Relationship of rate of perceived exertion on lactate threshold and physiological variables with incremental running test

2018 ◽  
Vol 18 (1) ◽  
pp. 5
Author(s):  
Sarika Chaudhary ◽  
Mohnish Sharma
Keyword(s):  
Lactate Threshold ◽  
Perceived Exertion ◽  
Physiological Variables ◽  
Rate Of Perceived Exertion ◽  
Relationship Of

Predicting Lactate Threshold With Rate of Perceived Exertion in Young Competitive Male Swimmers

2021 ◽  
pp. 003151252110052
Author(s):  
Jhonny K. F. da Silva ◽  
Bruna B. Sotomaior ◽  
Carolina F. Carneiro ◽  
Patrick Rodrigues ◽  
Lee Wharton ◽  
...  
Keyword(s):  
Lactate Threshold ◽  
Perceived Exertion ◽  
Lactate Concentration ◽  
Blood Lactate Concentration ◽  
Test Protocol ◽  
Male Athletes ◽  
Rate Of Perceived Exertion ◽  
Significant Difference ◽  
Maximal Deviation ◽  
Competitive Swimmers

The purpose of this study was to verify the effectiveness of the rate of perceived exertion threshold (RPET) for predicting young competitive swimmers’ lactate threshold (LT) during incremental testing. We enrolled 13 male athletes ( M age = 16, SD = 0.6 years) in an incremental test protocol consisting of eight repetitions of a 100-meter crawl with 2-minute intervals between each repetition. We collected data for blood lactate concentration ([La]) and Borg scale rate of perceived exertion (RPE) at the end of each repetition. The results obtained were: M RPET = 4.98, SD = 1.12 arbitrary units (A.U.) and M lactate threshold = 4.24, SD = 1.12 mmol.L−1, with [La] and RPE identified by the maximal deviation (Dmax) method without a significant difference ( p > 0.05) and large correlations between DmaxLa and DmaxRPE at variables for time (r = 0.64), velocity (r = 0.67) and percentage of personal best time (PB) (r = 0.60). These results suggest that RPET is a good predictor of LT in young competitive swimmers.

Temperature effects on ventilatory rate, heart rate, and preferred pedal rate during cycle ergometry

1995 ◽  
Vol 79 (3) ◽  
pp. 781-785 ◽  
Author(s):  
F. Leweke ◽  
K. Bruck ◽  
H. Olschewski
Keyword(s):  
Heart Rate ◽  
Body Temperature ◽  
Perceived Exertion ◽  
Sweat Rate ◽  
Cycle Ergometer ◽  
O2 Uptake ◽  
Experimental Time ◽  
Physiological Variables ◽  
Pedal Rate ◽  
Rate Of Perceived Exertion

According to the most customary exercise protocols, core temperature (Tc) rises in parallel with workload (WL) and experimental time. Physiological variables, however, may be related to each of these factors. To investigate effects of WL independent of experimental time and body temperature, we employed four moderate WLs in 4-min steps between 35 and 65% peak O2 uptake (VO2 peak) in randomized order. To investigate independent effects of body temperature, the same work protocol was performed both after resting in comfortable ambient temperature [control test (Cont)] and after a double cold exposure [precooling test (Pret)], where Tc and the temperature set point are decreased by approximately 0.6 and 0.3 degrees C, respectively. Eight male subjects (24 +/- 1.9 yr, VO2 peak 4.9 +/- 0.5 l/min) worked on a cycle ergometer in a climatic chamber. Heart rate (HR) and breathing frequency (BF), but not preferred pedal rate (PR), were positively correlated to Tc, the slopes amounting to 17 and 3.75 min-1/degree C for HR and BF, respectively. The regression appeared linear over the whole temperature range, and the regression lines were not shifted by precooling. PR was increased by time, but Pret-Cont differences of PR and Tc were inversely correlated (r = -0.50, P < 0.01). The effects of WL were highly significant on HR, O2 uptake, and rate of perceived exertion but not on BF, PR, and sweat rate. The relation of rate of perceived exertion to HR was shifted by precooling.

