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Rate of perceived exertion

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https://www.readbyqxmd.com/read/30540283/positional-differences-in-gps-outputs-and-perceived-exertion-during-soccer-training-games-and-competition
#1
Will Abbott, Gary Brickley, Nicholas J Smeeton
Abbott, W, Brickley, G, and Smeeton, NJ. Positional differences in GPS outputs and perceived exertion during soccer training games and competition. J Strength Cond Res 32(11): 3222-3231, 2018-Soccer training games are popular training modalities, allowing technical, tactical, and physical aspects to be trained simultaneously. Small (SSGs), medium (MSGs), and large training games (LSGs) elicit differing physical demands. To date, no research has investigated physical and perceived demands of training games on soccer playing positions relative to competitive demands...
November 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30539128/effects-of-backpack-load-and-trekking-poles-on-energy-expenditure-during-field-track-walking
#2
João Paulo Brito, Nuno Garrido, Félix Romero, Adenilson Targino de Araújo Junior, Victor Machado Reis
This study evaluates the effects of the use of backpack load and trekking poles on field track walking energy expenditure. Twenty male volunteer pole walkers (age: 22.70±2.89 years; body mass: 77.90±11.19 kg; height: 1.77±0.06 m; percentage of body fat: 14.6±6.0%) walked at a self-selected pace on a pedestrian field track over a period of more than six months. Each subject was examined at random based on four walking conditions: non-poles and non-load, with poles and non-load, non-poles and with load, with poles and with load...
July 2018: Sports Med Int Open
https://www.readbyqxmd.com/read/30539117/wearing-colored-glasses-can-influence-exercise-performance-and-testosterone-concentration
#3
André M Londe, Moacir Marocolo, Isabela Coelho Marocolo, James Fisher, Octavio Barbosa Neto, Markus Vinicius Campos Souza, Gustavo Ribeiro da Mota
Perception of red color is associated with higher testosterone concentration and better human performance. Thus, we evaluated the acute effects of wearing colored-lens glasses on the YoYo intermittent endurance exercise test 2 (YoYoIE2) performance indicators and testosterone concentration. Ten soccer players performed three YoYoIE2 (counterbalanced crossover) wearing colorless (control), blue- or red-lensed glasses (2-4 days of rest in between). YoYoIE2 performance did not differ among the trials ( p >0...
April 2018: Sports Med Int Open
https://www.readbyqxmd.com/read/30539111/does-metabolic-rate-increase-linearly-with-running-speed-in-all-distance-runners
#4
Matthew E Batliner, Shalaya Kipp, Alena M Grabowski, Rodger Kram, William C Byrnes
Running economy (oxygen uptake or metabolic rate for running at a submaximal speed) is one of the key determinants of distance running performance. Previous studies reported linear relationships between oxygen uptake or metabolic rate and speed, and an invariant cost of transport across speed. We quantified oxygen uptake, metabolic rate, and cost of transport in 10 average and 10 sub-elite runners. We increased treadmill speed by 0.45 m · s -1 from 1.78 m · s -1 (day 1) and 2.01 m · s -1 (day 2) during each subsequent 4-min stage until reaching a speed that elicited a rating of perceived exertion of 15...
January 2018: Sports Med Int Open
https://www.readbyqxmd.com/read/30536704/body-mass-index-and-parasympathetic-nervous-system-reactivity-and-recovery-following-graded-exercise
#5
Gina M Gerardo, DeWayne P Williams, Michael Kessler, Derek P Spangler, Thomas K Hillecke, Julian F Thayer, Julian Koenig
OBJECTIVES: The present study sought to expand upon prior investigations examining patterns of vagally mediated heart rate variability (vmHRV) and perceived exertion as a function of body mass index (BMI) in response to and recovery from exercise. METHODS: Participants underwent a resting (baseline) period, followed by a graded exercise protocol on an ergometer with ascending difficulty stages, and finally another resting (recovery) period. Individuals were stratified into three BMI groups: low, moderate, and high...
