scholarly journals Choosing Exercise Cadence on the Outdoor Stepper for Various Exercise Intensity

2018 ◽  
Vol 6 (10) ◽  
pp. 177
Author(s):  
Yeliz Ozdol Pinar ◽  
Mert Eray Onen ◽  
Musatafa Said Erzeybek ◽  
Goktug Sanli ◽  
Salih Pinar
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Perceived Exertion ◽  
Moderate Exercise ◽  
Public Parks ◽  
Metabolic Equivalent ◽  
Mean Values ◽  
Warm Up ◽  
The Public ◽  
Metabolic Equivalent Of Task

Public parks and gardens are gaining numerous outdoor fitness equipment (OFE), easily accessed by the public. Most people use this equipment without any guidance and thus there is a need for basic guidelines on how to use the equipment. This study offers a practical guideline for exercising on one of the most widely used pieces of OFE, the outdoor stepping machine (OSM). Thirty-four healthy adults (nine females, 25 males) participated in workouts of three separate stepping exercises at different intensities, controlled by stepping cadence. At each 5-minute phase, rated perceived exertion (RPE), oxygen consumption (VO2), metabolic equivalent of task (MET) and heart rate (HR) were measured. Corresponding MET values of exercise cadences were calculated to be 5.3 at 80 steps.min−1, 6.0 at 96 steps.min−1 and 6.6 at 112 steps.min−1. Mean values for RPE at each stepping cadence were 9.1 (very light), 11.9 (moderate) and 14.8 (difficult), respectively. In conclusion, when the ACSM’s guidelines for indoor stepper machine (ISM) were taken as a reference, 80 steps.min−1 were suitable for warm-up, 96 and 112 steps.min−1 were appropriate for moderate exercise. People exercising on OSMs could easily use the cadence or the RPE scale as a guideline to exercise at the desired intensity.

scholarly journals Can Physical Activity While Sedentary Produce Health Benefits? A Single-Arm Randomized Trial

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Marvin A. Sackner ◽  
Jose R. Lopez ◽  
Veronica Banderas ◽  
Jose A. Adams
Keyword(s):  
Physical Activity ◽  
Oxygen Consumption ◽  
Physical Inactivity ◽  
Health Benefits ◽  
Metabolic Equivalent ◽  
Behavior Change Interventions ◽  
Supine Posture ◽  
Metabolic Equivalent Of Task ◽  
Seated Posture

Abstract Background Sedentary time poses a risk to health. Substituting physical activity for inactivity is obvious but this requires a behavior change. Interventions advocated to decrease uninterrupted physical inactivity (defined as Metabolic Equivalent of Task (METS) less than 1.5) are important. One such intervention is accomplished with the Gentle Jogger (GJ), a low risk motorized wellness device which produces effortless, rapid motion of the lower extremities simulating locomotion or fidgeting. GJ produces health benefits in type 2 diabetes, heart disease, and high blood pressure. The purpose of this trial was to ascertain whether GJ increases METS above 1.5 to explain its effectiveness despite sedentary behavior or whether tapping is responsible. Methods A randomized single-arm trial was conducted. Subjects were randomized to begin the study in either the supine or seated postures and on the same day crossed over with the starting posture reversed. Oxygen consumption was measured at rest and during GJ. Results Twenty-six subjects were studied (15 women and 11 men) with a mean age of 44 ± 15 years and BMI 27.9 ± 5.0, 19 were overweight or obese, and 7 had normal BMI. GJ increased oxygen consumption and METS 15% in the seated posture and 13% in the supine posture. No individual receiving GJ achieved METS exceeding 1.5. Conclusions In a moderately obese population, GJ in seated or supine posture did not exceed 1.5 METS. The values are comparable to those reported for sit-stand interventions and cannot explain the health benefits of GJ. Trial registration ClinicalTrials.gov, NCT03602365. Registered on July 26, 2018

scholarly journals Acute Effects of Salvia Supplementation on Cognitive Function in Athletes During a Fatiguing Cycling Exercise: A Randomized Cross-Over, Placebo-Controlled, and Double-Blind Study

2021 ◽  
Vol 8 ◽  
Author(s):  
Nicolas Babault ◽  
Ahmad Noureddine ◽  
Nicolas Amiez ◽  
Damien Guillemet ◽  
Carole Cometti
Keyword(s):  
Heart Rate ◽  
Reaction Time ◽  
Cognitive Function ◽  
Stroop Task ◽  
Perceived Exertion ◽  
Digit Span ◽  
Acute Effects ◽  
Warm Up ◽  
Positive Effects ◽  
Fatiguing Exercise

