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Rate of perceived exertion

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https://read.qxmd.com/read/30763596/affective-and-metabolic-responses-to-self-selected-intensity-cycle-exercise-in-young-men
#1
Luke Haile, Fredric L Goss, Joseph L Andreacci, Elizabeth F Nagle, Robert J Robertson
Self-selected intensity exercise has resulted in greater affective responses (AR) compared to prescribed exercise of similar intensity and many individuals self-select intensity at a moderate level identified by metabolic analysis. As such, self-selected intensity may be an effective alternative for exercise prescription designed to promote adherence and result in health and fitness benefits. Self-selected intensity has not been well described for many subject populations and exercise modes. Therefore, the purpose of this investigation was to measure affective and metabolic responses during self-selected intensity cycle exercise in college-aged men...
February 11, 2019: Physiology & Behavior
https://read.qxmd.com/read/30763328/overcoming-the-problem-of-multicollinearity-in-sports-performance-data-a-novel-application-of-partial-least-squares-correlation-analysis
#2
Dan Weaving, Ben Jones, Matt Ireton, Sarah Whitehead, Kevin Till, Clive B Beggs
OBJECTIVES: Professional sporting organisations invest considerable resources collecting and analysing data in order to better understand the factors that influence performance. Recent advances in non-invasive technologies, such as global positioning systems (GPS), mean that large volumes of data are now readily available to coaches and sport scientists. However analysing such data can be challenging, particularly when sample sizes are small and data sets contain multiple highly correlated variables, as is often the case in a sporting context...
2019: PloS One
https://read.qxmd.com/read/30760161/an-exploratory-double-blind-study-of-caffeine-effects-on-performance-and-perceived-exertion-in-judo
#3
Marina Saldanha da Silva Athayde, Rafael L Kons, Daniele Detanico
This study analyzed the effects of caffeine ingestion during judo matches on judo athletes' match-derived performance and perceived exertion responses. We applied a double-blind randomized crossover (caffeine vs. placebo conditions) research design. Twelve male athletes performed three 5-minute matches separated by 15 minutes of passive rest. Immediately after each match, the athletes completed ratings of perceived exertion (RPEs), and one minute before beginning the second and third matches, they provided ratings of perceived recovery (RPRs)...
February 13, 2019: Perceptual and Motor Skills
https://read.qxmd.com/read/30758261/short-term-mediterranean-diet-improves-endurance-exercise-performance-a-randomized-sequence-crossover-trial
#4
Michelle E Baker, Kristen N DeCesare, Abby Johnson, Kathleen S Kress, Cynthia L Inman, Edward P Weiss
OBJECTIVE: Healthful dietary patterns have constituents that are known to improve exercise performance, such as antioxidants, nitrates, and alkalizing effects. However, ergogenic effects of such diets have not been evaluated. We hypothesized that a short-term Mediterranean diet results in better exercise performance, as compared to a typical Western diet. METHODS: Eleven recreationally active women (n = 7) and men (n = 4) (body mass index, 24.6 ± 3...
February 13, 2019: Journal of the American College of Nutrition
https://read.qxmd.com/read/30758165/aerobic-capacity-and-exercise-performance-in-nonalcoholic-fatty-liver-disease
#5
Patrick Austin, Lynn Gerber, James M Paik, Jillian K Price, Carey Escheik, Zobair M Younossi
BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is one of the leading causes of chronic liver disease worldwide. Exercise has proven effective in treating NAFLD, and many clinical initiatives seek to increase uptake of exercise in this population. This study aimed to elucidate the physiological responses of individuals with NAFLD to graded exercise testing. METHODS: 17 participants with presumed NAFLD and 15 without were assessed through symptom-limited, Modified Bruce treadmill testing...
February 12, 2019: Journal of Sports Medicine and Physical Fitness
https://read.qxmd.com/read/30753817/older-adults-elicit-a-single-bout-post-exercise-executive-benefit-across-a-continuum-of-aerobically-supported-metabolic-intensities
#6
Andrea Petrella, Glen Belfry, Matthew Heath
Ten minutes of aerobic or resistance training can 'boost' executive function in older adults. Here, we examined whether the magnitude of the exercise benefit is influenced by exercise intensity. Older adults (N=17: mean age=73 years) completed a volitional test to exhaustion (VO2peak ) via treadmill to determine participant-specific moderate (80% of lactate threshold (LT)), heavy (15% of the difference between LT and VO2peak ) and very-heavy (50% of the difference between LT and VO2peak ) exercise intensities...
