PubRank

R L Hughson

Author PubWeight™ 113.12‹?›

Top papers

Rank Title Journal Year PubWeight™‹?›
1 Cerebral critical closing pressure and CO2 responses during the progression toward syncope. J Appl Physiol (1985) 2013 2.01
2 Oxygen uptake kinetics during two bouts of heavy cycling separated by fatiguing sprint exercise in humans. J Appl Physiol (1985) 2002 1.53
3 Contributions of acetylcholine and nitric oxide to forearm blood flow at exercise onset and recovery. Am J Physiol 1997 1.47
4 Interaction of factors determining oxygen uptake at the onset of exercise. J Appl Physiol (1985) 1999 1.42
5 Acceleration of VO2 kinetics in heavy submaximal exercise by hyperoxia and prior high-intensity exercise. J Appl Physiol (1985) 1997 1.39
6 On the fractal nature of heart rate variability in humans: effects of data length and beta-adrenergic blockade. Am J Physiol 1994 1.30
7 Vasodilation and muscle pump contribution to immediate exercise hyperemia. Am J Physiol 1996 1.30
8 A computer linear regression model to determine ventilatory anaerobic threshold. J Appl Physiol Respir Environ Exerc Physiol 1982 1.27
9 Progressive effect of endurance training on VO2 kinetics at the onset of submaximal exercise. J Appl Physiol (1985) 1995 1.24
10 Coarse-graining spectral analysis: new method for studying heart rate variability. J Appl Physiol (1985) 1991 1.22
11 Changes in lumbar lordosis modify the role of the extensor muscles. Clin Biomech (Bristol, Avon) 2000 1.18
12 Effects of acetylcholine and nitric oxide on forearm blood flow at rest and after a single muscle contraction. J Appl Physiol (1985) 1998 1.16
13 Failure of prostaglandins to modulate the time course of blood flow during dynamic forearm exercise in humans. J Appl Physiol (1985) 1996 1.13
14 Autonomic control of heart rate during exercise studied by heart rate variability spectral analysis. J Appl Physiol (1985) 1991 1.11
15 Anaerobic threshold, blood lactate, and muscle metabolites in progressive exercise. J Appl Physiol Respir Environ Exerc Physiol 1983 1.10
16 Heat stroke in a "run for fun". Br Med J 1978 1.09
17 Methodology of spontaneous baroreflex relationship assessed by surrogate data analysis. Am J Physiol 1995 1.08
18 Alveolar oxygen uptake and femoral artery blood flow dynamics in upright and supine leg exercise in humans. J Appl Physiol (1985) 1998 1.08
19 Heat injuries in Canadian mass participation runs. Can Med Assoc J 1980 1.08
20 Delayed kinetics of respiratory gas exchange in the transition from prior exercise. J Appl Physiol Respir Environ Exerc Physiol 1982 1.07
21 Lumbar erector spinae oxygenation during prolonged contractions: implications for prolonged work. Ergonomics 2000 1.06
22 Cerebral blood flow during orthostasis: role of arterial CO2. Am J Physiol Regul Integr Comp Physiol 2005 1.05
23 Effects of exercise and passive head-up tilt on fractal and complexity properties of heart rate dynamics. Am J Physiol Heart Circ Physiol 2001 1.05
24 Vasodilation contributes to the rapid hyperemia with rhythmic contractions in humans. Can J Physiol Pharmacol 1998 1.02
25 WISE 2005: stroke volume changes contribute to the pressor response during ischemic handgrip exercise in women. J Appl Physiol (1985) 2007 0.98
26 Modeling heart rate variability in healthy humans: a turbulence analogy. Phys Rev Lett 2001 0.98
27 Effects of pharmacological adrenergic and vagal modulation on fractal heart rate dynamics. Clin Physiol 2001 0.97
28 A high velocity treadmill running test to assess endurance running potential. Int J Sports Med 1984 0.97
29 Comparison of femoral blood gases and muscle near-infrared spectroscopy at exercise onset in humans. J Appl Physiol (1985) 1999 0.96
30 Beat-by-beat forearm blood flow with Doppler ultrasound and strain-gauge plethysmography. J Appl Physiol (1985) 1995 0.96
31 Comparison of oxygen uptake kinetics during concentric and eccentric cycle exercise. J Appl Physiol (1985) 2001 0.95
32 Time course of brachial artery diameter responses to rhythmic handgrip exercise in humans. Cardiovasc Res 1997 0.94
33 Alterations in blood volume following short-term supramaximal exercise. J Appl Physiol Respir Environ Exerc Physiol 1984 0.94
34 Faster femoral artery blood velocity kinetics at the onset of exercise following short-term training. Cardiovasc Res 1996 0.93
35 Venous emptying mediates a transient vasodilation in the human forearm. Am J Physiol Heart Circ Physiol 2000 0.93
36 Blood flow and muscle oxygen uptake at the onset and end of moderate and heavy dynamic forearm exercise. Am J Physiol Regul Integr Comp Physiol 2001 0.93
37 Change in phase relationship between SBP and R-R interval during lower body negative pressure. Am J Physiol 1995 0.93
38 Fiber type specific glycogen utilization in rat diaphragm during treadmill exercise. J Appl Physiol (1985) 1987 0.92
39 Heart rate variability at rest and exercise: influence of age, gender, and physical training. Can J Appl Physiol 1996 0.90
40 Measurements of cardiac output during constant exercises: comparison of two non-invasive techniques. Int J Sports Med 2004 0.90
41 Effect of exercise on recovery blood pressure in normotensive and hypertensive subjects. Med Sci Sports Exerc 1987 0.90
42 Reduction of intrinsic sinoatrial frequency and norepinephrine response of the exercised rat. Can J Physiol Pharmacol 1977 0.90
43 Fractal nature of short-term systolic BP and HR variability during lower body negative pressure. Am J Physiol 1994 0.89
44 Kinetics of oxygen uptake at the onset of exercise in boys and men. J Appl Physiol (1985) 1998 0.89
45 Inspiratory CO2 increases orthostatic tolerance during repeated tilt. Aviat Space Environ Med 2001 0.88
46 On the fractal nature of heart rate variability in humans: effects of vagal blockade. Am J Physiol 1995 0.88
47 The effects of lumbar massage on muscle fatigue, muscle oxygenation, low back discomfort, and driver performance during prolonged driving. Ergonomics 2006 0.88
48 Effect of hyperoxia and hypoxia on leg blood flow and pulmonary and leg oxygen uptake at the onset of kicking exercise. Can J Physiol Pharmacol 2000 0.87
49 Physical activity is a major contributor to the ultra low frequency components of heart rate variability. Heart 1999 0.87
50 Blood lactate concentration increases as a continuous function in progressive exercise. J Appl Physiol (1985) 1987 0.87
51 Oxygen uptake kinetics from ramp work tests: variability of single test values. J Appl Physiol (1985) 1986 0.87
52 Reduced orthostatic tolerance following 4 h head-down tilt. Eur J Appl Physiol Occup Physiol 1991 0.87
53 Cardiovascular responses to orthostatic tests after a 42-day head-down bed-rest. Eur J Appl Physiol Occup Physiol 1998 0.86
54 The ventilatory threshold gives maximal lactate steady state. Eur J Appl Physiol Occup Physiol 1991 0.86
55 Evaluation of spontaneous baroreflex modulation of sinus node during isometric exercise in healthy humans. Am J Physiol 1994 0.86
56 Impaired cerebrovascular autoregulation and reduced CO₂ reactivity after long duration spaceflight. Am J Physiol Heart Circ Physiol 2012 0.86
57 PET(CO(2)) inversely affects MSNA response to orthostatic stress. Am J Physiol Heart Circ Physiol 2001 0.85
58 Cardiac output in exercise by impedance cardiography during breath holding and normal breathing. J Appl Physiol (1985) 1987 0.85
59 Field testing of VO2peak in cross-country skiers with portable breath-by-breath system. Can J Appl Physiol 2001 0.85
60 Supramaximal exercise after training-induced hypervolemia. I. Gas exchange and acid-base balance. J Appl Physiol (1985) 1987 0.85
61 Rapid blunting of sympathetic vasoconstriction in the human forearm at the onset of exercise. J Appl Physiol (1985) 2003 0.85
