cr unu---uuuuu 170328e20060101xx s 000 0 eng 10.1007/s00421-005-0068-6 doi (NATIONALLICENCE)springer-10.1007/s00421-005-0068-6 The effects of training intensity on muscle buffer capacity in females [Elektronische Daten] [Johann Edge, David Bishop, Carmel Goodman] We examined changes in muscle buffer capacity (βmin vitro), $$ \ifmmode\expandafter\dot\else\expandafter\.\fi{V}{\text{O}}_{{{\text{2peak}}}} $$ and the lactate threshold (LT) after 5weeks of high-intensity interval training (INT) above the LT or moderate-intensity continuous training (CON) just below the LT. Prior to and immediately after training, 16 female subjects performed a graded exercise test to determine $$ \ifmmode\expandafter\dot\else\expandafter\.\fi{V}{\text{O}}_{{{\text{2peak}}}} $$ and the LT, followed 2days later by a resting muscle biopsy from the vastus lateralis muscle to determine βmin vitro. Following baseline testing, the subjects were randomly placed into the INT (n=8) or CON training group (n=8). Subjects then performed 5weeks of cycle training (3days per week), performing either high-intensity INT (6-10×2min at 120-140% LT with 1min rest) or moderate-intensity CON (80-95% LT) training. Total training volume was matched between the two groups. After the training period, both groups had significant improvements in $$ \ifmmode\expandafter\dot\else\expandafter\.\fi{V}{\text{O}}_{{{\text{2peak}}}} $$ (12-14%; P<0.05) and the LT (7-10%; P<0.05), with no significant differences between groups. The INT group, however, had significantly greater improvements in βmin vitro (25%; 123±5-153±7μmol H+·g muscle dm−1·pH−1; P<0.05) than the CON group (2%; 130±12-133±7μmol H+·g muscle dm−1·pH−1, P>0.05). Our results show that when matched for training volume, high-intensity interval training above the LT results in similar improvements in $$ \ifmmode\expandafter\dot\else\expandafter\.\fi{V}{\text{O}}_{{{\text{2peak}}}} $$ and the LT, but greater improvements in βmin vitro than moderate-intensity continuous training below the LT. This suggests that training intensity is an important determinant of changes to βmin vitro. Springer-Verlag, 2005 Lactate threshold nationallicence Interval training nationallicence Training volume nationallicence High intensity nationallicence Edge Johann Team Sport Research Group, School of Human Movement and Exercise Science, The University of Western Australia, 35 Stirling Highway, 6009, Crawley, WA, Australia aut Bishop David Team Sport Research Group, School of Human Movement and Exercise Science, The University of Western Australia, 35 Stirling Highway, 6009, Crawley, WA, Australia aut Goodman Carmel Team Sport Research Group, School of Human Movement and Exercise Science, The University of Western Australia, 35 Stirling Highway, 6009, Crawley, WA, Australia aut European Journal of Applied Physiology Springer-Verlag 96/1(2006-01-01), 97-105 1439-6319 96:1<97 2006 96 421 https://doi.org/10.1007/s00421-005-0068-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00421-005-0068-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Edge Johann Team Sport Research Group, School of Human Movement and Exercise Science, The University of Western Australia, 35 Stirling Highway, 6009, Crawley, WA, Australia aut NATIONALLICENCE 700 1- Bishop David Team Sport Research Group, School of Human Movement and Exercise Science, The University of Western Australia, 35 Stirling Highway, 6009, Crawley, WA, Australia aut NATIONALLICENCE 700 1- Goodman Carmel Team Sport Research Group, School of Human Movement and Exercise Science, The University of Western Australia, 35 Stirling Highway, 6009, Crawley, WA, Australia aut NATIONALLICENCE 773 0- European Journal of Applied Physiology Springer-Verlag 96/1(2006-01-01), 97-105 1439-6319 96:1<97 2006 96 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer