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https://www.readbyqxmd.com/read/28538312/skeletal-muscle-contraction-time-and-tone-decrease-after-8-weeks-of-plyometric-training
#1
Damir Zubac, Boštjan Šimunič
Zubac, D and Šimunič, B. Skeletal muscle contraction time and tone decrease after 8 weeks of plyometric training. J Strength Cond Res 31(6): 1610-1619, 2017-The aim of the study was to examine whether an improvement in jumping performance after 8 weeks of plyometric training (PT) runs in parallel with changes in lower-limb skeletal muscle contractile properties. Using noninvasive tensiomyography (TMG), we assessed contraction time (Tc) and the maximal amplitude of radial displacement (Dm) in 20 subjects (50% men; age 22...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538294/effects-of-different-combinations-of-strength-power-and-plyometric-training-on-the-physical-performance-of-elite-young-soccer-players
#2
Ronaldo Kobal, Irineu Loturco, Renato Barroso, Saulo Gil, Rogério Cuniyochi, Carlos Ugrinowitsch, Hamilton Roschel, Valmor Tricoli
Kobal, R, Loturco, I, Barroso, R, Gil, S, Cuniyochi, R, Ugrinowitsch, C, Roschel, H, and Tricoli, V. Effects of different combinations of strength, power, and plyometric training on the physical performance of elite young soccer players. J Strength Cond Res 31(6): 1468-1476, 2017-The combination of strength (ST) and plyometric training (PT) has been shown to be effective for improving sport-specific performance. However, there is no consensus about the most effective way to combine these methods in the same training session to produce greater improvements in neuromuscular performance of soccer players...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28530511/wnt-signaling-related-osteokines-and-transforming-growth-factors-before-and-after-a-single-bout-of-plyometric-exercise-in-child-and-adolescent-females
#3
Jennifer Dekker, Katlynne Nelson, Nigel Kurgan, Bareket Falk, Andrea Josse, Panagiota Klentrou
This study examined resting levels of catabolic and anabolic osteokines related to Wnt signaling and their responses to a single bout of plyometric exercise in child and adolescent females. Fourteen pre-menarcheal girls (10.5 ± 1.8 years old) and 12 post-menarcheal adolescent girls (15.0 ± 1.0 years old) performed a plyometric exercise trial. One resting and three post-exercise blood samples (5 min, 1h, 24h post-exercise) were analysed for sclerostin (SOST), dickkopf-1 (DKK-1), osteoprotegerin (OPG), receptor activator of nuclear factor kappa-β ligand (RANKL) and transforming growth factors (TGF-β1, TGF-β2 and TGF-β3)...
May 22, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28515056/reducing-musculoskeletal-injury-and-concussion-risk-in-schoolboy-rugby-players-with-a-pre-activity-movement-control-exercise-programme-a-cluster-randomised-controlled-trial
#4
Michael D Hislop, Keith A Stokes, Sean Williams, Carly D McKay, Mike E England, Simon P T Kemp, Grant Trewartha
BACKGROUND: Injury risk in youth rugby has received much attention, highlighting the importance of establishing evidence-based injury reduction strategies. AIM: To determine the efficacy of a movement control exercise programme in reducing injuries in youth rugby players and to investigate the effect of programme dose on injury measures. METHODS: In a cluster-randomised controlled trial, 40 independent schools (118 teams, 3188 players aged 14-18 years) were allocated to receive either the intervention or a reference programme, both of which were to be delivered by school coaches...
May 17, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28486339/acute-effect-of-upper-and-lower-body-postactivation-exercises-on-shot-put-performance
#5
Eleni I Kontoy, Fani Berberidou, Theophilos C Pilianidis, Nikolaos I Mantzouranis, Spyridon K Methenitis
The purpose of the present study was to investigate the effect of different types of upper and lower' extremities exercises on acute increase of shot put performance, in moderate experienced throwers. Eight (n=8) males and nine (n=9) female throwers participated in the present study. Their bench press and squat maximum strength were measured while their shot put performance from power position was evaluated before and after four interventions: [1] plyometric push-ups (Plyo), [2] 6s isometric push-ups (Iso), [3] 3 countermovement jumps (CMJ) and [4] 10 reps...
