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Rate of perceived exertion

Chen-Jan Chiu, Chih-Wen Chi, Hui-Ru Hsieh, Yu-Chuen Huang, Huey-June Wu, Yu-Jen Chen
The aim of this study was to examine the effect of the level-1 Yo-Yo intermittent recovery test (YYIRT1) on polarization of macrophages in young football players.Fourteen male football players (19.9 ± 1.4 years old) were enrolled in this study. YYIRT1 was performed with 20-meter shuttle runs at increasing speeds and 10-second active recovery in a 5-meter distance between runs till exhaustion. Fasting blood samples were collected before and immediately after YYIRT1. Analysis for macrophage polarization by flow cytometry, reactive oxygen species (ROS) by flow cytometry, biochemical parameters by chemical reactions, and serum cytokines by ELISA were performed...
October 2018: Medicine (Baltimore)
Alireza Esmaeili, William G Hopkins, Andrew M Stewart, George P Elias, Brendan H Lazarus, Robert J Aughey
Aim: Relationships between athlete monitoring-derived variables and injury risk have been investigated predominantly in isolation. The aim of this study was to evaluate the individual and combined effects of multiple factors on the risk of soft-tissue non-contact injuries in elite team sport athletes. Methods: Fifty-five elite Australian footballers were prospectively monitored over two consecutive seasons. Internal and external training load was quantified using the session rating of perceived exertion and GPS/accelerometry, respectively...
2018: Frontiers in Physiology
Brendan R Scott, Jeremiah J Peiffer, Hannah J Thomas, Kieran J Marston, Keith D Hill
Introduction: Blood flow restriction (BFR) during low-load resistance exercise increases muscle size similarly to high-load training, and may be an alternative to lifting heavy weights for older people at risk of sarcopenia. However, few studies have addressed the safety of such exercise in older people, or whether this is impacted by the actual exercises performed during training. This study aimed to compare the acute hemodynamic and perceptual responses during low-load BFR exercise to unrestricted low-load and high-load exercise in older women, and to determine whether these responses depend on the type of exercise performed...
2018: Frontiers in Physiology
Said El-Ashker, Helmi Chaabene, Yassine Negra, Olaf Prieske, Urs Granacher
This study aimed at examining physiological responses (i.e., oxygen uptake [VO₂] and heart rate [HR]) to a semi-contact 3 × 3-min format, amateur boxing combat simulation in elite level male boxers. Eleven boxers aged 21.4 ± 2.1 years (body height 173.4 ± 3.7, body mass 74.9 ± 8.6 kg, body fat 12.1 ± 1.9, training experience 5.7 ± 1.3 years) volunteered to participate in this study. They performed a maximal graded aerobic test on a motor-driven treadmill to determine maximum oxygen uptake (VO2max ), oxygen uptake (VO2AT ) and heart rate (HRAT ) at the anaerobic threshold, and maximal heart rate (HRmax )...
October 15, 2018: Sports
Diana Medeiros Andrade, Gabriela Fernandes, Renato Miranda, Danilo Reis Coimbra, Maurício G Bara Filho
Andrade, DM, Fernandes, G, Miranda, R, Reis Coimbra, D, and Bara Filho, MG. Training load and recovery in volleyball during a competitive season. J Strength Cond Res XX(X): 000-000, 2018-The objective of this study was to analyze the training load (TL) and recovery status (RS) of a volleyball team in different periods of the season. Fifteen male athletes participated in the study. Training load was quantified through the rate of perceived exertion of session. The total weekly TL of the preparatory period (PP), competitive period I (CPI), and competitive period II (CPII) was calculated...
October 12, 2018: Journal of Strength and Conditioning Research
Dulce H Gomez, James R Bagley, Nicole Bolter, Marialice Kern, C Matthew Lee
OBJECTIVE: The aim of this study was to investigate the exercise intensity of active virtual reality games (AVRGs) by oxygen consumption (VO2 ), heart rate (HR), and rating of perceived exertion (RPE). A second aim was to compare the AVRG intensities to current American College of Sports Medicine exercise guidelines using metabolic equivalents (METs) and %VO2 reserve (%VO2 R). MATERIALS & METHODS: HR, VO2 , and RPE were collected on participants (N = 41; age: 25...
October 2018: Games for Health
Renan Felipe Hartmann Nunes, Rob Duffield, Fábio Yuzo Nakamura, Ewertton de Souza Bezerra, Raphael Luiz Sakugawa, Irineu Loturco, Franciane Bobinski, Daniel Fernandes Martins, Luiz Guilherme Antonacci Guglielmo
We investigated the effect of post-match cold-water immersion (CWI) on markers of muscle damage, neuromuscular fatigue and perceptual responses within 72 h after a Rugby match. Twenty-two professional male Rugby players were randomized into CWI (10°C/10min; n=11) or Control (CON:30min seated; n=11) groups. Activity profile from Global Positioning Satellite systems and post-match rating of perceived exertion were measured to determined match load. Biochemical (tumor necrosis factor alpha [TNF-α], interleukin-6 [IL-6]), neuromuscular performance (squat and countermovement jump [SJ; CMJ], peak power output [PPO], rate of force development [RFD], stiffness, 10- and 30-m sprint time and perceptual markers (soreness, perceived recovery) were obtained at pre, post, 30 min, 24, 48 and 72 h post-match...