62 Forearm blood flow by Doppler ultrasound during test and exercise: tests of day-to-day repeatability. Med Sci Sports Exerc 1996 0.84
63 Muscle chemoreflex elevates muscle blood flow and O2 uptake at exercise onset in nonischemic human forearm. J Appl Physiol (1985) 2001 0.84
64 Oxygen uptake and heart rate responses to treadmill and water running. Can J Sport Sci 1990 0.84
65 Tissue oxygenation by near-infrared spectroscopy and muscle blood flow during isometric contractions of the forearm. Can J Appl Physiol 1999 0.84
66 WISE-2005: tibial and gastrocnemius vein and calf tissue response to LBNP after a 60-day bed rest with and without countermeasures. J Appl Physiol (1985) 2008 0.83
67 Delayed kinetics of VO2 in the transition from prior exercise. Evidence for O2 transport limitation of VO2 kinetics: a review. Int J Sports Med 1983 0.83
68 Effect of prolonged head-down bed rest on complex cardiovascular dynamics. Auton Neurosci 2001 0.83
69 Autonomic nervous system responses to exercise in relation to ventilatory threshold. Chest 1992 0.83
70 Respiratory gas exchange and physiological demands during a fire fighter evaluation circuit in men and women. Eur J Appl Physiol 2008 0.83
71 Estimate of mean tissue O2 consumption at onset of exercise in males. J Appl Physiol (1985) 1987 0.83
72 Adaptation of blood flow during the rest to work transition in humans. Med Sci Sports Exerc 1999 0.82
73 Prostaglandin inhibition causes an increase in reactive hyperaemia after ischaemic exercise in human forearm. Clin Physiol 1999 0.82
74 Reduced heart rate variability during sleep in long-duration spaceflight. Am J Physiol Regul Integr Comp Physiol 2013 0.82
75 Ischemic muscle chemoreflex response elevates blood flow in nonischemic exercising human forearm muscle. Am J Physiol 1999 0.82
76 A study of cardiorespiratory dynamics with step and ramp exercise tests in normoxia and hypoxia. Cardiovasc Res 1989 0.82
77 Heart rate variability and fractal dimension during orthostatic challenges. J Appl Physiol (1985) 1993 0.81
78 On the modeling and interpretation of oxygen uptake kinetics from ramp work rate tests. J Appl Physiol (1985) 1988 0.81
79 Heart rate variability to monitor autonomic nervous system activity during orthostatic stress. J Clin Pharmacol 1994 0.81
80 Gas exchange analysis of immediate CO2 storage at onset of exercise. Respir Physiol 1985 0.81
81 Cardiorespiratory kinetics and femoral artery blood velocity during dynamic knee extension exercise. J Appl Physiol (1985) 1994 0.81
82 Association between arterial stiffness and cerebrovascular resistance in the elderly. J Hum Hypertens 2009 0.81
83 Operation Everest II: an indication of deterministic chaos in human heart rate variability at simulated extreme altitude. Biol Cybern 1993 0.81
84 Respiratory influences on non-linear dynamics of heart rate variability in humans. Biol Cybern 1997 0.81
85 Alterations in the oxygen deficit-oxygen debt relationships with beta-adrenergic receptor blockade in man. J Physiol 1984 0.81
86 Blood acid-base and lactate relationships studied by ramp work tests. Med Sci Sports Exerc 1982 0.81
87 Computer simulation of O2 transport and utilization mechanisms at the onset of exercise. J Appl Physiol (1985) 1992 0.81
88 Ventilatory response to passive head up tilt. Adv Exp Med Biol 1998 0.80
89 Heatstroke in road races. Lancet 1979 0.80
90 Slower Adaptation of VO2 to steady state of submaximal exercise with beta-blockade. Eur J Appl Physiol Occup Physiol 1983 0.80
91 Twitch potentiation after fatiguing exercise in man. Eur J Appl Physiol Occup Physiol 1987 0.80
92 Heterogeneity of responses to orthostatic stress in homozygous twins. J Appl Physiol (1985) 2006 0.80
93 Computerized estimation of lactate threshold. Comput Biomed Res 1986 0.80
94 The effect of citrate loading on exercise performance, acid-base balance and metabolism. Eur J Appl Physiol Occup Physiol 1989 0.80
95 Effects of oral propranolol and exercise protocol on indices of aerobic function in normal man. Can J Physiol Pharmacol 1983 0.80
96 Comparison of a 4-day confinement and head-down tilt on endocrine response and cardiovascular variability in humans. Eur J Appl Physiol Occup Physiol 1996 0.80
97 Peripheral circulatory factors limit rate of increase in muscle O(2) uptake at onset of heavy exercise. J Appl Physiol (1985) 2001 0.79
98 The inotropic and chronotropic responses of the guinea pig and dog myocardium to isoprenaline and salbutamol. Can J Physiol Pharmacol 1975 0.79
99 Changes in the sympathetic nervous system induced by 42 days of head-down bed rest. Am J Physiol 1998 0.79
100 Open-circuit gas exchange analysis in the non-steady-state. Can J Appl Sport Sci 1980 0.79
101 Training-induced hypervolemia: lack of an effect on oxygen utilization during exercise. Med Sci Sports Exerc 1987 0.79
102 Intrinsic rate and cholinergic sensitivity of isolated atria from trained and sedentary rats. Proc Soc Exp Biol Med 1973 0.79
103 Effect of oral propranolol on the anerobic threshold and maximum exercise performance in normal man. Can J Physiol Pharmacol 1981 0.79
104 Circulating norepinephrine and cerebrovascular control in conscious humans. Clin Physiol Funct Imaging 2003 0.79
105 Altered hormonal regulation and blood flow distribution with cardiovascular deconditioning after short-duration head down bed rest. J Appl Physiol (1985) 2007 0.78
106 Repeatability of popliteal blood flow and lower limb vascular conductance at rest and exercise during body tilt using Doppler ultrasound. Physiol Meas 2013 0.78
107 WISE-2005: reduced cerebral blood flow velocity with nitroglycerin--comparison with common carotid artery blood flow. J Gravit Physiol 2007 0.78
108 Continuous increase in blood lactate concentration during different ramp exercise protocols. J Appl Physiol (1985) 1989 0.78
109 Blood flow in the triceps brachii muscle in humans during sustained submaximal isometric contractions. Eur J Appl Physiol 2001 0.78
110 Blood lactate responses in incremental exercise as predictors of constant load performance. Eur J Appl Physiol Occup Physiol 1989 0.77
111 Sympathetic nervous system activity and cardiovascular homeostatis during head-up tilt in patients with spinal cord injuries. Clin Auton Res 2000 0.77
112 Influence of diet on CO2 production and ventilation in constant-load exercise. Respir Physiol 1981 0.77
113 Contractile properties of the human triceps surae following prolonged exercise and beta-blockade. Clin Physiol 1987 0.77
114 On the fractal nature of heart rate variability in humans: effects of respiratory sinus arrhythmia. Am J Physiol 1995 0.77
115 The effects of beta-blockade on electrically stimulated contraction in fatigued human triceps surae muscle. Clin Physiol 1987 0.77
116 Determination of the "anaerobic threshold". J Appl Physiol (1985) 1986 0.77
117 Human tibialis anterior contractile responses following fatiguing exercise with and without beta-adrenoceptor blockade. Clin Physiol 1988 0.77
118 Determination of baroreflex gain using auto-regressive moving-average analysis during spontaneous breathing. Clin Physiol 1999 0.77
119 Frequency domain analysis of ventilation and gas exchange kinetics in hypoxic exercise. J Appl Physiol (1985) 1991 0.77
120 Hormone changes induced by 37.5-h head-down tilt (-6 degrees) in humans. Eur J Appl Physiol Occup Physiol 1994 0.77
121 Modeling the interaction between perfusion pressure and CO2 on cerebral blood flow. Adv Exp Med Biol 2001 0.77
122 Body position and cardiac dynamic and chronotropic responses to steady-state isocapnic hypoxaemia in humans. Exp Physiol 2000 0.77
123 Hemodynamics and brain blood flow during posture change in younger women and postmenopausal women compared with age-matched men. J Appl Physiol (1985) 2012 0.76