Background:Salvia (sage) supplementation has been shown to improve the cognition function in healthy individuals or patients (e.g., attention, memory). To date, no study has explored its relevancy in the context of sporting performance. The aim of this study was to explore the acute effects of a combination of Salvia officinalis and Salvia lavandulaefolia on cognitive function in athletes performing a fatiguing cycling task.Methods: Twenty-six volunteers were included in this cross-over, randomized, double-bind vs. placebo trial. Two hours before the two experimental sessions (here called SAGE and PLACEBO), volunteers randomly received a supplementation of sage or placebo. During each experimental session, participants were tested at four occasions while cycling during a warm-up, in the middle and at the end of a fatiguing task and after a short 5-min recovery. Tests included a Stroop task, a simple reaction time task, and a backward digit span memory task. Heart rate and rating of perceived exertion (RPE) were also measured at the beginning of the four test sessions.Results: Heart rate was significantly greater during the fatiguing exercise than during warm-up and recovery (P < 0.001) without any supplementation effect. RPE was greater during the fatiguing exercise than during warm-up and recovery (P < 0.001). Moreover, RPE was significantly lower during the SAGE session as compared to PLACEBO (P = 0.002). Reaction time was not altered during the exercise but was significantly shorter with SAGE as compared to PLACEBO (P = 0.023). The Stroop task only revealed significantly longer reaction time during warm-up as compared to recovery (P = 0.02) independently of the supplementation. The digit span memory test revealed a significant greater span score with SAGE as compared to PLACEBO (P = 0.044).Conclusion: The combination of Salvia improved the cognitive functions (perceived exertion, working memory, and reaction time). The positive effects were obtained in fresh condition and were maintained with fatigue.

Making the Grade: An Exploration of Incline Running on a Bodyweight-Supportive Treadmill

2020 ◽  
pp. 1-5
Author(s):  
Megan Wagner ◽  
Kevin D. Dames
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Repeated Measures ◽  
Perceived Exertion ◽  
Rating Of Perceived Exertion ◽  
Treadmill Running ◽  
Metabolic Effects ◽  
Metabolic Demand ◽  
Experimental Conditions ◽  
Cross Sectional

Context: Bodyweight-supporting treadmills are popular rehabilitation tools for athletes recovering from impact-related injuries because they reduce ground reaction forces during running. However, the overall metabolic demand of a given running speed is also reduced, meaning athletes who return to competition after using such a device in rehabilitation may not be as fit as they had been prior to their injury. Objective: To explore the metabolic effects of adding incline during bodyweight-supported treadmill running. Design: Cross-sectional. Setting: Research laboratory. Participants: Fourteen apparently healthy, recreational runners (6 females and 8 males; 21 [3] y, 1.71 [0.08] m, 63.11 [6.86] kg). Interventions: The participants performed steady-state running trials on a bodyweight-supporting treadmill at 8.5 mph. The control condition was no incline and no bodyweight support. All experimental conditions were at 30% bodyweight support. The participants began the sequence of experimental conditions at 0% incline; this increased to 1%, and from there on, 2% incline increases were introduced until a 15% grade was reached. Repeated-measures analysis of variance was used to compare all bodyweight-support conditions against the control condition. Main Outcome Measures: Oxygen consumption, heart rate, and rating of perceived exertion. Results: Level running with 30% bodyweight support reduced oxygen consumption by 21.6% (P < .001) and heart rate by 12.0% (P < .001) compared with the control. Each 2% increase in incline with bodyweight support increased oxygen consumption by 6.4% and heart rate by 3.2% on average. A 7% incline elicited similar physiological measures as the unsupported, level condition. However, the perceived intensity of this incline with bodyweight support was greater than the unsupported condition (P < .001). Conclusions: Athletes can maintain training intensity while running on a bodyweight-supporting treadmill by introducing incline. Rehabilitation programs should rely on quantitative rather than qualitative data to drive exercise prescription in this modality.

