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Journal of Strength and Conditioning Research

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https://www.readbyqxmd.com/read/30615009/effects-of-postactivation-potentiation-after-an-eccentric-overload-bout-on-countermovement-jump-and-lower-limb-muscle-strength
#1
Marco Beato, Adam Stiff, Giuseppe Coratella
Beato, M, Stiff, A, and Coratella, G. Effects of postactivation potentiation after an eccentric overload bout on countermovement jump and lower-limb muscle strength. J Strength Cond Res XX(X): 000-000, 2018-This study aimed to evaluate the postactivation potentiation (PAP) effects of an eccentric overload (EOL) exercise on countermovement jump (CMJ) performance and isokinetic lower-limb muscle strength. Eighteen active men (mean ± SD, age 20.2 ± 1.4 years, body mass 71.6 ± 8 kg, and height 178 ± 7 cm) were involved in a randomized, crossover study...
January 4, 2019: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30615008/effects-of-different-fatigue-levels-on-physiological-responses-and-pacing-in-judo-matches
#2
Emerson Franchini, Monica Yuri Takito, Elaine Domingues Alves, Seihati Ary Shiroma, Ursula Ferreira Julio, Clare Humberstone
Franchini, E, Takito, MY, Alves, ED, Shiroma, SA, Julio, UF, and Humberstone, C. Effects of different fatigue levels on physiological responses and pacing in judo matches. J Strength Cond Res XX(X): 000-000, 2018-The objective of this study was to compare athletes' pacing during judo match simulation between different fatigue states. Twelve judo athletes (30.2 ± 3.2 years old, 85.6 ± 10.8 kg, 181.0 ± 5.7 cm, 19 ± 7 years of judo experience) completed three 4-minute matches against the same opponents, at 15-minute intervals in 3 different conditions: after warm-up (Control; C); after a regular training session (totaling 90 minutes); after a high-intensity interval exercise (2 blocks of 10 sets of 20-second all-out uchi-komi, with 10-second interval between sets and 5-minute interval between blocks)...
January 4, 2019: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30615007/resistance-training-performed-to-failure-or-not-to-failure-results-in-similar-total-volume-but-with-different-fatigue-and-discomfort-levels
#3
Wanderson Divino Nilo Dos Santos, Carlos A Vieira, Martim Bottaro, Vitória A Nunes, Rodrigo Ramirez-Campillo, James Steele, James P Fisher, Paulo Gentil
Santos, WDNd, Vieira, CA, Bottaro, M, Nunes, VA, Ramirez-Campillo, R, Steele, J, Fisher, JP, and Gentil, P. Resistance training performed to failure or not to failure results in similar total volume, but with different fatigue and discomfort levels. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to compare the acute response to 4 sets of high velocity of parallel squats performed to momentary failure (MF) or not to momentary failure (NF). Twelve women (24.93 ± 5.04 years) performed MF and NF protocols, in a randomized order with 2-3 interday rest...
January 4, 2019: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30589724/monitoring-training-load-and-perceived-recovery-in-female-basketball-implications-for-training-design
#4
Pierpaolo Sansone, Harald Tschan, Carl Foster, Antonio Tessitore
Sansone, P, Tschan, H, Foster, C, and Tessitore, A. Monitoring training load and perceived recovery in female basketball: Implications for training design. J Strength Cond Res XX(X): 000-000, 2018-This study investigated the relationship between internal training load and perceived recovery of semi-professional female basketball players during the competitive season. Eleven female players were monitored for 14 weeks during the in-season phase. For each event (training and game), data were collected as follows: (a) Total Quality Recovery (TQR) score before the event (TQRpre); (b) session Rating of Perceived Exertion (sRPE) 20 minutes after completion of the event, to calculate training load (s-TL) of the event; and (c) TQR scores 12 (TQRpost12) and 24 hours (TQRpost24) after the event...
