caa a22 4500 469054557 CHVBK 20180323132839.0 cr unu---uuuuu 170328e19920701xx s 000 0 eng 10.1007/BF00868131 doi (NATIONALLICENCE)springer-10.1007/BF00868131 Transient and steady-state cardiopulmonary responses to combined rhythmic and isometric exercise [Elektronische Daten] [David McCoy, Ronald Wiley, Randal Claytor, Charles Dunn] Summary: The transient and steady-state cardiopulmonary responses to combined rhythmic (R) and isometric (I) exercise were examined in nine subjects. Isometric exercise at 30% maximal voluntary contraction (MVC) was started 1.5 min prior to either a 50% or 75% maximal oxygen uptake ( $$\dot VO_{2 max} $$ ) cycle ride and continued for 1.5 min into the 10-min R. Systolic (P as) and diastolic (P ad) blood pressure, heart rate (f c), inspired ventilation volumes ( $$\dot V_1 $$ ), and oxygen uptake ( $$\dot VO_2 $$ ) were recorded every 30 s throughout each experiment. Responses to I effort alone were recorded for comparison with experiments in which the combined exercises were performed during the first 1.5 min when R had not yet begun.P as responses in the first 1.5 min of I (no R) showed the typical rapid linear increase. Addition of the R effort further increasedP as to levels which remained nearly constant (steady state) throughout R. R alone produced a slowerP as increase to approximately the same steady-state levels as those of the combined R and I exercise. ForP ad, the linear increase which occurred during the first 1.5 min of I was attenuated with the superimposition of R. Following cessation of I,P ad fell rapidly during continued R to levels not different from experiments with R alone. Thef c during I alone increased slightly. As I continued, the onset of the R induced a further rapid increase inf c to levels not different from R alone. The $$\dot V_1 $$ showed a similar response to ϕc. $$\dot VO_2 $$ during I alone did not change significantly. These results suggest that a 30% MVC started 1.5 min prior to and ending 1.5 min into a R effort may enable steady-stateP as andf c for a 50% $$\dot VO_{2 max} $$ effort to be reached more rapidly than in response to R alone. Springer-Verlag, 1992 Transient nationallicence Steady state nationallicence Maximum voluntary contraction nationallicence Rhythmic nationallicence Isometric nationallicence McCoy David Department of Zoology, Miami University, 45056, Oxford, OH, USA aut Wiley Ronald Department of Zoology, Miami University, 45056, Oxford, OH, USA aut Claytor Randal Department of Physical Education, Health and Sports Studies Miami University, 45056, Oxford, OH, USA aut Dunn Charles Department of Mathematics and Statistics, Miami University, 45056, Oxford, OH, USA aut European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/4(1992-07-01), 295-301 0301-5548 65:4<295 1992 65 421 https://doi.org/10.1007/BF00868131 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00868131 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- McCoy David Department of Zoology, Miami University, 45056, Oxford, OH, USA aut NATIONALLICENCE 700 1- Wiley Ronald Department of Zoology, Miami University, 45056, Oxford, OH, USA aut NATIONALLICENCE 700 1- Claytor Randal Department of Physical Education, Health and Sports Studies Miami University, 45056, Oxford, OH, USA aut NATIONALLICENCE 700 1- Dunn Charles Department of Mathematics and Statistics, Miami University, 45056, Oxford, OH, USA aut NATIONALLICENCE 773 0- European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 65/4(1992-07-01), 295-301 0301-5548 65:4<295 1992 65 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer