Effect of Carbohydrate Substrate Availability on Ratings of Perceived Exertion during Prolonged Running

1997 ◽  
Vol 7 (4) ◽  
pp. 274-285 ◽  
Author(s):  
Alan Utter ◽  
Jie Kang ◽  
David Nieman ◽  
Bev Warren
Keyword(s):  
Perceived Exertion ◽  
Substrate Availability ◽  
Ratings Of Perceived Exertion

Effect of Carbohydrate Substrate Availability on Ratings of Perceived Exertion during Prolonged Exercise of Moderate Intensity

1996 ◽  
Vol 82 (2) ◽  
pp. 495-506 ◽  
Author(s):  
Jie Kang ◽  
Robert J. Robertson ◽  
Fredric L. Goss ◽  
Sergio G. DaSilva ◽  
Paul Visich ◽  
...  
Keyword(s):  
Perceived Exertion ◽  
Sucrose Solution ◽  
Endurance Performance ◽  
Peak Oxygen Uptake ◽  
Moderate Intensity ◽  
Substrate Availability ◽  
Ratings Of Perceived Exertion ◽  
Blood Concentrations ◽  
Dependent Variables ◽  
Exercise Induced

This investigation examined the effect of carbohydrate substrate availability on ratings of perceived exertion (RPE) during cycling at moderate intensity to exhaustion and the relation between submaximal endurance performance and RPE obtained following 2 hr. of cycling at moderate intensity. Seven male cyclists performed two exercise trials at power output corresponding to 70% of their peak oxygen uptake until exhaustion. Subjects ingested either a 6% glucose/sucrose solution at the rate of 0.6 g · kg−1 (Body Weight) · hr.−1 or an equal volume of artificially flavored placebo every 20 min. throughout the exercise trials. RPE for the legs, chest, and over-all body, and oxygen consumption, expired ventilation, carbohydrate oxidation rate, and blood concentrations of glucose, glycerol, and lactate were measured every 20 min. throughout exercise and at exercise termination. Statistical analysis of these dependent variables indicates that (1) an exercise-induced decrease in blood-borne carbohydrate substrate intensifies leg and over-all perceptions of exertion during the later stages of prolonged cycling at 70% VO2peak. (2) Factors other than availability of blood-borne carbohydrate substrate may influence perceptual intensity at exhaustion. (3) Ratings of perceived exertion for the legs and over-all body obtained after 2 hr. of cycling at moderate intensity may be useful in predicting submaximal endurance performance.

Effect of exercise modality on ratings of perceived exertion at various lactate concentrations

1991 ◽  
Vol 23 (1) ◽  
pp. 88???92 ◽  
Author(s):  
R. K. HETZLER ◽  
R. L. SEIP ◽  
S. H. BOUTCHER ◽  
E. PIERCE ◽  
D. SNEAD ◽  
...  
Keyword(s):  
Perceived Exertion ◽  
Ratings Of Perceived Exertion ◽  
Exercise Modality

Psychophysical and physiological comparison of squat and semi-squat lifting by young males

1999 ◽  
Vol 2 (1) ◽  
pp. 17-26
Author(s):  
Leon Straker ◽  
Carol Cain
Keyword(s):  
Heart Rate ◽  
Perceived Exertion ◽  
Ratings Of Perceived Exertion ◽  
Lower Heart Rate ◽  
Young Males ◽  
Squat Lifting

A comparison between semi-squat and squat techniques was made for floor to knuckle height lifting using maximum acceptable weight (MAW), ratings of perceived exertion (RPE) and heart rate. Semi-squat lifting resulted in greater MAW with lower RPE and lower heart rate compared to squat lifting. Discomfort was most commonly reported in knees/quadriceps with squat lifting. Twelve of the 13 subjects preferred the semi-squat technique. The results provide evidence that the semi-squat technique may have benefits over the squat technique for lifting a medium sized box from floor to knuckle height.

scholarly journals Functional Translation of Exercise Responses from Exercise Testing to Exercise Training: The Test of a Model

2021 ◽  
Vol 6 (3) ◽  
pp. 66
Author(s):  
Tristan Tyrrell ◽  
Jessica Pavlock ◽  
Susan Bramwell ◽  
Cristina Cortis ◽  
Scott T. Doberstein ◽  
...  
Keyword(s):  
Exercise Testing ◽  
Exercise Test ◽  
Perceived Exertion ◽  
Exercise Prescription ◽  
Test Results ◽  
Training Intensity ◽  
Ratings Of Perceived Exertion ◽  
Metabolic Equivalents ◽  
Cardiovascular Drift ◽  
And Training

Exercise prescription based on exercise test results is complicated by the need to downregulate the absolute training intensity to account for cardiovascular drift in order to achieve a desired internal training load. We tested a recently developed generalized model to perform this downregulation using metabolic equivalents (METs) during exercise testing and training. A total of 20 healthy volunteers performed an exercise test to define the METs at 60, 70, and 80% of the heart rate (HR) reserve and then performed randomly ordered 30 min training bouts at absolute intensities predicted by the model to achieve these levels of training intensity. The training HR at 60 and 70% HR reserve, but not 80%, was significantly less than predicted from the exercise test, although the differences were small. None of the ratings of perceived exertion (RPE) values during training were significantly different than predicted. There was a strong overall correlation between predicted and observed HR (r = 0.88) and RPE (r = 0.52), with 92% of HR values within ±10 bpm and 74% of RPE values within ±1 au. We conclude that the generalized functional translation model is generally adequate to allow the generation of early absolute training loads that lead to desired internal training loads.

The Effect of Training and Epinephrine Infusion on Ratings of Perceived Exertion (RPE)

1998 ◽  
Vol 19 (02) ◽  
pp. 121-124 ◽  
Author(s):  
C. Womack ◽  
S. Davis ◽  
J. Weltman ◽  
J. Blumer ◽  
E. Barrett ◽  
...  
Keyword(s):  
Perceived Exertion ◽  
Ratings Of Perceived Exertion ◽  
Epinephrine Infusion
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