Effects of Varying Post-Warm-Up Recovery Time on 200-m Time-Trial Swim Performance

2007 ◽  
Vol 2 (2) ◽  
pp. 201-211 ◽  
Author(s):  
Thomas Zochowski ◽  
Elizabeth Johnson ◽  
Gordon G. Sleivert
Keyword(s):  
Heart Rate ◽  
Blood Lactate ◽  
Recovery Time ◽  
Perceived Exertion ◽  
Time Trial ◽  
Rating Of Perceived Exertion ◽  
Warm Up ◽  
Swimming Time ◽  
Time Trial Performance ◽  
Trial Performance

Context:Warm-up before athletic competition might enhance performance by affecting various physiological parameters. There are few quantitative data available on physiological responses to the warm-up, and the data that have been reported are inconclusive. Similarly, it has been suggested that varying the recovery period after a standardized warm-up might affect subsequent performance.Purpose:To determine the effects of varying post-warm-up recovery time on a subsequent 200-m swimming time trial.Methods:Ten national-caliber swimmers (5 male, 5 female) each swam a 1500-m warm-up and performed a 200-m time trial of their specialty stroke after either 10 or 45 min of passive recovery. Subjects completed 1 time trial in each condition separated by 1 wk in a counterbalanced order. Blood lactate and heart rate were measured immediately after warm-up and 3 min before, immediately after, and 3 min after the time trial. Rating of perceived exertion was measured immediately after the warm-up and time trial.Results:Time-trial performance was significantly improved after 10 min as opposed to 45 min recovery (136.80 ± 20.38 s vs 138.69 ± 20.32 s, P < .05). There were no significant differences between conditions for heart rate and blood lactate after the warm-up. Pre-time-trial heart rate, however, was higher in the 10-min than in the 45-min rest condition (109 ± 14 beats/min vs 94 ± 21 beats/min, P < .05).Conclusions:A post-warm-up recovery time of 10 min rather than 45 min is more beneficial to 200-m swimming time-trial performance.

An Assessment of the Validity and Reliability of Two Perceived Exertion Rating Scales among Hong Kong Children

2002 ◽  
Vol 95 (3_suppl) ◽  
pp. 1047-1062 ◽  
Author(s):  
Mee-Lee Leung ◽  
Pak-Kwong Chung ◽  
Raymond W. Leung
Keyword(s):  
Heart Rate ◽  
Hong Kong ◽  
Oxygen Consumption ◽  
Exercise Intensity ◽  
Power Output ◽  
Perceived Exertion ◽  
Rating Scales ◽  
Rating Of Perceived Exertion ◽  
Validity And Reliability ◽  
Effort Rating

This study evaluated the validity and reliability of the Chinese-translated (Cantonese) versions of the Borg 6–20 Rating of Perceived Exertion (RPE) scale and the Children's Effort Rating Table (CERT) during continuous incremental cycle ergometry with 10- to 11-yr.-old Hong Kong school children. A total of 69 children were randomly assigned, with the restriction of groups being approximately equal, to two groups using the two scales, CERT ( n = 35) and RPE ( n = 34). Both groups performed two trials of identical incremental continuous cycling exercise (Trials 1 and 2) 1 wk. apart for the reliability test. Objective measures of exercise intensity (heart rate, absolute power output, and relative oxygen consumption) and the two subjective measures of effort were obtained during the exercise. For both groups, significant Pearson correlations were found for perceived effort ratings correlated with heart rate ( rs ≥ .69), power output ( rs ≥ .75), and oxygen consumption ( rs ≥ .69). In addition, correlations for CERT were consistently higher than those for RPE. High test-retest intraclass correlations were found for both the effort ( R = .96) and perceived exertion ( R = 89) groups, indicating that the scales were reliable. In conclusion, the CERT and RPE scales, when translated into Cantonese, are valid and reliable measures of exercise intensity during controlled exercise by children. The Effort rating may be better than the Perceived Exertion scale as a measure of perceived exertion that can be more validly and reliably used with Hong Kong children.

Oxygen Consumption, Heart Rate, Rating of Perceived Exertion, and Systolic Blood Pressure with Water Treadmill Walking

2008 ◽  
Vol 16 (1) ◽  
pp. 14-23 ◽  
Author(s):  
David R. Dolbow ◽  
Richard S. Farley ◽  
Jwa K. Kim ◽  
Jennifer L. Caputo
Keyword(s):  
Blood Pressure ◽  
Older Adults ◽  
Heart Rate ◽  
Oxygen Consumption ◽  
Systolic Blood Pressure ◽  
Perceived Exertion ◽  
Cardiovascular Responses ◽  
Treadmill Walking ◽  
Rating Of Perceived Exertion ◽  
Water Treadmill