December 26, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30589723/muscular-and-neural-contributions-to-postactivation-potentiation
#5
Brian J Wallace, Robert Shapiro, Kelly L Wallace, Mark G Abel, Thorburn B Symons
Wallace, BJ, Shapiro, R, Wallace, KL, Abel, MG, and Symons, TB. Muscular and neural contributions to postactivation potentiation. J Strength Cond Res XX(X): 000-000, 2018-This study's purpose was to explain the relationship between muscle factors (twitch potentiation [TP]) and neural factors (reflex potentiation) contributing to total postactivation potentiation (PAP) that couples these. The tibial nerve of 15 participants were stimulated intermittently for 20 minutes at supramaximal (Mmax) and submaximal (Hmax) intensities on separate days under 2 conditions: (a) rest (Control) and (b) after a 10-second plantarflexion maximum voluntary isometric contraction (MVIC)...
December 26, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30589722/variations-in-verbal-encouragement-modify-isokinetic-performance
#6
Nicole K Rendos, Kysha Harriell, Shayaan Qazi, Rebeca C Regis, Taislaine C Alipio, Joseph F Signorile
Rendos, NK, Harriell, K, Qazi, S, Regis, RC, Alipio, TC, and Signorile, JF. Variations in verbal encouragement modify isokinetic performance. J Strength Cond Res XX(X): 000-000, 2018-Verbal instruction and encouragement are common in exercise testing; however, the verbiage used during exercise testing is rarely controlled despite the likelihood it may affect the participant's performance. Although variations in verbal cuing based on rate and intensity have been examined during isometric contractions, they have not been examined during isokinetic testing, which is a standardized assessment of muscle performance in athletic, rehabilitation, and research settings...
December 26, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30570512/using-load-velocity-relationships-to-quantify-training-induced-fatigue
#7
Liam J Hughes, Harry G Banyard, Alasdair R Dempsey, Jeremiah J Peiffer, Brendan R Scott
Hughes, LJ, Banyard, HG, Dempsey, AR, Peiffer, JJ, and Scott, BR. Using load-velocity relationships to quantify training-induced fatigue. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to investigate using load-velocity relationships to quantify fluctuations in maximal strength (1 repetition maximum [1RM]), which occur as a result of training-induced fatigue. The 19 well-trained men (age: 24.3 ± 2.9 years, height: 180.1 ± 5.9 cm, body mass: 84.2 ± 10.5 kg, and squat 1RM: 151.1 ± 25...
December 18, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30570511/effects-of-flywheel-strength-training-on-the-running-economy-of-recreational-endurance-runners
#8
Luca Festa, Cantor Tarperi, Kristina Skroce, Gennaro Boccia, Giuseppe Lippi, Antonio La Torre, Federico Schena
Festa, L, Tarperi, C, Skroce, K, Boccia, G, Lippi, G, La Torre, A, and Schena, F. Effects of flywheel strength training on the running economy of recreational endurance runners. J Strength Cond Res XX(X): 000-000, 2018-Running economy (RE) has been defined as the most important determining factor in endurance performance in both elite and recreational runners. The purpose of this study was to evaluate the effect of flywheel strength training (FST) and high-intensity training (HIT) protocols on RE and strength parameters in a group of recreational runners...
December 18, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30557176/internal-and-external-loads-in-training-week-before-the-competition-in-u19-high-level-soccer-players
#9
Álvaro Martín-López, Rui Sousa Mendes, Alfonso Castillo-Rodríguez
Martín-López, Á, Mendes, RS, and Castillo-Rodríguez, A. Internal and external loads in training week before the competition in U19 high-level soccer players. J Strength Cond Res XX(X): 000-000, 2018-Nowadays, the information about the load in training sessions (TRs) and the relationship of these TRs with official competition are necessary to gain the sport success in soccer. The aim of this study was to quantify the different loads in TRs according to days before the competition (P-4, P-2, and P-1) on soccer players U19 based on their playing position and their sport success...
