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Dajo Sanders, Teun van Erp, Jos J de Koning
PURPOSE: This study provides a retrospective analysis of a large competition database describing the intensity and load demands of professional road cycling races, highlighting the differences between men's and women's races. METHOD: Twenty male and ten female professional cyclists participated in this study. During 4 consecutive years, heart rate (HR), rating of perceived exertion (RPE) and power output (PO) data were collected during both male (n = 3024) and female (n = 667) professional races...
August 6, 2018: International Journal of Sports Physiology and Performance
Stuart R Graham, Stuart Cormack, Gaynor Parfitt, Roger Eston
PURPOSE: To assess and compare the validity of internal and external Australian football (AF) training-load measures for predicting preseason variation of match-play exercise intensity (MEI sim/min) using a variable dose-response model. METHODS: Twenty-on professional male AF players completed an 18-wk preseason macrocycle. Preseason internal training load was quantified using session RPE (sRPE) and external load from satellite and accelerometer data. Using a training-impulse (TRIMPs) calculation, external load expressed in arbitrary units (a...
August 6, 2018: International Journal of Sports Physiology and Performance
Catriona Lockhart, Brendan R Scott, Bradley Thoseby, Ben J Dascombe
Lockhart, C, Scott, BR, Thoseby, B, and Dascombe, BJ. Acute effects of interset rest duration on physiological and perceptual responses to resistance exercise in hypoxia. J Strength Cond Res XX(X): 000-000, 2018-This study aimed to determine whether manipulating interset rest periods during resistance training in hypoxia impacts on physiological and perceptual responses to exercise. Twelve healthy males completed 1 repetition maximum (1RM) testing for the bilateral leg extension, before completing 4 separate randomized trials comprising 5 × 10 repetitions of leg extensions at 70% 1RM...
July 30, 2018: Journal of Strength and Conditioning Research
Igor de Freitas Cruz, Lucas Adriano Pereira, Ronaldo Kobal, Katia Kitamura, Cristiano Cedra, Irineu Loturco, Cesar Cavinato Cal Abad
The aims of this study were to describe the session rating of perceived exertion (sRPE), total quality recovery (TQR), and variations in countermovement jump (CMJ) height throughout nine weeks of a competitive period in young female basketball players. In total, 10 young female basketball players (17.2 ± 0.4 years; 71.8 ± 15.0 kg; 177.2 ± 9.5 cm) participated in this study. The sRPE and TQR were assessed in each training session, whereas the CMJ height was assessed prior to the first weekly training session...
2018: PeerJ
Ramires Alsamir Tibana, Nuno Manuel Frade de Sousa, Gabriel Veloso Cunha, Jonato Prestes, Carlos Fett, Tim J Gabbett, Fabrício Azevedo Voltarelli
The aim of this study was to validate the quantification of internal training load (session rating perceived exertion, sRPE) and the effect of recall timing of sRPE during high-intensity functional training (HIFT) sessions. Thirteen male HIFT practitioners (age 27.2 ± 33 years, height 177.1 ± 4.0 cm, body mass 81.1 ± 9.0 kg) were monitored during two common HIFT training sessions: Fight Gone Bad (FGB) and Fran. The Edwards summated heart-rate-zone method was used as a reference measure of internal training load...
July 23, 2018: Sports
Roberto Baldassarre, Marco Bonifazi, Romain Meeusen, Maria Francesca Piacentini
PURPOSE: The 10-km open water swimming race is an endurance event that takes place in lakes, rivers or sea and is an Olympic event since 2008. The aim of the present brief report is to describe training volume and intensity distribution of elite open-water swimmers (OW-swimmers) during the 2016 Olympic season, verifying if, in order to maximize performance, most of the training would be performed at low intensities. METHODS: Eight elite Italian OW-swimmers (3 males and 5 females; 25±2-yrs, 1...
July 24, 2018: International Journal of Sports Physiology and Performance
Robert Collette, Michael Kellmann, Alexander Ferrauti, Tim Meyer, Mark Pfeiffer
Background: The relation between training load, especially internal load, and the recovery-stress state is of central importance for avoiding negative adaptations in high-performance sports like swimming. The aim of this study was to analyze the individual time-delayed linear effect relationship between training load and recovery-stress state with single case time series methods and to monitor the acute recovery-stress state of high-performance swimmers in an economical and multidimensional manner over a macro cycle...
