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Journal of Strength and Conditioning Research

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https://www.readbyqxmd.com/read/30239457/normative-data-and-physical-determinants-of-multiple-sprint-sets-in-young-soccer-players-aged-11-18-years-effect-of-maturity-status
#1
Mohamed Amin Selmi, Radhouane Haj Sassi, Mohamed Haj Yahmed, Silvana Giannini, Fabrizio Perroni, Mohamed Elloumi
Selmi, MA, Sassi, RH, Yahmed, MH, Giannini, S, Perroni, F, and Elloumi, M. Normative data and physical determinants of multiple sprint sets in young soccer players aged 11-18 years: Effect of maturity status. J Strength Cond Res XX(X): 000-000, 2018-The aims of the study were: (a) to establish normative data for repeated-sprint sets (RSS) test based on the maturity status (age at peak height velocity [PHV]) and (2) to investigate the relationship between anthropometrical variables (stature, sitting height, body mass, and body fat percentage), RSS (2 × 5 × 20 m with 15-second recovery between sprints and 1-minute recovery between sets), and fitness tests {squat jump, countermovement jump, standing long jump, standing triple jump, 5-jump test, and 20-m shuttle run (multistage shuttle run test [MSRT])}...
September 19, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30239456/effects-of-two-different-tapering-protocols-on-fitness-and-physical-match-performance-in-elite-junior-soccer-players
#2
Marino Krespi, Goran Sporiš, Nebojša Trajković
Krespi, M, Sporiš, G, and Trajković, N. Effects of two different tapering protocols on fitness and physical match performance in elite junior soccer players. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to determine the effects of 2 different tapering protocols on fitness and physical match performance in elite junior soccer players. One-hundred fifty-eight elite junior soccer players (mean age: 17.1 ± 0.79 years; mean height: 177.9 ± 6.64 cm; mean body mass: 71.3 ± 7.96 kg; and mean body mass index: 22...
September 19, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30239455/physical-fitness-and-blood-glucose-influence-performance-in-indycar-racing
#3
David P Ferguson, Nicholas D Myers
Ferguson, DP and Myers, ND. Physical fitness and blood glucose influence performance in IndyCar racing. J Strength Cond Res XX(X): 000-000, 2018-Charlie Kimball (CK) is an elite-level IndyCar driver who has type 1 diabetes. Since CK became a full-time competitor, there has been exponential growth in the number of racing drivers competing with type 1 diabetes. Therefore, the purpose of this article is to present a case report of data collected on CK over 6 years, to better inform strength and conditioning coaches on how to prepare racing drivers with type 1 diabetes for competition...
September 19, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30239454/body-composition-variables-by-sport-and-sport-position-in-elite-collegiate-athletes
#4
Jennifer B Fields, Justin J Merrigan, Jason B White, Margaret T Jones
Fields, JB, Merrigan, JJ, White, JB, and Jones, MT. Body composition variables by sport and sport-position in elite collegiate athletes. J Strength Cond Res XX(X): 000-000, 2018-To assess body composition measures by sport and sport-position. Elite collegiate athletes participated (n = 475): men's and women's soccer (MSOC, n = 67; WSOC, n = 110); men's and women's swimming (MSWIM, n = 26; WSWIM, n = 22); men's and women's track and field (MTF, n = 29; WTF, n = 24); women's lacrosse and volleyball (WLAX, n = 84; WVB, n = 73); and baseball (BASE, n = 40)...
September 19, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30239453/divergent-blood-pressure-response-after-high-intensity-interval-exercise-a-signal-of-delayed-recovery
#5
Gary R Hunter, Gordon Fisher, David R Bryan, Juliano H Borges, Stephen J Carter
Hunter, GR, Fisher, G, Bryan, DR, Borges, JH, and Carter, SJ. Divergent blood pressure response after high-intensity interval exercise: a signal of delayed recovery? J Strength Cond Res XX(X): 000-000, 2018-The objective of this commentary is to highlight potential factors influential to the adaptation of high-intensity exercise. Herein, we present a rationale supporting the contention that elevated systolic blood pressure, after a bout of high-intensity exercise, may be indicative of delayed/incomplete recovery...