December 14, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30557175/effects-of-2-types-of-resistance-training-models-on-obese-adolescents-body-composition-cardiometabolic-risk-and-physical-fitness
#10
Braulio Henrique Magnani Branco, Isabelle Zanquetta Carvalho, Humberto Garcia de Oliveira, Ana Paula Fanhani, Michelle Cardoso Machado Dos Santos, Leonardo Pestillo de Oliveira, Sara Macente Boni, Nelson Nardo
Magnani Branco, BH, Carvalho, IZ, Garcia de Oliveira, H, Fanhani, AP, Machado dos Santos, MC, Pestillo de Oliveira, L, Macente, SB, and Nelson, NJ. Effects of 2 types of resistance training models on obese adolescents' body composition, cardiometabolic risk, and physical fitness. J Strength Cond Res XX(X): 000-000, 2018-The main objective of this study was to investigate the effects of 2 types of resistance training (RT) models in conjunction with interdisciplinary interventions by other health professionals to reduce the body fat and cardiometabolic risk of obese adolescents while improving their general health-related physical fitness...
December 14, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30550401/a-match-derived-relative-pitch-area-facilitates-the-tactical-representativeness-of-small-sided-games-for-the-official-soccer-match
#11
Sigrid B H Olthof, Wouter G P Frencken, Koen A P M Lemmink
Olthof, SBH, Frencken, WGP, and Lemmink, KAPM. A match-derived relative pitch area facilitates the tactical representativeness of small-sided games for the official soccer match. J Strength Cond Res XX(X): 000-000, 2018-Small-sided games (SSGs) are a promising training format in soccer to replicate (situations of) the official match across all age groups. Typically, SSGs are played on a smaller relative pitch area (RPA; i.e., <150 m) than the match (320 m RPA), which results in different tactical demands...
December 13, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30550400/self-selected-motivational-music-on-the-performance-and-perceived-exertion-of-runners
#12
Jamie C Clark, Timothy Baghurst, Brady S Redus
Clark, JC, Baghurst, T, and Redus, BS. Self-selected motivational music on the performance and perceived exertion of runners. J Strength Cond Res XX(X): 000-000, 2018-Music is used by athletes and exercisers to improve performance outcomes, but it is less known whether its properties can enhance performance at maximal intensity. This study measured participants' performance time, average heart rate, and rating of perceived exertion (RPE) on a 1.5-mile running trial when listening to self-selected motivational music vs...
December 13, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30531419/effects-of-sports-compression-socks-on-performance-physiological-and-hematological-alterations-after-long-haul-air-travel-in-elite-female-volleyballers
#13
James R Broatch, David J Bishop, Emma K Zadow, Shona Halson
Broatch, JR, Bishop, DJ, Zadow, EK, and Halson, S. Effects of sports compression socks on performance, physiological, and hematological alterations after long-haul air travel in elite female volleyballers. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this investigation was to assess the merit of sports compression socks in minimizing travel-induced performance, physiological, and hematological alterations in elite female volleyball athletes. Twelve elite female volleyballers (age, 25 ± 2 years) traveled from Canberra (Australia) to Manila (Philippines), and were assigned to 1 of 2 conditions; compression socks (COMP, n = 6) worn during travel or a passive control (CON, n = 6)...
December 7, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30531418/assessing-the-reliability-of-using-a-horizontal-leg-press-equipped-with-a-force-plate-to-report-on-measures-of-positive-and-negative-neuromuscular-characteristics
#14
Derek D Ferley, Matthew D Vukovich
Ferley, DD and Vukovich, MD. Assessing the reliability of using a horizontal leg press equipped with a force plate to report on measures of positive and negative neuromuscular characteristics. J Strength Cond Res XX(X): 000-000, 2018-Individuals participating in sport or returning from a lower-extremity injury routinely perform assessments of lower-body anaerobic capacity and power to gauge fitness or readiness to return to competition. However, many commonly used assessments lack the specificity of movement and muscle contraction demonstrated in sprinting, jumping, and changing direction...
December 7, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30531417/effects-of-blood-flow-restriction-training-on-aerobic-capacity-and-performance-a-systematic-review
#15
Hunter Bennett, Flynn Slattery
Bennett, H and Slattery, F. Effects of blood flow restriction training on aerobic capacity and performance: A systematic review. J Strength Cond Res XX(X): 000-000, 2018-Blood flow restriction (BFR) is a novel training method that can elicit training adaptations at low training intensities. Recent research has aimed to determine the effect of aerobic exercise with BFR on aerobic fitness and performance, with conflicting results. This review aimed to systematically identify and assess studies that have combined BFR with aerobic exercise in humans, establishing its effect on aerobic fitness and performance...
