EFFECTS OF MODE OF EXERCISE AND GENDER ON OXYGEN CONSUMPTION, RATINGS OF PERCEIVED EXERTION, AND LACTATE AT EQUATED HEART RATE INTENSITIES1134

1996 ◽  
Vol 28 (Supplement) ◽  
pp. 190
Author(s):  
C. C. Loebel ◽  
S. E. Navin ◽  
J. C. Marker
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Perceived Exertion ◽  
Ratings Of Perceived Exertion ◽  
And Gender

scholarly journals Caffeine effects on velocity selection and physiological responses during RPE production

2016 ◽  
Vol 41 (10) ◽  
pp. 1077-1082 ◽  
Author(s):  
James M. Green ◽  
Alyssa Olenick ◽  
Caroline Eastep ◽  
Lee Winchester
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Repeated Measures ◽  
Perceived Exertion ◽  
Statistical Significance ◽  
Maximal Oxygen Consumption ◽  
Ratings Of Perceived Exertion ◽  
Caffeine Ingestion ◽  
Recreational Runners ◽  
Velocity Selection

Caffeine (CAF) blunts estimated ratings of perceived exertion (RPE) but the effects on RPE production are unclear. This study examined effects of acute caffeine ingestion during treadmill exercise where participants exercised at prescribed RPE 4 and 7. Recreational runners (maximal oxygen consumption = 51.4 ± 9.8 mL·kg−1·min−1) (n = 16) completed a maximal treadmill test followed by trials where they selected treadmill velocity (VEL) (1% grade) to produce RPE 4 and RPE 7 (10 min each). RPE production trials followed CAF (6 mg·kg−1) or placebo (PLA) (counterbalanced) ingestion. Participants were blinded to treadmill VEL but the Omni RPE scale was in full view. Repeated-measures ANOVA showed a main effect (trial) for VEL (CAF ∼5 m·min−1 faster) for RPE 4 (p = 0.07) and RPE 7 (p = 0.03). Mean heart rate and oxygen consumption responses were consistently higher for CAF but failed to reach statistical significance. Individual responses to CAF were labeled positive using a criterion of 13.4 m·min−1 faster for CAF (vs. PLA). Ten of 32 trials (31%) were positive responses. In these, systematic increases were observed for heart rate (∼12 beats·min−1) and oxygen consumption (∼5.7 mL·kg−1·min−1). Blunted/stable respiratory exchange ratio values at higher VEL for positive responders suggest increased free fatty acid reliance during CAF. In conlusion, mean results show a mild effect of CAF during RPE production. However, individual responses more clearly indicate whether a true effect is possible. Trainers and individuals should consider individual responses to ensure effectively intensity regulation.

scholarly journals Potential Effect of Beetroot Juice Supplementation on Exercise Economy in Well-Trained Females

2021 ◽  
Author(s):  
Stacey P A Forbes ◽  
Lawrence L. Spriet
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Perceived Exertion ◽  
Potential Effect ◽  
Beetroot Juice ◽  
Ratings Of Perceived Exertion ◽  
Exercise Economy ◽  
Higher Power ◽  
Nitrate Supplementation ◽  
Power Outputs

This study examined if acute dietary nitrate supplementation (140 ml beetroot juice, BRJ) would reduce oxygen consumption (V̇O2) during cycling at power outputs of 50 and 70% V̇O2max in 14 well-trained female Canadian University Ringette League athletes. BRJ had no effect on VO2 or heart rate but significantly reduced ratings of perceived exertion (RPE) at both intensities. Individually, 4 participants responded to BRJ supplementation with a ≥3% reduction in V̇O2 at the higher power output. • Acute BRJ supplementation did not improve exercise economy in well-trained females, but significantly reduced RPE. However, 4/14 subjects did respond with a ≥3% V̇O2 reduction.

Omni Scale Rating of Perceived Exertion at Ventilatory Breakpoint by Direct Observation of Children's Kinematics

2007 ◽  
Vol 104 (3) ◽  
pp. 975-984 ◽  
Author(s):  
Robert J. Robertson ◽  
Fredric L. Goss ◽  
Deborah J. Aaron ◽  
A. C. Utter ◽  
E. Nagle
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Perceived Exertion ◽  
Treadmill Exercise ◽  
Rating Of Perceived Exertion ◽  
Ratings Of Perceived Exertion ◽  
Trained Observer ◽  
Self Rating ◽  
Code Group ◽  
Omni Scale