September 19, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30239452/functional-basis-of-asymmetrical-lower-body-skeletal-morphology-in-professional-australian-rules-footballers
#6
Nicolas H Hart, Robert U Newton, Jason Weber, Tania Spiteri, Timo Rantalainen, Michael Dobbin, Paola Chivers, Sophia Nimphius
Hart, NH, Newton, RU, Weber, J, Spiteri, T, Rantalainen, T, Dobbin, M, Chivers, P, and Nimphius, S. Functional basis of asymmetrical lower-body skeletal morphology in elite Australian footballers. J Strength Cond Res XX(X): 000-000, 2018-Bone strength is a product of its material and structural properties and is highly responsive to mechanical load. Given the measureable and adaptable features of bone, and thus relevance to medical screening, injury prevention, and injury management in athletes, this study describes the lower-body skeletal morphology of professional Australian rules footballers...
September 19, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30239451/nordic-hamstring-strength-of-highly-trained-youth-football-players-and-its-relation-to-sprint-performance
#7
Goran Markovic, Nejc Sarabon, Frane Boban, Ivan Zoric, Mario Jelcic, Kresimir Sos, Mark Scappaticci
Markovic, G, Sarabon, N, Boban, F, Zoric, I, Jelcic, M, Sos, K, and Scappaticci, M. Nordic hamstring strength of highly trained youth football players and its relation to sprint performance. J Strength Cond Res XX(X): 000-000, 2018-We aimed to characterize Nordic hamstring (NH) strength and bilateral NH strength asymmetry in highly trained youth footballers and to investigate the relationship between NH strength and sprint performance. Twenty-two adult and 133 highly trained youth footballers in the age groups U12-U18 participated in this study...
September 19, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30239450/effects-of-an-8-week-in-season-elastic-band-training-program-on-explosive-muscle-performance-change-of-direction-and-repeated-changes-of-direction-in-the-lower-limbs-of-junior-male-handball-players
#8
Ghaith Aloui, Mehrez Hammami, Mourad Fathloun, Souhail Hermassi, Nawel Gaamouri, Roy J Shephard, Mohamed Souhaiel Chelly
Aloui, G, Hammami, M, Fathloun, M, Hermassi, S, Gaamouri, N, Shephard, RJ, and Chelly, MS. Effects of an 8-week in-season elastic band training program on explosive muscle performance, change of direction, and repeated changes of direction in the lower limbs of junior male handball players. J Strength Cond Res XX(X): 000-000, 2018-The aim of this study was to examine the effects of incorporating 8 weeks of biweekly lower-limb elastic band training (knee and hip extension) into the in-season regimen of junior handball players...
September 19, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30234695/muscle-activation-during-power-oriented-resistance-training-continuous-vs-cluster-set-configurations
#9
Antonio J Morales-Artacho, Amador García-Ramos, Alejandro Pérez-Castilla, Paulino Padial, Angel M Gomez, Antonio M Peinado, Jose L Pérez-Córdoba, Belén Feriche
Morales-Artacho, AJ, García-Ramos, A, Pérez-Castilla, A, Padial, P, Gomez, AM, Peinado, AM, Pérez-Córdoba, JL, and Feriche, B. Muscle activation during power-oriented resistance training: continuous vs. cluster set configurations. J Strength Cond Res XX(X): 000-000, 2018-This study examined performance and electromyography (EMG) changes during a power training protocol comprising continuous or clustered set configurations. Eighteen active males completed 6 sets of 6 repetitions during the loaded (20% 1 repetition maximum) countermovement jump (CMJ) exercise, continuously (n = 9) or with a 30-second pause every 2 repetitions (cluster; n = 9)...
September 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30234694/changes-in-energy-expenditure-dietary-intake-and-energy-availability-across-an-entire-collegiate-women-s-basketball-season
#10
Breyannah R Zanders, Brad S Currier, Patrick S Harty, Hannah A Zabriskie, Charles R Smith, Richard A Stecker, Scott R Richmond, Andrew R Jagim, Chad M Kerksick
Zanders, BR, Currier, BS, Harty, PS, Zabriskie, HA, Smith, CR, Stecker, RA, Richmond, SR, Jagim, AR, and Kerksick, CM. Changes in energy expenditure, dietary intake, and energy availability across an entire collegiate women's basketball season. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to identify changes in energy expenditure and dietary intake across an entire women's basketball season. On 5 different occasions across the competitive season, female collegiate basketball players (19...