May 10, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28469755/can-different-complex-training-improve-the-individual-phenomenon-of-post-activation-potentiation
#6
Zong-Rong Chen, Shin-Liang Lo, Min-Hsien Wang, Ching-Fang Yu, Hsien-Te Peng
The aims of the present study were (a) to determine whether the two types of complex training and vibration complex training would improve the individual phenomenon of post-activation potentiation (PAP) for every athlete in a team setting; and (b) to compare the acute effect of resistance and plyometric exercise, whole body vibration, complex training and vibration complex training on vertical jump performance. The participants were ten male division I college volleyball and basketball players. They were asked to perform three vertical jumps as a pre-test and were then randomly assigned to one of five PAP protocols, resistance exercise using half squat exercise, plyometric exercise using drop jumps with individualized drop height, whole body vibration using squats on a vibration plate, complex training combining resistance exercise with plyometric exercise, vibration complex training combining whole body vibration with plyometric exercise...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28445230/comparison-between-unilateral-and-bilateral-plyometric-training-on-single-and-double-leg-jumping-performance-and-strength
#7
Gregory C Bogdanis, Athanasios Tsoukos, Olga Kaloheri, Gerasimos Terzis, Panagiotis Veligekas, Lee E Brown
This study compared the effects of unilateral and bilateral plyometric training on single and double-leg jumping performance, maximal strength and rate of force development (RFD). Fifteen moderately trained subjects were randomly assigned to either a unilateral (U, n=7) or bilateral group (B, n=8). Both groups performed maximal effort plyometric leg exercises two times per week for 6 weeks. The B group performed all exercises with both legs, while the U group performed half the repetitions with each leg, so that total exercise volume was the same...
April 18, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28426510/the-effect-of-external-loading-on-force-and-power-production-during-plyometric-push-ups
#8
Taylour J Hinshaw, Mitchell L Stephenson, Zhanxin Sha, Boyi Dai
One common exercise to train upper body strength and power is the push-up. Training at the loads that would produce the greatest power is an effective way to increase peak power. The purpose of the current study was to quantify the changes in peak force, peak power, and peak velocity among a modified plyometric push-up and plyometric push-ups with or without external loading in physically-active young adults. Eighteen male and seventeen female participants completed four push-ups: (1) modified plyometric push-up on the knees, (2) plyometric push-up without external loading, (3) plyometric push-up with an external load of 5% body weight, and (4) plyometric push-up with an external load of 10% body weight...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28404557/exercise-prescription-for-overhead-athletes-with-shoulder-pathology-a-systematic-review-with-best-evidence-synthesis
#9
REVIEW
Alexis A Wright, Eric J Hegedus, Daniel T Tarara, Samantha C Ray, Steven L Dischiavi
OBJECTIVE: To produce a best evidence synthesis of exercise prescription used when treating shoulder pathology in the overhead athlete. DESIGN: A systematic review of exercises used in overhead athletes including case studies and clinical commentaries. DATA SOURCES: MEDLINE, PubMed, SPORTDiscus and CINAHL from database inception through July 8, 2016. METHODS: We examined data from randomised controlled trials and prospective cohort (level I-IV evidence) studies that addressed exercise intervention in the rehabilitation of the overhead athlete with shoulder pathology...
April 12, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28394719/effects-of-strength-explosive-and-plyometric-training-on-energy-cost-of-running-in-ultra-endurance-athletes
#10
Nicola Giovanelli, Paolo Taboga, Enrico Rejc, Stefano Lazzer
The aim of the present study was to evaluate the effects of a 12-week home-based strength, explosive and plyometric (SEP) training on the cost of running (Cr) in well-trained ultra-marathoners and to assess the main mechanical parameters affecting changes in Cr. Twenty-five male runners (38.2 ± 7.1 years; body mass index: 23.0 ± 1.1 kg·m(-2); V˙O2max: 55.4 ± 4.0 mlO2·kg(-1)·min(-1)) were divided into an exercise (EG = 13) and control group (CG = 12). Before and after a 12-week SEP training, Cr, spring-mass model parameters at four speeds (8, 10, 12, 14 km·h(-1)) were calculated and maximal muscle power (MMP) of the lower limbs was measured...