December 10, 2018: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/30534548/development-of-a-self-determination-theory-based-physical-activity-intervention-for-aged-care-workers-protocol-for-the-activity-for-well-being-program
#6
Merilyn Lock, Dannielle Post, James Dollman, Gaynor Parfitt
Despite the well-established benefits of regular participation in physical activity, many Australians still fail to maintain sufficient levels. More self-determined types of motivation and more positive affect during activity have been found to be associated with the maintenance of physical activity behaviour over time. Need-supportive approaches to physical activity behaviour change have previously been shown to improve quality of motivation and psychological well-being. This paper outlines the development of a need-supportive, person-centred physical activity program for frontline aged-care workers...
2018: Frontiers in Public Health
https://www.readbyqxmd.com/read/30534084/short-term-modifications-of-postural-balance-control-in-young-healthy-subjects-after-moderate-aquatic-and-land-treadmill-running
#7
Alex Rizzato, Gerardo Bosco, Michael Benazzato, Antonio Paoli, Giulia Zorzetto, Attilio Carraro, Giuseppe Marcolin
Postural balance control can be altered by land treadmill (LTM) running. This impairment seems to be related to a disturbance of vestibular and visual information. However, no studies are available on aquatic treadmill (ATM) running. The aim of the present study was to investigate the effect of running at moderate intensity over ATM and LTM on the postural balance control both with opened (OE) and closed (CE) eyes. Center of pressure (CoP) trajectory of 20 healthy subjects was collected on a dynamometric platform before and after a 20-min-long running on ATM and LTM at the same rate of perceived exertion (Borg's scale: 3/10)...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/30531291/acute-high-intensity-interval-exercise-in-multiple-sclerosis-with-mobility-disability
#8
Elizabeth A Hubbard, Robert W Motl, Bo Fernhall
INTRODUCTION: Multiple sclerosis(MS) is an immune-mediated, neurological disease that results in physiological deconditioning with increasing disability. High-intensity interval training exercise(HIIT) has induced significant improvements in physiological conditioning in healthy and clinical populations, and might be appropriate for persons with MS who have mobility disability. The feasibility and acute effects of HIIT using recumbent stepping in persons with MS who have mobility disability are relatively unknown...
December 7, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/30529511/in-season-training-load-quantification-of-one-two-and-three-game-week-schedules-in-a-top-european-professional-soccer-team
#9
Rafael Oliveira, João Brito, Alexandre Martins, Bruno Mendes, Francisco Calvete, Sandro Carriço, Ricardo Ferraz, Mário Marques
Top European soccer teams that play in UEFA competitions often participate in one, two- or three-games per week. Therefore, it is necessary to understand the variations in training load (TL) according to each team's competitive schedule. The aim of this study was to quantify internal and external TLs within five microcycles: M4 and M5 - one-game weeks; M1 and M3 - two-game weeks; M2 - three-game week). The sample consisted of thirteen elite soccer players. A global positioning system (GPS) was used to measure the total distance covered and distances of different exercise training zones (1-5), the session ratings of perceived exertion (s-RPE) scores and the amount of creatine kinase (CK) created during daily training sessions for the 2015-2016 in-season period...
December 6, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/30529339/exercise-as-a-reward-self-paced-exercise-perception-and-delay-discounting-in-comparison-with-food-and-money
#10
Tamam A Albelwi, Robert D Rogers, Hans-Peter Kubis
Exercise is an important health behavior. Expressed reasons for participation are often delayed outcomes i.e. health threats and benefits, but also enjoyment. However, we do not know how people evaluate exercise as a reward. The value of rewards diminish the longer we have to wait for them and the discounting effect can undermine decision-making. Here, we investigated delay-discounting of exercise perception and its valuation with time delays; we conducted self-paced exercise sessions on treadmill and compared the discounting rates of exercise (kex ) with those of established rewards of food (kfo ) and money (km )...