2018: Frontiers in Physiology
Alireza Rabbani, Mohammad Karami Baseri, Jalil Reisi, Filipe Manuel Clemente, Mehdi Kargarfard
The aims of this study were a) to examine within-group changes of wellness and heart rate variability measures and b) to compare their sensitivity to a congested match schedule in collegiate soccer players (n = 8). Wellness (Hooper index and its subsets) and heart rate variability (Ln rMSSD, SDNN) measures were assessed after selected low-load (training sessions) and high-load (a congested match schedule) phases. Session rating of perceived exertion (sRPE) was computed for training and match sessions. A very likely large difference in accumulated sRPE was observed between low-load and high-load phases (+148...
October 1, 2018: Physiology & Behavior
Nicholas E Dalton-Barron, Shaun J McLaren, Christopher J Black, Michael Gray, Ben Jones, Gregory Roe
Dalton-Barron, NE, McLaren, SJ, Black, CJ, Gray, M, Jones, B, and Roe, G. Identifying contextual influences on training load: an example in professional rugby union. J Strength Cond Res XX(X): 000-000, 2018-We aimed to investigate the contextual factors influencing training load (TL), as determined by session rating of perceived exertion (sRPE-TL), accumulated within a match-to-match microcycle in rugby union players. Session rating of perceived exertion-TL data were collected daily from 35 professional rugby union players from the same team in the English Championship over the course of an in-season period...
July 2, 2018: Journal of Strength and Conditioning Research
Alireza Rabbani, Mehdi Kargarfard, Craig Twist
Rabbani, A, Kargarfard, M, and Twist, C. Fitness monitoring in elite soccer players; group vs. individual analyses. J Strength Cond Res XX(X): 000-000, 2018-The aims of this study were to (a) examine changes in group and individual HR measures during a submaximal warm-up test, and (b) investigate the relationship between accumulated internal training loads and HR changes during an in-season phase among elite soccer players (n = 14). Before and after an in-season phase (24 days), exercise HR (HRex) and HR recovery (HRR) expressed either as the number of beats recovered (HRR60s) or as the mean HR (HRpost1) during 1 minute of recovery were analyzed...
June 14, 2018: Journal of Strength and Conditioning Research
Jeremy A Gentles, Christine L Coniglio, Matthew M Besemer, Joshua M Morgan, Michael T Mahnken
The purpose of this study was to use GPS, accelerometers, and session rating of perceived exertion (sRPE) to examine the demands of a Division II women's soccer team. Data was collected on 25 collegiate Division II women's soccer players over an entire regular season (17 matches and 24 practices). ZephyrTM BioHarnesses (BHs) were used to collect tri-axial acceleration information and GPS derived variables for all matches and practices. Acceleration data was used to calculate Impulse Load, a measure of mechanical load that includes only locomotor related accelerations...
February 23, 2018: Sports
Callum J McCaskie, Warren B Young, Brendan B Fahrner, Marc Sim
PURPOSE: To examine the association between pre-season training variables and subsequent in-season performance in an elite Australian football team. METHODS: Data from forty-one elite male Australian footballers (mean±SD: age=23.4±3.1y; height=188.4±7.1cm; mass=86.7±7.9kg) was collected from one Australian Football League (AFL) club. Pre-season training data (external load, internal load, fitness testing and session participation) were collected across the 17-week pre-season phase (6-weeks pre-Christmas, 11-weeks post-Christmas)...
June 12, 2018: International Journal of Sports Physiology and Performance
Barthelemy Delecroix, Alan McCall, Brian Dawson, Serge Berthoin, Gregory Dupont
PURPOSE: The aim of this study was to analyse the relationship between absolute and acute:chronic workload ratios and non-contact injury incidence in professional football players and to assess their predictive ability. METHODS: Elite football players (n = 130) from five teams competing in European domestic and confederation level competitions were followed during one full competitive season. Non-contact injuries were recorded and using session rate of perceived exertion (s-RPE) internal absolute workload and acute:chronic (A:C) workload ratios (4-weeks, 3-weeks, 2-weeks and week-to-week) were calculated using a rolling days method...
June 2, 2018: European Journal of Sport Science
Jordan Stares, Brian Dawson, Peter Peeling, Michael Drew, Jarryd Heasman, Brent Rogalski, Marcus Colby
OBJECTIVES: Examine the influence of rehabilitation training loads on return to play (RTP) time and subsequent injury in elite Australian footballers. DESIGN: Prospective cohort study. METHODS: Internal (sessional rating of perceived exertion: sRPE) and external (distance, sprint distance) workload and lower limb non-contact muscle injury data was collected from 58 players over 5 seasons. Rehabilitation periods were analysed for running workloads and time spent in 3 rehabilitation stages (1: off-legs training, 2: non-football running, 3: group football training) was calculated...