February 9, 2019: Brain Research
https://read.qxmd.com/read/30747900/proximity-to-failure-and-total-repetitions-performed-in-a-set-influences-accuracy-of-intraset-repetitions-in-reserve-based-rating-of-perceived-exertion
#7
Michael C Zourdos, Jacob A Goldsmith, Eric R Helms, Cameron Trepeck, Jessica L Halle, Kristin M Mendez, Daniel M Cooke, Michael H Haischer, Colby A Sousa, Alex Klemp, Ryan K Byrnes
Zourdos, MC, Goldsmith, JA, Helms, ER, Trepeck, C, Halle, JL, Mendez, KM, Cooke, DM, Haischer, MH, Sousa, CA, Klemp, A, and Byrnes, RK. Proximity to failure and total repetitions performed in a set influences accuracy of intraset repetitions in reserve-based rating of perceived exertion. J Strength Cond Res XX(X): 000-000, 2019-The aim of this study was to assess the accuracy of predicting repetitions in reserve (RIR) intraset using the RIR-based rating of perceived exertion (RPE) scale. Twenty-five men (age: 25...
February 7, 2019: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/30747267/effects-of-chronic-beetroot-juice-supplementation-on-maximum-oxygen-uptake-velocity-associated-with-maximum-oxygen-uptake-and-peak-velocity-in-recreational-runners-a-double-blinded-randomized-and-crossover-study
#8
Talitha F de Castro, Francisco de Assis Manoel, Diogo H Figueiredo, Diego H Figueiredo, Fabiana Andrade Machado
PURPOSE: This study investigated the effects of chronic 3-day beetroot juice (BRJ) supplementation on maximum oxygen uptake (VO2max ), velocity associated with VO2max (vVO2max ), and peak velocity (Vpeak ) in recreational runners. METHODS: Thirteen male recreational runners (age 28.2 ± 3.0 years, height 176.8 ± 0.1 cm, body mass 74.4 ± 9.5 kg) performed four tests on a treadmill in a randomized, double-blind, crossover design: two maximum incremental tests to determine VO2max and vVO2max, and two tests to determine Vpeak ...
February 12, 2019: European Journal of Applied Physiology
https://read.qxmd.com/read/30744172/the-effects-of-high-intensity-interval-exercise-and-hypoxia-on-cognition-in-sedentary-young-adults
#9
Shengyan Sun, Paul D Loprinzi, Hongwei Guan, Liye Zou, Zhaowei Kong, Yang Hu, Qingde Shi, Jinlei Nie
Background and Objectives : Limited research has evaluated the effects of acute exercise on cognition under different conditions of inspired oxygenation. Thus, the purpose of this study was to examine the effects of high-intensity interval exercise (HIE) under normoxia (inspired fraction of oxygen (FIO₂): 0.209) and moderate hypoxia (FIO₂: 0.154) on cognitive function. Design : A single-blinded cross-over design was used to observe the main effects of exercise and oxygen level, and interaction effects on cognitive task performance...
February 10, 2019: Medicina
https://read.qxmd.com/read/30744103/monitoring-training-load-well-being-heart-rate-variability-and-competitive-performance-of-a-functional-fitness-female-athlete-a-case-study
#10
Ramires Alsamir Tibana, Nuno Manuel Frade de Sousa, Jonato Prestes, Yuri Feito, Carlos Ernesto Ferreira, Fabrício Azevedo Voltarelli
The aim of this case study was to quantify the magnitude of internal load, acute/chronic workload ratio (ACWR), well-being perception, and heart rate variability (HRV) following 38 weeks of functional-fitness training in a female elite athlete. The internal load was obtained with session rating perceived exertion (session-RPE) while the ACWR was calculated by dividing the acute workload by the chronic workload (four-week average). Furthermore, HRV measurements were analyzed via a commercially available smartphone (HRV4training) each morning upon waking whilst in a supine position...
February 9, 2019: Sports
https://read.qxmd.com/read/30741871/comparison-of-physiological-and-perceptual-responses-to-upper-lower-and-whole-body-exercise-in-elite-cross-country-skiers
#11
Vidar Undebakke, Jonathan Berg, Arnt E Tjønna, Øyvind Sandbakk
Undebakke, V, Berg, J, Tjønna, AE, and Sandbakk, Ø. Comparison of physiological and perceptual responses to upper-, lower-, and whole-body exercise in elite cross-country skiers. J Strength Cond Res XX(X): 000-000, 2019-The primary purpose of the present study was to compare physiological and perceptual responses to maximal and submaximal exercise between upper-, lower-, and whole-body exercise modes in elite cross-country (XC) skiers. Twelve elite XC skiers performed 5-7 submaximal 5-minute stages and an incremental test to exhaustion using upper-body poling (UP), running (RUN), and diagonal skiing (DIA), randomized on 3 separate days...
February 6, 2019: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/30741868/beneficial-effects-of-small-sided-games-as-a-conclusive-part-of-warm-up-routines-in-young-elite-handball-players
#12
Antonio Dello Iacono, Andrew D Vigotsky, Lior Laver, Israel Halperin
Iacono, AD, Vigotsky, AD, Laver, L, and Halperin, I. Beneficial effects of small-sided games as a conclusive part of warm-up routines in young elite handball players. J Strength Cond Res XX(X): 000-000, 2019-The aim of this study was to compare the effects of small-sided games (SSGs) and traditional warm-up strategies on the mechanical, physiological, and perceptional responses of handball players. Using a randomized and counterbalanced design, 12 elite male handball players completed a general 8-minute warm-up, which was concluded with an 8-minute section of either specific handball shooting drills or 3 × 2 minutes of 3 vs...
February 6, 2019: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/30741860/effect-of-a-carbohydrate-electrolyte-solution-on-fluid-balance-and-performance-at-a-thermoneutral-environment-in-international-level-fencers
#13
Costas Chryssanthopoulos, Charis Tsolakis, Lindsay Bottoms, Argyris Toubekis, Elias Zacharogiannis, Zoi Pafili, Maria Maridaki
Chryssanthopoulos, C, Tsolakis, C, Bottoms, L, Toubekis, A, Zacharogiannis, E, Pafili, Z, and Maridaki, M. Effect of a carbohydrate-electrolyte solution on fluid balance and performance at a thermoneutral environment in international-level fencers. J Strength Cond Res XX(X): 000-000, 2019-The purpose of the study was to examine a possible effect of a carbohydrate-electrolyte (CHO-E) solution on fluid balance and performance in fencing at a thermoneutral environment. Sixteen fencers performed two 120-minute training sessions separated by 7-14 days under similar environmental conditions (temperature: 20...
February 6, 2019: Journal of Strength and Conditioning Research
https://read.qxmd.com/read/30741747/monitoring-muscle-fatigue-progression-during-dynamic-exercise
#14
Fabrice Rannou, Lars Nybo, Janni Enghave Andersen, Nikolai B Nordsborg
PURPOSE: To develop and validate a novel model for assessment of peripheral fatigue progression during dynamic exercise. METHODS: Seven males and four females (24 ± 3 yrs) completed one-legged knee-extensor exercise at 40% of peak power output for 12 min (40%PPO). Additionally, an exhaustive bout lasting ~ 6 min (84 ± 2% PPO; 59 ± 10 watt) was contrasted to two bouts completed at ± 5% of the target workload. Trials were completed in randomized order. Percutaneous electrical stimulation of m...
February 7, 2019: Medicine and Science in Sports and Exercise
https://read.qxmd.com/read/30738970/does-sex-mediate-the-affective-response-to-high-intensity-interval-exercise
#15
Todd A Astorino, Ailish C Sheard
High intensity interval exercise (HIIE) is identified as an alternative to moderate intensity continuous exercise (MICE) due to its similar effects on outcomes including maximal oxygen uptake and glycemic control. Nevertheless, its widespread implementation in adults is questioned because acute HIIE elicits more aversive responses (negative affective valence) than MICE which may make it impractical to perform long-term. Differences in muscle mass, fiber type, and substrate utilization exist between men and women that alter physiological responses which may cause differences in affective valence, yet the effect of sex on this outcome is unresolved...