September 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30234693/measuring-decrement-in-change-of-direction-speed-across-repeated-sprints-in-basketball-novel-vs-traditional-approaches
#11
Aaron T Scanlan, Maria C Madueno, Joshua H Guy, Kate Giamarelos, Tania Spiteri, Vincent J Dalbo
Scanlan, AT, Madueno, MC, Guy, JH, Giamarelos, K, Spiteri, T, and Dalbo, VJ. Measuring decrement in change-of-direction speed across repeated sprints in basketball: Novel vs. traditional approaches. J Strength Cond Res XX(X): 000-000, 2018-Approaches to quantify decrement in change-of-direction speed during repeated sprints in basketball players have traditionally used total performance time, which is strongly influenced by linear speed. The purpose of this study was to compare performance decrement across change-of-direction sprints using total performance time and a novel approach that better isolates change-of-direction speed, termed change-of-direction deficit (CODD)...
September 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30216253/lumbopelvic-hip-complex-and-scapular-stabilizing-muscle-activations-during-full-body-exercises-with-and-without-resistance-bands
#12
Kyle W Wasserberger, Jessica L Downs, Jeff W Barfield, Teasie K Williams, Gretchen D Oliver
Wasserberger, KW, Downs, JL, Barfield, JW, Williams, TK, and Oliver, GD. Lumbopelvic-hip complex and scapular stabilizing muscle activations during full-body exercises with and without resistance bands. J Strength Cond Res XX(X): 000-000, 2018-Inefficient sequencing in the kinetic chain has been linked to decreased performance and increased injury risk. Resistance band usage is very common in baseball/softball due to accessibility and low cost. However, resistance band use has primarily focused on the rotator cuff and surrounding shoulder musculature, thereby ignoring the rest of the kinetic chain...
September 12, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30216252/monitoring-wellness-training-load-and-running-performance-during-a-major-international-female-field-hockey-tournament
#13
Aideen McGuinness, Gerard McMahon, Shane Malone, Darren Kenna, David Passmore, Kieran Collins
McGuinness, McMahon, G, A, Malone, S, Kenna, D, Passmore, D, and Collins, K. Monitoring wellness, training load, and running performance during a major international female field hockey tournament. J Strength Cond Res XX(X): 000-000, 2018-The current observational study quantified players' activity profiles during a major international female field hockey tournament and determined whether an association exists between well-being measures and running performance within elite female hockey players. Elite female field hockey players (23 ± 3 years; 162...
September 12, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30216251/comparison-of-physical-fitness-parameters-for-starters-vs-nonstarters-in-an-ncaa-division-i-men-s-lacrosse-team
#14
Katie M Sell, James M Prendergast, Jamie J Ghigiarelli, Adam M Gonzalez, Lauren M Biscardi, Adam R Jajtner, Alexander S Rothstein
Sell, KM, Prendergast, JM, Ghigiarelli, JJ, Gonzalez, AM, Biscardi, LM, Jajtner, AR, and Rothstein, AS. Comparison of physical fitness parameters for starters vs. nonstarters in an NCAA division I men's lacrosse team. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to present a fitness profile of Division I male lacrosse players and compare the fitness attributes across different positions and starting status. Forty-one Division I men's lacrosse players (19.6 ± 1.6 years, 82.5 ± 9.5 kg, 182...
September 12, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30216250/grip-strength-in-youth-ice-hockey-players-normative-values-and-predictors-of-performance
#15
Tiffany Toong, Katherine E Wilson, Karolina Urban, Melissa Paniccia, Anne W Hunt, Michelle Keightley, Nick Reed
Toong, T, Wilson, KE, Urban, K, Paniccia, M, Hunt, AW, Keightley, M, and Reed, N. Grip strength in youth ice hockey players: Normative values and predictors of performance. J Strength Cond Res XX(X): 000-000, 2018-Grip strength is a simple, valid, and reliable tool for estimating overall muscular strength, a key component of health-related fitness and sport performance. To date, there is a paucity of up-to-date and developmentally sensitive grip strength norms specific to youth-athlete populations. The objectives of this study are to (a) establish normative grip strength values in youth ice hockey players, (b) descriptively compare these values with existing Canadian pediatric norms, and (c) explore the relationship between age, sex, body mass, and hockey playing level on grip strength performance...