April 10, 2018: Journal of Science and Medicine in Sport
Nick Dobbin, Adrian Gardner, Matt Daniels, Craig Twist
This study investigated changes in body composition in relation to training load determined using RPE and duration (sRPE), and its relationship with physical qualities over a preseason period. Sixteen professional academy players (age = 17.2 ± 0.7 years; stature = 179.9 ± 4.9 cm; body mass = 88.5 ± 10.1 kg) participated in the study. Body composition was assessed before and after each training phase and physical qualities assessed at the start and end of preseason. Across the whole preseason period, skinfold thickness, body fat percentage and fat mass were most likely lower (ES = -0...
May 8, 2018: Journal of Sports Sciences
Padraic J Phibbs, Ben Jones, Gregory Roe, Dale B Read, Joshua Darrall-Jones, Jonathon Weakley, Andrew Rock, Kevin Till
Phibbs, PJ, Jones, B, Roe, G, Read, DB, Darrall-Jones, J, Weakley, J, Rock, A, and Till, K. Organized chaos in late specialization team sports: weekly training loads of elite adolescent rugby union players. J Strength Cond Res 32(5): 1316-1323, 2018-The aim of this study was to quantify the mean weekly training load (TL) of elite adolescent rugby union players participating in multiple teams and examine the differences between playing positions. Twenty elite male adolescent rugby union players (17.4 ± 0.7 years) were recruited from a regional academy and categorized by playing position: forwards (n = 10) and backs (n = 10)...
May 2018: Journal of Strength and Conditioning Research
Y van der Steen, I Myin-Germeys, M van Nierop, M Ten Have, R de Graaf, S van Dorsselaer, J van Os, R van Winkel
AIMS: Self-reported psychotic experiences (SRPE) by individuals from the general population are often unconfirmed by clinical interview and referred to as 'false-positive' (FP) SRPE. FP SRPE have been suggested to represent the mildest form of risk along the extended psychosis continuum. However, little is known about their (clinical) outcome and evolution over time. Aims of this study were to prospectively examine, in individuals with FP SRPE, (1) the prevalence of remission, persistence and transition to validated PE at 3-year follow-up; (2) potential baseline psychopathological and psychosocial predictors of persistence of FP SRPE and transition to validated PE; and (3) whether those with persistent FP SRPE and validated PE already differed on psychopathology and psychosocial factors at baseline...
April 16, 2018: Epidemiology and Psychiatric Sciences
Shaun J McLaren, Andrew Smith, Jonathan D Bartlett, Iain R Spears, Matthew Weston
We aimed to compare differentiated training loads (TL) between fitness responders and non-responders to an eight-week pre-season training period in a squad of thirty-five professional rugby union players. Differential TL were calculated by multiplying player's perceptions of breathlessness (sRPE-B) and leg muscle exertion (sRPE-L) with training duration for each completed session. Performance-based fitness measures included the Yo-Yo Intermittent Recovery Test Level 1 (YYIRTL1), 10-, 20-, and 30-m linear sprint times, countermovement jump height (CMJ) and predicted one-repetition maximum back squat (P1RM Squat)...
April 9, 2018: Journal of Sports Sciences
Dan Weaving, Nicholas E Dalton, Christopher Black, Joshua Darrall-Jones, Padraic J Phibbs, Michael Gray, Ben Jones, Gregory A B Roe
PURPOSE: The study aimed to identify which combination of external and internal training load (TL) metrics capture similar or unique information for individual professional players during skills training in rugby union using principal component analysis (PCA). METHOD: TL data were collected from twenty-one male professional rugby union players across a competitive season. This included PlayerLoad™, total distance (TD), and individualised high-speed distance (HSD; >61% maximal velocity; all external TL) obtained from a micro-technology device worn by each player (Optimeye X4, Catapult Innovations, Melbourne, Australia) and the session-rating of perceived exertion (sRPE; internal TL)...
March 27, 2018: International Journal of Sports Physiology and Performance
João B Ferreira-Júnior, Ana P M Guttierres, Irismar G A Encarnação, Jorge R P Lima, Diego A Borba, Eduardo D S Freitas, Michael G Bemben, Carlos A Vieira, Martim Bottaro
This study compared the effects of different conditioning activities on the 100-m dash performance of 11 male, high school track and field athletes (mean age = 16.3; SD = 1.2 years). Participants performed a 100-m dash seven minutes after each of four randomized conditioning protocols, with each condition and 100-m dash separated by 3-10 days. The conditioning protocols were (a) control, no conditioning activity; (b) weighted plyometric, three sets of 10 repetitions of alternate leg bounding with additional load of 10% of the body mass; (c) free sprint, two 20-m sprints; and (d) resisted sprint (RS), two 20-m resisted sprints using an elastic tubing tool...
June 2018: Perceptual and Motor Skills
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