Physiological Responses to Cycling for 60 Minutes at Maximal Lactate Steady State

2000 ◽  
Vol 25 (4) ◽  
pp. 250-261 ◽  
Author(s):  
Claude Lajoie ◽  
Louis Laurencelle ◽  
François Trudeau
Keyword(s):  
Heart Rate ◽  
Steady State ◽  
Blood Lactate ◽  
Perceived Exertion ◽  
Slow Component ◽  
Minute Ventilation ◽  
Maximal Lactate Steady State ◽  
Physiological Variables ◽  
Rate Of Perceived Exertion ◽  
Continuous Test

Changes in physiological variables during a 60-min continuous test at maximal lactate steady state (MLSS) were studied using highly conditioned cyclists (1 female and 9 males, aged 28.3 ± 8.1 years). To determine power at MLSS, we tested at 8-min increments and interpolated the power corresponding to a blood lactate value of 4 mmol/L. During the subsequent 60-min exercise at MLSS, we observed a sequential increase of physiological parameters, in contrast to stable blood lactate. Heart rate drifted upward from beginning to end of exercise. This became statistically significant after 30 min. From 10-60 min of exercise, a change of + 12.6 ± 3.2 bpm was noted. Significant drift was seen after 30 min for the respiratory exchange ratio, after 40 min for the rate of perceived exertion using the Borg scale, and after 50 min for % [Formula: see text] and minute ventilation. This slow component of [Formula: see text] may be the result of higher recruitment of type II fibers. Key words: Rate of perceived exertion, heart rate, oxygen consumption, blood lactate, cycling

scholarly journals Correlation between physiological variables and rate of perceived exertion during a water exercises classes

2014 ◽  
Vol 7 (3) ◽  
pp. 111-114
Author(s):  
M. Olkoski ◽  
S. Matheus ◽  
E. de Moraes ◽  
D. Tusset ◽  
L. dos Santos ◽  
...  
Keyword(s):  
Perceived Exertion ◽  
Physiological Variables ◽  
Rate Of Perceived Exertion ◽  
Water Exercises

Identification of training status differences using perceived exertion threshold

2016 ◽  
Vol 41 (4) ◽  
pp. 456-459
Author(s):  
Guilherme A. Ferreira ◽  
Romulo Bertuzzi ◽  
Adriano E. Lima-Silva ◽  
Carlos Malfatti ◽  
Fernando R. De-Oliveira ◽  
...  
Keyword(s):  
Power Output ◽  
Lactate Threshold ◽  
Perceived Exertion ◽  
Training Status ◽  
Physically Active ◽  
Rate Of Perceived Exertion ◽  
Status Differences

We investigated if the rate of perceived exertion (RPE) threshold is as sensitive as the lactate threshold to detect training differences. Lactate and RPE thresholds were identified in well-trained cyclists and physically active males. Power output was higher in well-trained cyclists than in physically active individuals for both thresholds (p < 0.05). Our results suggest that RPE threshold is successful in discriminating differences between well-trained cyclists and physically active individuals.

Effect of a Reduced-CHO Diet on the Rate of Perceived Exertion Curve During an Incremental Test

2014 ◽  
Vol 24 (5) ◽  
pp. 532-542 ◽  
Author(s):  
Guilherme Assuncao Ferreira ◽  
Raul Osiecki ◽  
Adriano Eduardo Lima-Silva ◽  
Michel Cardoso de Angelis-Pereira ◽  
Fernando Roberto De-Oliveira
Keyword(s):  
Power Output ◽  
Lactate Threshold ◽  
Perceived Exertion ◽  
Control Diet ◽  
Cycle Ergometer ◽  
Incremental Test ◽  
Physically Active ◽  
Rate Of Perceived Exertion ◽  
Short Period ◽  
Proportional Increase

The objective of this study was to evaluate the effect of a reduced-carbohydrate (reduced-CHO) diet on the rate of perceived exertion (RPE) curve during an incremental test. Nine physically active men performed a progressive incremental test on a cycle ergometer (25 W·2 min−1) after 72 hr on either a control diet (60% CHO) or a reduced-CHO diet (30% CHO). Lactate and RPE thresholds were identified using the Dmax method (DmaxLa and DmaxRPE, respectively). Power output, heart rate and RPE scores in DmaxLa and DmaxRPE were similar between the diets and were not different from each other, regardless of the diet. Lactate values were consistently higher (p < .05) in the control diet compared with the reduced-CHO diet during power output after the lactate breakpoint; however, they were not accompanied by a proportional increase in RPE scores. These results suggest that DmaxRPE and DmaxLa are not dissociated after a short-period reduced-CHO diet, whereas the lactate values after the lactate threshold are reduced with a reduced-CHO diet, although they are not accompanied by alterations in RPE.

DIFFERENCES IN BLOOD PRESSURE AND RATE OF PERCEIVED EXERTION RESPONSES IN ARM AND LEG EXERCISE.

2004 ◽  
Vol 18 (4) ◽  
pp. 30-31
Author(s):  
Konrad J. Dias ◽  
Kathleen Amos ◽  
Jennifer Koons ◽  
Patrick Martchink ◽  
Jared Smiddy ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Perceived Exertion ◽  
Rate Of Perceived Exertion ◽  
Leg Exercise
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