October 15, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Larissa Neves Pavin, Anthony S Leicht, Samuel Valencia Gimenes, Bruno Victor Corrêa da Silva, Mário Antônio de Moura Simim, Moacir Marocolo, Gustavo Ribeiro da Mota
Soccer-induced fatigue and performance are different between the sexes. The effect of compression stockings (CS) use on fatigue during the soccer match in females is unknown. Thus, we evaluated the impact of CS use during a female soccer match on match-induced fatigue. Twenty soccer players were randomly allocated to two groups (n = 10 for each group): CS and Control (regular socks), and equally distributed within two teams. At rest (baseline 48-h before the match) and immediately post-match, we assessed agility T-test, standing heel-rise test and YoYo Intermittent Endurance Test level 2 (YoYoIE2) performance...
October 14, 2018: Research in Sports Medicine
David Macutkiewicz, Caroline Sunderland
Team sports, such as field hockey, incorporate high-intensity repeated sprints, interspersed with low-intensity running, which can result in acidosis. The aim of the present study was to examine the effect of acute sodium bicarbonate (SB) supplementation on team sport running and skill performance. Eight elite female field hockey players (age 23 ± 5 years, body mass 62.6 ± 8.4 kg, height 1.66 ± 0.05 m) completed three Field Hockey Skill Tests (FHST) interspersed with four sets of the Loughborough Intermittent Shuttle Test (LIST)...
September 2018: Physiological Reports
Shaun Porter, Noah D Silverberg, Naznin Virji-Babul
OBJECTIVES: To examine the neurophysiological correlates and brain network organization underlying physical and cognitive exertion in active young adults. DESIGN: Repeated measures. METHODS: Thirteen healthy adults completed three exertion tasks in a counterbalanced order: a graded working memory task (anti-saccade and serial addition task (ASAT)), a graded exercise task (cycling on a stationary bicycle) (EX) and a combined graded working memory and exercise task (ASAT+EX)...
October 3, 2018: Journal of Science and Medicine in Sport
Walter Staiano, Andrea Bosio, Gaia Piazza, Marco Romagnoli, Pietro L Invernizzi
BACKGROUND: The present study aimed to assess the impact of 60 min of a cognitive demanding task inducing mental fatigue (Stroop) on kayaking performance in young elite athletes. The second objective was to elucidate the effect of mental fatigue on performance in a population of young under-17 elite athletes of national. METHODS: Thirteen under-17 elite kayakers completed 60 min of an incongruent Stroop color-word test, or the equivalent time in a control condition in a cross-over study design...
October 10, 2018: Journal of Sports Medicine and Physical Fitness
Hagit Shoffel-Havakuk, Katherine L Marks, Mariah Morton, Michael M Johns, Edie R Hapner
OBJECTIVES: To establish the validity of the OMNI Vocal Effort Scale (OMNI-VES) for resistance exercise, a single-question pictorial scale, in voice-related perceived exertion. Additionally, the study aimed to assess the role of the OMNI-VES as an outcome measurement in the treatment of adductor spasmodic dysphonia (ADSD). METHODS: A prospective validation study was conducted on 226 participants. The case group was comprised of 178 patients receiving botulinum toxin (BTX) injections for ADSD and 48 controls without a voice disorder...
October 12, 2018: Laryngoscope
S Chacaroun, I Vega-Escamilla Y Gonzalez, P Flore, S Doutreleau, Samuel Verges
PURPOSE: The aim of this study was to assess the acute cardiorespiratory as well as muscle and cerebral tissue oxygenation responses to submaximal constant-load (CL) and high-intensity interval (HII) cycling exercise performed in normoxia and in hypoxia at similar intensity, reproducing whole-body endurance exercise training sessions as performed in sedentary and clinical populations. METHODS: Healthy subjects performed two CL (30 min, 75% of maximal heart rate, n = 12) and two HII (15 times 1-min high-intensity exercise-1-min passive recovery, n = 12) cycling exercise sessions in normoxia and in hypoxia [mean arterial oxygen saturation 76 ± 1% (clamped) during CL and 77 ± 5% (inspiratory oxygen fraction 0...
