TY  - JOUR
AU  - Savin, William M.
A2  - Savin, William M.
A2  - Davidson, Dennis M.
A2  - Haskell, William L.
DB  - BISp
DP  - BISp
KW  - Atropin
KW  - Belastung, körperliche
KW  - Belastungsherzfrequenz
KW  - Betarezeptorenblockade
KW  - Erholungsherzfrequenz
KW  - Herz-Kreislauf-System
KW  - Herzfrequenz
KW  - Herzminutenvolumen
KW  - Korrelationskoeffizient
KW  - Laufbandbelastung
KW  - Leistungsphysiologie
KW  - Nervensystem
KW  - Nervensystem, vegetatives
KW  - Propranolol
KW  - Sportmedizin
LA  - eng
TI  - Autonomic contribution to heart rate recovery from exercise in humans
TT  - Beitrag des vegetativen Nervensystems zur Erholung der Herzfrequenz von koerperlicher Belastung beim Menschen
PY  - 1982
N2  - To assess the contribution of the autonomic nervous system to heart rate recov ery following exertion, heart rate was observed after peak treadmill exercise in six men following parasympathetic blockade (PB) with atropine sulfate (O.03 mg/kg), sympathetic blockade (SB) with propranolol hydrochloride (0.20 mg/ kg), double blockade (DB) with both drugs, and no drugs (ND). Least-squares analysis of each subjects heart rate (HR) as an exponential function of recovery time (t) was computed for each treatment giving an equation of the form HR = aebt. HRs at rest, peak exercise, and 10 min of recovery, the coefficients a and b, and the least-squares correlation coefficient (r) were compared among treatments by nonparametric analysis of variance and rank-sum multiple comparisons. HR recovered in an exponential manner after dynamic exercise in each subject with each of the treatment modes (all treatments r = 0.94). Coefficients a and b differed the most between PB and SB. At the cessation of exercise the decreases in venous return and the systemic need for cardiac output are accompanied by an exponential HR decline. The exponential character of the cardiodeceleration seen after peak exercise appears to be an intrinsic property of the circulation because it occurred under each experimentalcondition. Verf.-Referat
SP  - S. 1572-1575
SN  - 8750-7587
JO  - Journal of applied physiology
IS  - 6
VL  - 53
M3  - Gedruckte Ressource
ID  - PU198401019867
ER  -