February 7, 2019: Physiology & Behavior
https://read.qxmd.com/read/30737600/psychophysiological-stress-response-of-a-paralympic-athlete-during-an-ultra-endurance-event-a-case-study
#16
Pedro Belinchón-deMiguel, Pablo Ruisoto-Palomera, Vicente Javier Clemente-Suárez
Psychophysiological response of athletes with spinal cord injurie has not been reported yet in scientific literature. The aim of this study is to examine the psychophysiological stress response of Paralympic athlete during competitive activities. We collected the following psychophysiological measurements: anxiety-trait, anxiety-state, locus of control, perceived psychological stress, stress-copying style, rate of perceived exertion, perceived muscle pain, body temperature, forced vital capacity, blood oxygen saturation, blood glucose and lactate concentrations, isometric hand strength, cortical arousal, heart rate variability, heart rate and velocities of a female Paralympic spinal cord injured athlete in a 11 h and 44 min ultraendurance mountain event...
February 9, 2019: Journal of Medical Systems
https://read.qxmd.com/read/30737555/capsaicin-supplementation-increases-time-to-exhaustion-in-high-intensity-intermittent-exercise-without-modifying-metabolic-responses-in-physically-active-men
#17
Marcelo Conrado de Freitas, François Billaut, Valéria Leme Gonçalves Panissa, Fabricio Eduardo Rossi, Caique Figueiredo, Erico Chagas Caperuto, Fabio Santos Lira
PURPOSE: The purpose of this study was to investigate the acute effect of capsaicin supplementation on performance and physiological responses during high-intensity intermittent exercise (HIIE). METHOD: Thirteen physically active men (age = 24.4 ± 4.0 years; height = 176.4 ± 6.9 cm; body mass  =  78.7 ± 13.8 kg; running training per week = 3.9 ± 0.9 h) performed an incremental running test to determine peak oxygen uptake ([Formula: see text]) and the speed associated with [Formula: see text] (s[Formula: see text])...
February 8, 2019: European Journal of Applied Physiology
https://read.qxmd.com/read/30736284/effects-of-a-short-term-cycling-interval-session-and-active-recovery-on-non-linear-dynamics-of-cardiac-autonomic-activity-in-endurance-trained-cyclists
#18
Thomas Gronwald, Olaf Hoos, Kuno Hottenrott
Measurement of the non-linear dynamics of physiologic variability in a heart rate time series (HRV) provides new opportunities to monitor cardiac autonomic activity during exercise and recovery periods. Using the Detrended Fluctuation Analysis (DFA) technique to assess correlation properties, the present study examines the influence of exercise intensity and recovery on total variability and complexity in the non-linear dynamics of HRV. Sixteen well-trained cyclists performed interval sessions with active recovery periods...
February 6, 2019: Journal of Clinical Medicine
https://read.qxmd.com/read/30716782/metabolic-costs-during-backward-running-with-body-weight-support
#19
Kenji Masumoto, Kendell Galor, Andrew Craig-Jones, John A Mercer
We investigated metabolic costs, rating of perceived exertion (RPE), stride frequency (SF), and preferred speed (PS) during forward and backward running at different levels of body weight support (BWS). Participants completed forward and backward running on a lower body positive pressure treadmill at their preferred speed for forward and backward running at 0%BWS, 20%BWS, and 50%BWS. Oxygen uptake (V̇O2 ), heart rate (HR), RPE, SF, and PS were measured. HR, RPE, and SF during forward and backward running decreased with increasing BWS (P<0...
February 4, 2019: International Journal of Sports Medicine
https://read.qxmd.com/read/30710825/predictors-of-pain-intensity-and-oswestry-disability-index-in-prolonged-standing-service-workers-with-nonspecific-chronic-low-back-pain-subclassified-as-active-extension-pattern
#20
Ui-Jae Hwang, Oh-Yun Kwon, Sung-Hoon Jung, Sun-Hee Ahn, Hyun-A Kim
BACKGROUND: Because patients with nonspecific chronic low back pain (NSCLBP) are heterogeneous, subgrouping patients with NSCLBP might clarify the research findings. NSCLBP in the direction of extension movement, namely active extension pattern (AEP), is common during prolonged standing. OBJECTIVE: Predictors of pain intensity and dysfunction were determined in prolonged standing service workers (PSSWs) with NSCLBP subclassified as AEP in the motor impairment subgroup...
January 28, 2019: Musculoskeletal Science & Practice
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