October 12, 2018: European Journal of Applied Physiology
Michael A Rosen, Aaron S Dietz, Nam Lee, I-Jeng Wang, Jared Markowitz, Rhonda M Wyskiel, Ting Yang, Carey E Priebe, Adam Sapirstein, Ayse P Gurses, Peter J Pronovost
OBJECTIVE: To establish the validity of sensor-based measures of work processes for predicting perceived mental and physical exertion of critical care nurses. MATERIALS AND METHODS: Repeated measures mixed-methods study in a surgical intensive care unit. Wearable and environmental sensors captured work process data. Nurses rated their mental (ME) and physical exertion (PE) for each four-hour block, and recorded patient and staffing-level workload factors. Shift was the grouping variable in multilevel modeling where sensor-based measures were used to predict nursing perceptions of exertion...
2018: PloS One
Carlos Balsalobre-Fernández, Mario Muñoz-López, David Marchante, Amador García-Ramos
Balsalobre-Fernández, C, Muñoz-López, M, Marchante, D, and García-Ramos, A. Repetitions in reserve and rate of perceived exertion increase the prediction capabilities of the load-velocity relationship. J Strength Cond Res XX(X): 000-000, 2018-This study aimed to (a) analyze the relationships between relative load (i.e., %1 repetition maximum; 1RM) and movement velocity, repetitions in reserve (RIR) and rate of perceived exertion (RPE) in competitive powerlifters and (b) examine whether a multiple linear regression model with the movement velocity, RIR, and RPE as predictor variables could improve the goodness of fit of the load-velocity relationship...
October 10, 2018: Journal of Strength and Conditioning Research
Darren L Richardson, Michael J Duncan, Alfonso Jimenez, Victoria M Jones, Paul M Juris, Neil D Clarke
The aim of the present study was to determine if workload matched, high-velocity (HVE) and low-velocity (LVE) resistance exercise protocols, elicit differing acute physiological responses in older adults. Ten older adults completed three sets of eight exercises on six separate occasions (three HVE and three LVE sessions). Systolic blood pressure, diastolic blood pressure and blood lactate were measured pre- and post-exercise, heart rate was measured before exercise and following each set of each exercise. Finally, a rating of perceived exertion was measured following each set of each exercise...
September 2018: European Journal of Ageing
Hendrik Mugele, Ashley Plummer, Omar Baritello, Maggie Towe, Pia Brecht, Frank Mayer
Competitive runners will occasionally undergo exercise in a laboratory setting to obtain predictive and prescriptive information regarding their performance. The present research aimed to assess whether the physiological demands of lab-based treadmill running (TM) can simulate that of over-ground (OG) running using a commonly used protocol. Fifteen healthy volunteers with a weekly mileage of ≥ 20 km over the past 6 months and treadmill experience participated in this cross-sectional study. Two stepwise incremental tests until volitional exhaustion was performed in a fixed order within one week in an Outpatient Clinic research laboratory and outdoor athletic track...
2018: PloS One
Clevin Rashmi Rebello, Prasad Budri Kallingappa, Preethi G Hegde
Objectives: The objective is to study the extent of perceived stress among 1st -year medical students using the Perceived Stress Scale-14 (PSS-14) and its association with sleep quality as assessed by the Pittsburgh Sleep Quality Index (PSQI) and attributed stressors. Materials and Methods: A cross-sectional study was conducted of 121 1st -year medical students at Karwar Institute of Medical Sciences, Karwar, Karnataka, India. The extent of their stress was assessed using the PSS-14 and their sleep quality was assessed using the PSQI...
October 2018: Ci Ji Yi Xue za Zhi, Tzu-chi Medical Journal
Lucas Melo Neves, Carla Silva-Batista, Raquel Marquesini, Telma Fátima da Cunha, Elisa Dimateo, Luciana Nascimento, Acácio Moreira-Neto, Angelo Corrêa de Lima Miliatto, Sheila das Chagas Mendes, Flavia Saad, Jamile Sanches Codogno, Renato Hoffmann Nunes, Raphael Mendes Ritti-Dias, Valeria Juday, Beny Lafer, Carlos Ugrinowitsch
BACKGROUND: Patients with major depression disorder presents increased rates of cognitive decline, reduced hippocampal volume, poor sleep quality, hypertension, obesity, suicidal ideation and behavior, and decreased functionality. Although continuous aerobic exercise (CAE) improves some of the aforementioned symptoms, comorbidities, and conditions, recent studies have suggested that performing aerobic exercise with motor complexity (AEMC) may be more beneficial for cognitive decline, hippocampal volume, and functionality...
October 10, 2018: Trials
Mostafa Yaghoubi, Philip W Fink, Wyatt H Page, Sarah P Shultz
PURPOSE: This study examined differences in lower extremity kinematics and muscle activation patterns between normal weight (NW) and overweight (OW) children during stationary exercises (running in place, frontal kick, and butt kick) at submaximal intensity. METHODS: Healthy children (aged 10-13 y) were stratified into OW (n = 10; body fat percentage: 34.97 [8.60]) and NW (n = 15; body fat percentage: 18.33 [4.87]). Electromyography was recorded for rectus femoris, vastus lateralis, biceps femoris, gastrocnemius, and tibialis anterior...
October 10, 2018: Pediatric Exercise Science
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