April 10, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28368956/the-effect-of-varying-plyometric-volume-on-stretch-shortening-cycle-capability-in-collegiate-male-rugby-players
#11
Mark Jeffreys, Mark De Ste Croix, Rhodri S Lloyd, Jon L Oliver, Jonathan Hughes
The purpose of this study was to identify the effectiveness of low and high volume plyometric loads on developing stretch shortening cycle capability in collegiate rugby players. A between- group repeated measures design was used. Thirty six subjects (age 20.3 ±1.6 yrs, mass 91.63 ±10.36kg, stature 182.03 ±5.24cm) were randomly assigned to one of three groups, a control group (CG), a low volume plyometric group (LPG) or a high volume plyometric group (HPG). Data were collected from a force plate, and measures of reactive strength index (RSI) and leg stiffness were calculated from jump height, contact time and flight time...
March 25, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28344461/within-session-sequence-of-balance-and-plyometric-exercises-does-not-affect-training-adaptations-with-youth-soccer-athletes
#12
Mehdi Chaouachi, Urs Granacher, Issam Makhlouf, Raouf Hammami, David G Behm, Anis Chaouachi
The integration of balance and plyometric training has been shown to provide significant improvements in sprint, jump, agility, and other performance measures in young athletes. It is not known if a specific within session balance and plyometric exercise sequence provides more effective training adaptations. The objective of the present study was to investigate the effects of using a sequence of alternating pairs of exercises versus a block (series) of all balance exercises followed by a block of plyometric exercises on components of physical fitness such as muscle strength, power, speed, agility, and balance...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28315285/effects-of-plyometric-training-on-physical-fitness-in-prepuberal-soccer-athletes
#13
Yassine Negra, Helmi Chaabene, Senda Sammoud, Raja Bouguezzi, Mohamed Aymen Abbes, Younés Hachana, Urs Granacher
This study aimed at examining the effects of plyometric training on stable (SPT) vs. unstable (UPT) surfaces on physical fitness in prepuberal soccer players. Male athletes were randomly assigned to SPT (n=18; age=12.7±0.2 years) or UPT (n=16; age=12.2±0.5 years). Both groups conducted 3 regular soccer training sessions per week combined with either 2 SPT or UPT sessions. Assessment of jumping ability (countermovement jump [CMJ], and standing long jump [SLJ]), speed (10-m, 20-m, 30-m sprint), agility (Illinois agility test [IAT]), and balance (stable [SSBT], unstable [USBT] stork balance test; stable [SYBT], unstable [UYBT] Y balance test) was conducted pre-and post-training...
May 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28229575/effects-of-a-low-volume-plyometric-training-in-anaerobic-performance-of-adolescent-athletes
#14
Ari R Assunção, Martim Bottaro, Euler A Cardoso, Daiane P Dantas da Silva, Marcelo Ferraz, Carlos A Vieira, Paulo Gentil
BACKGROUND: Parameters related to the anaerobic capacity and power may be important for the performance of many sports whose skills are related to high-intensity and short- duration efforts. Although plyometric training (PT) has been widely used in the regular strength and conditioning programs of young athletes, its effects on anaerobic performance are still controversial. Therefore, the purpose of the present study was to evaluate the effects of PT in anaerobic performance in young athletes...
February 22, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28213750/effect-of-an-acute-dose-of-omega-3-fish-oil-following-exercise-induced-muscle-damage
#15
RANDOMIZED CONTROLLED TRIAL
J R Jakeman, D M Lambrick, B Wooley, J A Babraj, J A Faulkner
PURPOSE: The purpose of this double-blind, placebo-controlled study was to examine the effect of two fish oil supplements, one high in EPA (750 mg EPA, 50 mg DHA) and one low in EPA (150 mg EPA, 100 mg DHA), taken acutely as a recovery strategy following EIMD. METHODS: Twenty-seven physically active males (26 ± 4 year, 1.77 ± 0.07 m, 80 ± 10 kg) completed 100 plyometric drop jumps to induce muscle damage. Perceptual (perceived soreness) and functional (isokinetic muscle strength at 60° and 180° s(-1), squat jump performance and countermovement jump performance) indices of EIMD were recorded before, and 1, 24, 48, 72, and 96h after the damaging protocol...