December 7, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30531416/effects-of-preferred-vs-nonpreferred-music-on-resistance-exercise-performance
#16
Christopher G Ballmann, Marquis J McCullum, Rebecca R Rogers, Mallory M Marshall, Tyler D Williams
Ballmann, CG, McCullum, MJ, Rogers, RR, Marshall, MM , and Williams, TD. Effects of preferred vs. nonpreferred music on resistance exercise performance. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to examine the effects of listening to preferred vs. nonpreferred music on resistance exercise performance. Twelve resistance-trained college-aged males (age = 20.5 ± 1.24 years, height = 183.9 ± 6.8 cm, and body mass = 97.0 ± 18.2 kg) were recruited for this study. In a within-groups counterbalanced study design, participants either listened to preferred or nonpreferred music during a bench press exercise test...
December 7, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30531415/improving-active-gaming-s-energy-expenditure-in-healthy-adults-using-structured-playing-instructions-for-the-nintendo-wii-and-xbox-kinect
#17
Keith E Naugle, Christopher Carey, Tom Ohlman, Mutsa Godza, Alan Mikesky, Kelly M Naugle
Naugle, KE, Carey, C, Ohlman, T, Godza, M, Mikesky, A, and Naugle, KM. Improving active gaming's energy expenditure in healthy adults using structured playing instructions for the Nintendo Wii and Xbox Kinect. J Strength Cond Res XX(X): 000-000, 2018-Professionals work constantly to increase energy expenditure and improve cardiovascular outcomes. A newer form of physical activity used to improve cardiovascular outcomes and increase energy expenditure while also providing entertainment is active gaming. The purpose was to determine energy expenditure and enjoyment levels during participation in different games played with a directed set of instructions designed to enhance movement...
December 7, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30531414/how-to-serve-faster-in-tennis-the-influence-of-an-altered-focus-of-attention-and-augmented-feedback-on-service-speed-in-elite-players
#18
Martin Keller, Yves-Alain Kuhn, Fabian Lüthy, Wolfgang Taube
Keller, M, Kuhn, YA, Lüthy, F, and Taube, W. How to serve faster in tennis: the influence of an altered focus of attention and augmented feedback on service speed in elite players. J Strength Cond Res XX(X): 000-000, 2018-Different approaches, such as providing augmented feedback (AF) or adopting an external focus of attention (EF), have been shown to directly enhance performance in recreational athletes. Furthermore, research has shown that combining AF with EF (AF + EF) results in superior performance compared to AF and EF alone...
December 7, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30531413/methodological-approaches-and-related-challenges-associated-with-the-determination-of-critical-power-and-w
#19
Daniel Muniz-Pumares, Bettina Karsten, Christoph Triska, Mark Glaister
Muniz-Pumares, D, Karsten, B, Triska, C, and Glaister, M. Methodological approaches and related challenges associated with the determination of critical power and W'. J Strength Cond Res XX(X): 000-000, 2018-The relationship between exercise intensity and time to task failure (P-T relationship) is hyperbolic, and characterized by its asymptote (critical power [CP]) and curvature constant (W'). The determination of these parameters is of interest for researchers and practitioners, but the testing protocol for CP and W' determination has not yet been standardized...
December 7, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30531412/prevalence-and-predictors-of-higher-risk-supplement-use-among-collegiate-athletes
#20
John Sassone, Mark Muster, Michelle T Barrack
Sassone, J, Muster, M, and Barrack, MT. Prevalence and predictors of higher-risk supplement use among National Collegiate Athletic Association Division I athletes. J Strength Cond Res XX(X): 000-000, 2018-This study aimed to identify the prevalence and predictors associated with the use of higher-risk dietary supplements, defined as supplements containing herbal ingredients, caffeine, or those classified for weight loss, muscle-building, or as a preworkout supplement, among 557 National Collegiate Athletic Association Division I male and female collegiate athletes...
December 7, 2018: Journal of Strength and Conditioning Research
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