The purpose of this study was to examine the cardiovascular responses to water treadmill walking at 2.0 mph (3.2 km/hr), 2.5 mph (4.0 km/hr), and 3.0 mph (4.8 km/hr) in older adults. Responses to water treadmill walking in 92 °F (33 °C) water were compared with responses to land treadmill walking at 70 °F (21 °C) ambient temperature. After an accommodation period, participants performed 5-min bouts of walking at each speed on 2 occasions. Oxygen consumption (VO2), heart rate (HR), systolic blood pressure (SBP), and rating of perceived exertion (RPE) were significantly higher during therapeutic water treadmill walking than during land treadmill walking. Furthermore, VO2, HR, and RPE measures significantly increased with each speed increase during both land and water treadmill walking. SBP significantly increased with each speed during water treadmill walking but not land treadmill walking. Thus, it is imperative to monitor HR and blood pressure for safety during this mode of activity for older adults.

scholarly journals Evaluación de la capacidad cardiorrespiratoria en estudiantes de entre 12 y 19 años de Cádiz (España): desarrollo de una calculadora para estimar el esfuerzo y salud cardiovascular (Cardiorespiratory fitness assessment in students between 12 and 19 years old from Cádiz (Spain): development of a calculator for estimating the effort and cardiovascular health)

2020 ◽  
Vol 15 (46) ◽  
Keyword(s):  
Heart Rate ◽  
Cardiorespiratory Fitness ◽  
Perceived Exertion ◽  
Cardiovascular Health ◽  
School Setting ◽  
Rating Of Perceived Exertion ◽  
Physical Education Teachers ◽  
Mean Values ◽  
Fitness Assessment ◽  
A Performance

Physical fitness assessment has traditionally been linked to a performance paradigm, which has oriented the grades towards student effectiveness. The present study aims to analyze the cardiorespiratory capacity in adolescents from Cadiz (Spain). In addition this work provides a performance and effort tool to guide formative and shared assessment of cardiorespiratory fitness and to provide methodological guidance for its application in the school setting. Students. A total of 323 students between 12 and 19 years (mean age 14.68; ±1.75), 168 boys (52%) and 155 girls (48%). Cardiorespiratory capacity was assessed by an adaptation of the original 20-meter shuttle run test, which consisted on including music. Participants were monitored with a heart rate monitor (ONrhythm 500) and registered the Borg rating of perceived exertion scale (1-10). Mean values for the variables analyzed were: last completed stage, 5.92 (±2.47); maximum heart rate, 198.02 (±0.71); difference between theoretical and real maximum HR, -0.33 (±11.05); perception of effort, 7.87 (±2.03). Based on the results obtained, a calculator was developed to estimate effort and provide guidance in performance analysis. It is elaborated to be a useful tool for Physical Education teachers and researchers to assess cardiorespiratory fitness, estimate the effort and to analyze the risk of future cardiovascular disease.

scholarly journals Effect of Unaware Clock Manipulation on Pacing Strategy and Performance in Recreational Athletes

2021 ◽  
Vol 11 (17) ◽  
pp. 8062
Author(s):  
Augusto Terra ◽  
Dailson Paulucio ◽  
Marco Machado ◽  
David J. Bishop ◽  
Alexander J. Koch ◽  
...  
Keyword(s):  
Heart Rate ◽  
Oxygen Consumption ◽  
Perceived Exertion ◽  
Important Determinant ◽  
Total Speed ◽  
Recreational Athletes ◽  
Pacing Strategy ◽  
Familiarization Trial ◽  
And Performance ◽  
Made In

It is unclear how athletes regulate their performance prior and during exercise when deceptive methods are applied. Therefore, the aim of this study was to test if time manipulation can influence pacing strategy and running performance. Ten recreationally active subjects were informed they would complete four 60-min time trials only with time feedback. The first session was a familiarization trial (60-min), and in the following three sessions, the time feedback was modified: normal chronometer (NC—60 min.), 10% faster (Faster chronometer—FC—54 min.), and 10% slower (slower chronometer—SC—66 min.). Total distance was different between conditions, while average of total speed, Heart Rate, oxygen consumption, and Rate of Perceived Exertion were similar (p > 0.05). A slow start pacing strategy was adopted in all conditions and did not differ between conditions when averaged across the session; however, when analyzing the first and final 10 min of the session, differences were found between conditions. Finally, the observed time was an important determinant of the regulation of exercise intensity, because, although the pacing strategy adopted in all conditions was regulated according to previous exercise information, adjustments were made in the initial (NC) and final (FC) phases of the trials.

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