December 4, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/30529027/comparison-of-maximum-oxygen-uptake-and-rating-perceived-exertion-in-woman-s-kabaddi-athletes-without-breathy-voice-to-severe-breathy-voice
#11
Samaneh Ebrahimi, Mandana Gholami
OBJECTIVE: There is limited research on voice problems of athletes, especially Kabaddi athletes who use their voice during Kabaddi exercises and may damage their vocal folds and impair their voice quality. The present study aimed to compare maximum oxygen uptake (VO2 max) and rating perceived exertion (RPE) in Woman's Kabaddi athletes without breathy voice (BV) to severe BV. MATERIALS AND METHODS: Seventy woman's Kabaddi athletes (mean age of 20.5 ± 2.7 years, height of 163 ± 3...
December 7, 2018: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/30513903/the-effect-of-mental-fatigue-on-cognitive-and-aerobic-performance-in-adolescent-active-endurance-athletes-insights-from-a-randomized-counterbalanced-cross-over-trial
#12
Maamer Slimani, Hela Znazen, Nicola Luigi Bragazzi, Mohamed Sami Zguira, David Tod
The aim of this randomized counterbalanced, 2 × 2 cross-over study was to investigate the effects of mental fatigue on cognitive and aerobic performance in adolescent active endurance athletes. Ten active male endurance athletes (age = 16 ± 1.05 years, height = 1.62 ± 0.54 m, body mass = 55.5 ± 4.2 kg) were familiarized to all experimental procedures on day 1. On days 2 and 3, participants provided a rating of mental fatigue before and after completing a 30 min Stroop test that measures selective attention capacity and skills and their processing speed ability (mentally fatigued condition), or a 30 min control condition in a randomized counterbalanced order...
December 3, 2018: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/30507731/effects-of-personal-protective-equipment-on-metabolism-and-performance-during-an-occupational-physical-ability-test-for-federal-highway-police-officers
#13
Eduardo Frio Marins, Leo Cabistany, Charles Farias, Jay Dawes, Fabrício Boscolo Del Vecchio
Marins, EF, Cabistany, L, Farias, CB, Dawes, J, and Del Vecchio, FB. Effects of personal protective equipment on metabolism and performance during an Occupational Physical Ability Test for Federal Highway Police officers. J Strength Cond Res XX(X): 000-000, 2018-Federal Highway Police (FHP) officers perform their duties while wearing personal protective equipment (PPE). Given the need for officers to wear PPE, it is important to understand the effects this additional load can have on occupational performance...
November 29, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30507730/pole-dancing-for-fitness-the-physiological-and-metabolic-demand-of-a-60-minute-class
#14
Joanna C Nicholas, Kirsty A McDonald, Peter Peeling, Ben Jackson, James A Dimmock, Jacqueline A Alderson, Cyril J Donnelly
Nicholas, JC, McDonald, KA, Peeling, P, Jackson, B, Dimmock, JA, Alderson, JA, and Donnelly, CJ. Pole dancing for fitness: The physiological and metabolic demand of a 60-minute class. J Strength Cond Res XX(X): 000-000, 2018-Little is understood about the acute physiological or metabolic demand of pole dancing classes. As such, the aims of this study were to quantify the demands of a standardized recreational pole dancing class, classifying outcomes according to American College of Sports Medicine (ACSM) exercise-intensity guidelines, and to explore differences in physiological and metabolic measures between skill- and routine-based class components...
November 29, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30507598/effects-of-exoskeleton-use-on-movement-kinematics-during-performance-of-common-work-tasks-a-case-study
#15
Jan M Hondzinski, Laura Ikuma, Marcio de Queiroz, Chao Wang
BACKGROUND: An exoskeleton may assist performance of basic work-related tasks. Its application should not alter user kinematics, which compromise user safety. OBJECTIVE: This case study was used to assess whether people wearing a lower-body K-SRDTM exoskeleton could complete common work tasks without altering kinematics that may increase injury risk. METHODS: Three males performed three tasks: kneeling and standing (kneel), lifting and lowering a weighted box floor-to-waist (lift), and stair-climbing with a weighted box (climb), all repeated with and without exoskeleton use (EXO, NONE)...