September 12, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30216249/use-of-functional-movement-screen-scores-to-predict-dynamic-balance-in-physically-active-men-and-women
#16
Eric M Scudamore, Sandra L Stevens, Dana K Fuller, John M Coons, Don W Morgan
Scudamore, EM, Stevens, SL, Fuller, DK, Coons, JM, and Morgan, DW. Use of functional movement screen scores to predict dynamic balance in physically active men and women. J Strength Cond Res XX(X): 000-000, 2018-The primary focus of this study was to determine whether scores obtained from the Functional Movement Screen (FMS) can predict dynamic balance in young, healthy adults. Thirty-four physically active participants completed the FMS, and balance was assessed using measures of composite reach (CR) distance and overall stability indices (OSI) derived from Y Balance and Biodex Balance System testing, respectively...
September 12, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30216248/monitoring-the-external-and-internal-load-under-2-teaching-methodologies
#17
Sergio González-Espinosa, Antonio Antúnez, Sebastián Feu, Sergio J Ibáñez
González-Espinosa, S, Antúnez, A, Feu, S, and Ibáñez, SJ. Monitoring the external and internal load under 2 teaching methodologies. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to analyze and compare the physical demands produced by the implementation of 2 sport teaching methods during a class and their relation with the learning achieved by the students. Two intervention programs were used to teach the sport of basketball, one based on the direct instruction (DI) method and the other on the tactical-game approach (TGA)...
September 12, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30204657/range-of-motion-adaptations-in-powerlifters
#18
Stephen J Gadomski, Nicholas A Ratamess, Paul T Cutrufello
Gadomski, SJ, Ratamess, NA, and Cutrufello, PT. Range of motion adaptations in powerlifters. J Strength Cond Res XX(X): 000-000, 2018-The aim of this study was to investigate range of motion (ROM) and training patterns in powerlifters. Upper- and lower-extremity passive ROMs were assessed through goniometry in 15 male powerlifters (35.3 ± 13.7 years) and 15 age-matched controls (34.9 ± 14.6 years). The Apley scratch test and modified Thomas test were used to assess ROM across multiple joints. Training frequency, stretching frequency, and exercise selection were recorded using questionnaires...
September 10, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30204656/waist-circumference-and-waist-to-hip-ratio-in-law-enforcement-agency-recruits-relationship-to-performance-in-physical-fitness-tests
#19
Robert G Lockie, Tomas R Ruvalcaba, Michael Stierli, Joseph M Dulla, J Jay Dawes, Robin M Orr
Lockie, RG, Ruvalcaba, TR, Stierli, M, Dulla, JM, Dawes, JJ, and Orr, RM. Waist circumference and waist-to-hip ratio in law enforcement agency recruits: relationship to performance in physical fitness tests. J Strength Cond Res XX(X): 000-000, 2018-Law enforcement agencies (LEAs) use tests to assess recruit physical fitness. Body fat can influence test performance but is difficult to measure during academy because of time, equipment constraints, and instructor knowledge. This study examined relationships between waist circumference (WC) and waist-to-hip ratio (WHR), practical measures of fat distribution, and fitness test performance...
September 10, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30204655/familiarization-with-airflow-restriction-mask-during-resistance-exercise-effect-on-tolerance-and-total-volume
#20
Cássia L Teodoro, Arthur F Gáspari, Ricardo Berton, João F Barbieri, Manoel Silva, Luz A A Castaño, Patrícia Guimarães, Antonio C Moraes
Teodoro, CL, Gáspari, AF, Berton, R, Barbieri, JF, Silva, M, Castaño, LAA, Guimarães, P, and Moraes, AC. Familiarization with airflow-restriction mask during resistance exercise: Effect on tolerance and total volume. J Strength Cond Res XX(X): 000-000, 2018-This study investigated whether familiarization with the airflow-restriction mask (AIRfr) increases tolerance and avoids negative effects on performance of resistance exercise (RE). Ten resistance-trained male subjects performed a familiarization session (FAM), followed by 2 testing sessions, with the AIRfr and without airflow restriction (SHAM) in a counterbalanced and randomized cross-over design...
September 10, 2018: Journal of Strength and Conditioning Research
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