124 Faster kinetics of VO2 during arm exercise with circulatory occlusion of the legs. Int J Sports Med 1986 0.76
125 WISE 2005: responses of women to sublingual nitroglycerin before and after 56 days of 6° head-down bed rest. J Appl Physiol (1985) 2012 0.76
126 Cardiovascular response to 4 hours of 6 degrees head-down tilt or of 30 degrees head-up tilt bed rest. Aviat Space Environ Med 1990 0.76
127 Orthostatic tests after a 4-day confinement or simulated weightlessness. Clin Physiol 1997 0.75
128 Anaerobic threshold: review of the concept and directions for future research. Med Sci Sports Exerc 1985 0.75
129 Kinetics of VO(2) with very high intensity exercise. Am J Physiol Regul Integr Comp Physiol 2001 0.75
130 Primary prevention of heat stroke in Canadian long-distance runs. Can Med Assoc J 1980 0.75
131 Reduced oxygen uptake during steady state exercise after 21-day mountain climbing expedition to 6,194 m. Can J Appl Physiol 2001 0.75
132 WISE 2005: flow and nitroglycerin mediated dilation following 56 days of head down tilt bed rest with and without an exercise countermeasure. J Gravit Physiol 2007 0.75
133 WISE-2005: developing a non-invasive method to monitor cardiovascular deconditioning. J Gravit Physiol 2007 0.75
134 Monitoring Road Racing in the Heat. Phys Sportsmed 1983 0.75
135 Do lactate and ventilatory thresholds differ? J Appl Physiol (1985) 1989 0.75
136 Cardiorespiratory interactions during fixed-pace resistive breathing. J Appl Physiol (1985) 1996 0.75
137 Long-distance running in the heat. Can Med Assoc J 1980 0.75
138 The effect of beta-adrenergic blockade on leg blood flow with repeated maximal contractions of the triceps surae muscle group in man. Eur J Appl Physiol Occup Physiol 1990 0.75
139 The effects of hypoxia and hyperoxia on the 1/F nature of breath-by-breath ventilatory variability. Adv Exp Med Biol 1995 0.75
140 Oral and intravenous propranolol during exercise. Clin Pharmacol Ther 1977 0.75
141 Cardiovascular responses to lower body negative pressure before and after 4 h of head-down bed rest and seated control in men and women. J Appl Physiol (1985) 2012 0.75
142 Prolactin responses to chronic exercise in males. Proc Soc Exp Biol Med 1985 0.75
143 Methodologies for measurement of the anaerobic threshold. Physiologist 1984 0.75
144 Effect of beta-adrenergic blockade on VO2 kinetics during pseudorandom binary sequence exercise. Eur J Appl Physiol Occup Physiol 1990 0.75
145 Effects of bromocriptine on sweat gland function during heat acclimatization. Horm Res 1988 0.75
146 WISE 2005: altered cerebrovascular autoregulation after 60 day head-down bed rest. J Gravit Physiol 2007 0.75
147 The cardiovascular system in microgravity: symposium summary. Proc West Pharmacol Soc 2003 0.75
148 WISE-2005: orthostatic tolerance is poorly predicted by acute changes in cardiovascular variables. J Gravit Physiol 2007 0.75
149 Measure the breath-by-breath oxygen uptake (VO2) during a Wingate anaerobic power test. Can J Sport Sci 1988 0.75
150 [Variability of the R-R interval and spontaneous baroreflex before and after exposure to weightlessness]. Presse Med 1994 0.75
151 Mechanical and metabolic alterations in rat diaphragm during electrical stimulation. J Appl Physiol (1985) 1989 0.75
152 Ventilatory CO2 response in endurance-trained rats. Eur J Appl Physiol Occup Physiol 1980 0.75
153 Comparison of cardiac output during exercise by single-breath and CO2-rebreathing methods. J Appl Physiol (1985) 1985 0.75
154 Fluid and electrolyte regulation in space. Adv Space Biol Med 1992 0.75
155 Gender affects sympathetic neurovascular control during postural stress. J Gravit Physiol 2002 0.75
156 Probing heart rate and blood pressure control mechanisms during graded levels of lower body negative pressure (LBNP). Microgravity Q 1992 0.75