November 26, 2018: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/30496944/physiological-kinematic-and-electromyographic-responses-to-kinesiology-type-patella-tape-in-elite-cyclists
#16
Kim Hébert-Losier, Ngieng Siew Yin, C Martyn Beaven, Chris Chow Li Tee, Jim Richards
Kinesiology-type tape (KTT) has become popular in sports for injury prevention, rehabilitation, and performance enhancement. Many cyclists use patella KTT; however, its benefits remain unclear, especially in uninjured elite cyclists. We used an integrated approach to investigate acute physiological, kinematic, and electromyographic responses to patella KTT in twelve national-level male cyclists. Cyclists completed four, 4-minute submaximal efforts on an ergometer at 100 and 200 W with and without patella KTT...
November 19, 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/30496536/the-effect-of-body-weight-support-on-energy-expenditure-in-an-individual-with-high-level-lower-extremity-amputation
#17
Carol A Miller, Dawn M Hayes, Bailey E Brooks, Katie Y Sloan, Phillip G Sloan
Background: High-level lower extremity amputation (HLLEA) has significant impact on an individual's ability to ambulate and maintain cardiovascular fitness for extended periods of time. Objective: The purpose of this study was to evaluate whether body weight support (BWS) would improve energy efficiency in an individual with HLLEA in order to achieve appropriate target cardiovascular intensity for aerobic training. Design: This is an exploratory single-subject study...
November 28, 2018: Physical Therapy
https://www.readbyqxmd.com/read/30496024/cardiorespiratory-and-perceptual-responses-of-two-interval-training-and-a-continuous-training-protocol-in-healthy-young-men
#18
João Pedro Araújo Naves, Ana Cristina Silva Rebelo, Lucas Raphael Bento E Silva, Maria Sebastiana Silva, Rodrigo Ramirez-Campillo, Robinson Ramírez-Vélez, Paulo Gentil
High Intensity Interval Training (HIIT) can be performed with different effort to rest time-configurations, and this can largely influence training responses. The purpose of the study was to compare the acute physiological responses of two HIIT and one moderate intensity continuous training (MICT) protocol in young men. A randomised cross-over study with 10 men [age, 28.3 ± 5.5years; weight, 77.3 ± 9.3 kg; height, 1.8 ± 0.1 m; peak oxygen consumption (VO2 peak), 44 ± 11 mL.kg-1 .min-1 ]...
November 29, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/30489352/the-effect-of-acute-glutamine-supplementation-on-markers-of-inflammation-and-fatigue-during-consecutive-days-of-simulated-wildland-firefighting
#19
Roberto C Nava, Micah N Zuhl, Terence A Moriarty, Fabiano T Amorim, Kelsey C Bourbeau, Anna M Welch, James J McCormick, Kelli E King, Christine M Mermier
OBJECTIVE: To examine the effect of oral glutamine supplementation on inflammation and fatigue during and after simulated wildland firefighting (WLFF) tasks in hot conditions over two consecutive days. METHODS: Eleven men and women ingested a glutamine supplement or a placebo before and after simulated wildland firefighting in an environmental chamber (38°C, 35% relative humidity). Subjective fatigue, markers of inflammation and cellular stress were measured pre, post and 4h-post exercise on both days...
November 26, 2018: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/30482589/alterations-in-energy-consumption-and-plantar-pressure-distribution-during-walking-in-young-adults-with-patellofemoral-pain-syndrome
#20
Figen Dag, Ugur Dal, Zeynep Altinkaya, Ayhan Taner Erdogan, Emre Ozdemir, Didem Derici Yildirim, Mehmet Colak
OBJECTIVE: The aim of this study was to determine the alterations of walking energy expenditure and plantar pressure distribution in young adults with patellofemoral pain syndrome (PFPS). METHODS: Thirty five individuals (mean age: 21.31 ± 1.76) with PFPS constituted the patient group and forty healthy participants (mean age: 21.40 ± 2.11) the control group. Preferred walking speeds (PWS) were determined on the over ground. Individuals walked on a treadmill for 7 min at their PWS and 30% above PWS and oxygen consumption was recorded via a metabolic analyzer...
October 25, 2018: Acta Orthopaedica et Traumatologica Turcica
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