March 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28182510/the-effect-of-plyometric-training-volume-in-prepubertal-male-soccer-players-athletic-performance
#16
Helmi Chaabene, Yassine Negra
PURPOSE: The aim of this study was to assess and to compare the effects of 8-weeks in-season (2 sessions per-week) low and high-volume plyometric training (PT) on measures of physical fitness in prepubertal male soccer players. METHODS: A total of twenty-five soccer players were randomly assigned to low-volume plyometric training group (LPT; n=13; age = 12.68 ± 0.23 years; age at peak height velocity (APHV) = 14.25 ± 0.29 years, maturity-offset = -1.57 ± 0.29 years) and high-volume plyometric training group (HPT; n=12; age = 12...
February 9, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28179885/plyometric-training-favors-optimizing-muscle-tendon-behavior-during-depth-jumping
#17
Kuniaki Hirayama, Soichiro Iwanuma, Naoki Ikeda, Ayumi Yoshikawa, Ryoichi Ema, Yasuo Kawakami
The purpose of the present study was to elucidate how plyometric training improves stretch-shortening cycle (SSC) exercise performance in terms of muscle strength, tendon stiffness, and muscle-tendon behavior during SSC exercise. Eleven men were assigned to a training group and ten to a control group. Subjects in the training group performed depth jumps (DJ) using only the ankle joint for 12 weeks. Before and after the period, we observed reaction forces at foot, muscle-tendon behavior of the gastrocnemius, and electromyographic activities of the triceps surae and tibialis anterior during DJ...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28173788/real-time-optimized-biofeedback-utilizing-sport-techniques-robust-a-study-protocol-for-a-randomized-controlled-trial
#18
Jeffrey B Taylor, Anh-Dung Nguyen, Mark V Paterno, Bin Huang, Kevin R Ford
BACKGROUND: Anterior cruciate ligament (ACL) injuries in female athletes lead to a variety of short- and long-term physical, financial, and psychosocial ramifications. While dedicated injury prevention training programs have shown promise, ACL injury rates remain high as implementation has not become widespread. Conventional prevention programs use a combination of resistance, plyometric, balance and agility training to improve high-risk biomechanics and reduce the risk of injury. While many of these programs focus on reducing knee abduction load and posture during dynamic activity, targeting hip extensor strength and utilization may be more efficacious, as it is theorized to be an underlying mechanism of injury in adolescent female athletes...
February 7, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28169153/effects-of-light-load-maximal-lifting-velocity-weight-training-vs-combined-weight-training-and-plyometrics-on-sprint-vertical-jump-and-strength-performance-in-adult-soccer-players
#19
David Rodríguez-Rosell, Julio Torres-Torrelo, Felipe Franco-Márquez, José Manuel González-Suárez, Juan José González-Badillo
OBJECTIVES: The purpose of this study was to compare the effects of combined light-load maximal lifting velocity weight training (WT) and plyometric training (PT) with WT alone on strength, jump and sprint performance in semiprofessional soccer players. DESIGN: Experimental, pre-post tests measures. METHODS: Thirty adult soccer players were randomly assigned into three groups: WT alone (FSG, n=10), WT combined to jump and sprint exercises (COM, n=10) and control group (CG, n=10)...
January 24, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28150178/the-effect-of-concurrent-plyometric-training-versus-submaximal-aerobic-cycling-on-rowing-economy-peak-power-and-performance-in-male-high-school-rowers
#20
Julian D Egan-Shuttler, Rohan Edmonds, Cassandra Eddy, Veronica O'Neill, Stephen J Ives
BACKGROUND: Plyometric training has been shown to increase muscle power, running economy, and performance in athletes. Despite its use by rowing coaches, it is unknown whether plyometrics might improve rowing economy or performance. The purpose was to determine if plyometric training, in conjunction with training on the water, would lead to improved rowing economy and performance. METHODS: Eighteen male high school rowers were assigned to perform 4 weeks of either plyometric training (PLYO, n = 9) or steady-state cycling below ventilatory threshold (endurance, E, n = 9), for 30 min prior to practice on the water (matched for training volume) 3 days per week...
December 2017: Sports Medicine—Open
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