Direct kinematic observation was used to measure ratings of perceived exertion at the ventilatory breakpoint (RPE-Vpt) in 10- to 14-yr.-old girls ( n = 22) and boys ( n = 22). RPE for the overall body, legs, and chest were simultaneously estimated by a trained observer and self-rated by a subject during treadmill exercise using the Children's OMNI-Walk/Run Scale. Subjects' heart rate and oxygen consumption were measured during each minute of exercise. Vpt for the girls and boys, respectively, were 64.2 and 66.5% VO2 max. RPE-Vpt ranged from 6.0 to 6.5 Overall, 7.1 to 7.6 Legs, and 5.0 to 5.5 Chest for both the observation and self-rating procedures. Responses indicated (a) RPE-Vpt (Overall, Legs, Chest) did not differ ( p>.05) between the observer and self-rating procedures and (b) Observer RPE-Vpt-Legs was greater ( p<.05) than RPE-Vpt-Chest. Findings validated direct kinematic observation to code group-normalized RPE-Vpt for girls and boys performing treadmill exercise.

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.

Oxygen Uptake, Heart Rate, and Ratings of Perceived Exertion at the PWC&OV0312;o2

2009 ◽  
Vol 23 (4) ◽  
pp. 1292-1299 ◽  
Author(s):  
Michelle Mielke ◽  
Terry J Housh ◽  
C Russell Hendrix ◽  
Clayton L Camic ◽  
Jorge M Zuniga ◽  
...  
Keyword(s):  
Heart Rate ◽  
Oxygen Uptake ◽  
Perceived Exertion ◽  
Ratings Of Perceived Exertion

A Pilot Study Comparing Physiological Responses of Phase III Cardiac Patients to Recumbent and Upright Exercise Using the RPE Scale

2005 ◽  
Vol 100 (2) ◽  
pp. 357-361 ◽  
Author(s):  
Meir Magal ◽  
Robert F. Zoeller
Keyword(s):  
Heart Rate ◽  
Pilot Study ◽  
Cardiac Rehabilitation ◽  
Perceived Exertion ◽  
Physiological Responses ◽  
Cardiac Patients ◽  
Phase Iii ◽  
Ratings Of Perceived Exertion ◽  
Physiological Differences ◽  
Stepping Exercise

Ratings of perceived exertion (RPE) are used for exercise programming of cardiac rehabilitation patients, whenever it is difficult to use heart rate to set intensity due to medication or other factors. This investigation examined the physiological responses to two stepping exercise modes (upright and recumbent) at the same RPE. Analysis indicated significant physiological differences between the modes of exercise which may be mediated by postural differences. Specifically, the physiological responses to the recumbent exercise, but not the upright exercise, had the expected relationship with RPE, with recumbent stepping requiring less physiological effort than the upright stepping at the same RPE. As such, we cannot recommend with confidence that the prescription for upright exercise be made based on data from recumbent exercise or vice-versa.

scholarly journals Recovery behavior after matches for returning to training in volleyball athletes

2021 ◽  
Vol 38 (5) ◽  
pp. 343-349
Author(s):  
Ananda S. Cardoso ◽  
Guilherme P. Berriel ◽  
Pedro Schons ◽  
Rochelle R. Costa ◽  
Luiz Fernando M. Kruel
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Negative Correlation ◽  
Perceived Exertion ◽  
Recovery Period ◽  
Ratings Of Perceived Exertion ◽  
Significance Level ◽  
Recovery Behavior ◽  
Vertical Jumps ◽  
And Training

The aim of this research was to evaluate the behavior of vertical jumps performance in professional volleyball athletes during matches and training and their relationships with fatigue and recovery through heart rate variability (HRV), ratings of perceived exertion (RPE) and perceived recovery status (PRS). Nine male professional volleyball athletes participated in the study, with mean age: 25.66 ± 5.7 years, mean body mass: 97.81 ± 8.65 Kg and mean height: 200.94 ± 5.19 cm, with experience in national and international competitions. HRV and PRS were evaluated in the morning of matches and in the presentation for the first day of training after matches. RPE was collected immediately after matches and at the end of training days. Jumps performance was monitored during the matches and during the first days of training. The data was grouped by matches and training sessions. Significance level adopted was α ≤ 0.05. There were no alterations in HRV and PRS evaluated after matches and before training sessions, as well as in RPE after training. Jumps height was greater during the matches (p< 0.013) and there were no differences in the number of jumps. There was a positive correlation between the number of jumps during matches and PRS before matches (r= 0.336, p= 0.015) and a negative correlation between the number of jumps during training and pre-training PRS (r= -0.318, p= 0.002). We conclude that the recovery period proposed by the team proved to be sufficient for the athletes to maintain the same condition for returning to training. This information can assist physical trainers to prescribe training loads for the return to training.

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