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Strength and conditioning training

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https://www.readbyqxmd.com/read/28434152/compression-garments-and-recovery-from-exercise-a-meta-analysis
#1
REVIEW
Freddy Brown, Conor Gissane, Glyn Howatson, Ken van Someren, Charles Pedlar, Jessica Hill
BACKGROUND: Adequate recovery from exercise is essential to maintain performance throughout training and competition. While compression garments (CG) have been demonstrated to accelerate recovery, the literature is clouded by conflicting results and uncertainty over the optimal conditions of use. OBJECTIVES: A meta-analysis was conducted to assess the effects of CG on the recovery of strength, power and endurance performance following an initial bout of resistance, running, or non-load-bearing endurance (metabolic) exercise...
April 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28426516/physical-profiles-of-female-academy-netball-players-by-position
#2
Christopher Thomas, Kemal Thomas Ismail, Robert Simpson, Paul Comfort, Paul A Jones, Thomas Dos'Santos
The purpose of this study was to evaluate the height, body mass and physical characteristics of female academy netball players by position (centers, defenders and shooters). Data were collected on 43 regional academy players during the preseason period and comprised of height and body mass, and physical characteristics (single-leg hop [SLH], squat jump [SJ], countermovement jump [CMJ], 5- and 10-m sprint, 505 and cardiorespiratory fitness). Defenders and shooters demonstrated significantly (p = < 0.05; d ≥ 1...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28426515/can-transcranial-direct-current-stimulation-improve-muscle-power-in-individuals-with-advanced-resistance-training-experience
#3
Eduardo Lattari, Carlos Campos, Murilo Khede Lamego, Sandro Legey Passos de Souza, Geraldo M Neto, Nuno B Rocha, Aldair José de Oliveira, Sandro Carpenter, Sérgio Machado
The aim of this study was to investigate the effects of transcranial direct current stimulation (tDCS) on countermovement jump performance (CMJ) in men with advanced strength training experience. Ten healthy male subjects, with advanced strength training and squatting exercise experience, were included. Participants took part in an initial visit to the laboratory to complete anthropometric measurements and CMJ kinematic test-retest reliability. Participants then completed three experimental conditions, 48-72 hours apart, in a randomized, double-blinded crossover design: anodal, cathodal and sham tDCS (2 mA for 20 minutes targeting the motor cortex bilaterally)...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28426512/technology-in-s-c-assessing-bodyweight-squat-technique-with-wearable-sensors
#4
Martin A O'Reilly, Darragh F Whelan, Tomas E Ward, Eamonn Delahunt, Brian M Caulfield
Strength and conditioning (S&C) coaches offer expert guidance to help those they work with achieve their personal fitness goals. However it is not always practical to operate under the direct supervision of an S&C coach and consequently individuals are often left training without expert oversight. Recent developments in inertial measurement units (IMUs) and mobile computing platforms have allowed for the possibility of unobtrusive motion tracking systems and the provision of real-time individualised feedback regarding exercise performance...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28421018/the-emergence-of-explicit-knowledge-in-a-serial-reaction-time-task-the-role-of-experienced-fluency-and-strength-of-representation
#5
Sarah Esser, Hilde Haider
The Serial Reaction Time Task (SRTT) is an important paradigm to study the properties of unconscious learning processes. One specifically interesting and still controversially discussed topic are the conditions under which unconsciously acquired knowledge becomes conscious knowledge. The different assumptions about the underlying mechanisms can contrastively be separated into two accounts: single system views in which the strengthening of associative weights throughout training gradually turns implicit knowledge into explicit knowledge, and dual system views in which implicit knowledge itself does not become conscious...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28417093/instability-resistance-training-for-health-and-performance
#6
REVIEW
Erika Zemková
Recently, resistance exercises performed on an unstable surface have become part of athletic training and rehabilitation. Accordingly, their role in performance and health-oriented strength training has increasingly emerged as a matter of interest to researchers and conditioning specialists. A more pronounced activation of stabilizing muscles is assumed to be the main feature of instability resistance exercises. This assumption has been proven by EMG studies, which have highlighted significantly greater electromyographic activity of trunk-stabilizing muscles during exercises under unstable as compared to stable conditions...
April 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28415068/validity-and-reliability-of-a-portable-isometric-mid-thigh-clean-pull
#7
Lachlan P James, Llion A Roberts, G Gregory Haff, Vincent G Kelly, Emma M Beckman
James, LP, Roberts, LA, Haff, GG, Kelly, VG, and Beckman, EM. Validity and reliability of a portable isometric mid-thigh clean pull. J Strength Cond Res 31(5): 1378-1386, 2017-This study investigated the test-retest reliability and criterion validity of force-time curve variables collected through a portable isometric mid-thigh clean pull (IMTP) device equipped with a single-axial load cell. Fifteen males with ≥6 months of resistance training experience attended two testing sessions. In each session, participants performed an IMTP in 2 separate conditions in a randomized counterbalanced manner...
May 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28415065/acute-effect-of-biomechanical-muscle-stimulation-on-the-counter-movement-vertical-jump-power-and-velocity-in-division-i-football-players
#8
Bert H Jacobson, Taylor P Monaghan, John H Sellers, Eric C Conchola, Zach K Pope, Rob G Glass
Jacobson, BH, Monaghan, TP, Sellers, JH, Conchola, EC, Pope, ZK, and Glass, RG. Acute effect of biomechanical muscle stimulation on the counter-movement vertical jump power and velocity in division I football players. J Strength Cond Res 31(5): 1259-1264, 2017-Research regarding whole body vibration (WBV) largely supports such training augmentation in attempts to increase muscle strength and power. However, localized biomechanical vibration has not received the same attention. The purpose of this study was to assess peak and average power before and after acute vibration of selected lower-body sites in division I athletes...
May 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28412592/infants-motor-simulation-of-observed-actions-is-modulated-by-the-visibility-of-the-actor-s-body
#9
Ty W Boyer, Samuel M Harding, Bennett I Bertenthal
Previous research suggests that 9-month-old infants will develop a response bias in the A-not-B search paradigm after only observing an experimenter search for a hidden object on A-trials. In the current experiment, we tested whether infants would persist in making errors when only the hands-and-arms of the experimenter were visible. Three different conditions were included: (1) the experimenter was silent while hiding and finding the object, (2) the experimenter communicated with the infant via infant-directed speech, or (3) the body of the experimenter was visible during the training phase before his head and body were occluded during the test phase...
April 13, 2017: Cognition
https://www.readbyqxmd.com/read/28403029/secular-trends-in-the-physical-fitness-of-united-states-army-recruits-on-entry-to-service-1975-2013
#10
Joseph Knapik, Marilyn Sharp, Ryan A Steelman
A systematic literature search was conducted to identify and analyze articles that reported on physical fitness of new United States (US) Army recruits. The National Library of Medicine's PubMed and the Defense Technical Information Center, were searched using the keywords {military personnel OR trainee OR recruit OR soldier} AND {physical fitness OR strength OR endurance OR flexibility OR balance OR coordination OR muscle contraction OR running OR exercise OR physical conditioning}. Reference lists of obtained articles and contact with authors enhanced the search...
April 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28399016/the-effects-of-beef-chicken-or-whey-protein-post-workout-on-body-composition-and-muscle-performance
#11
Matthew H Sharp, Ryan P Lowery, Kevin A Shields, Jason R Lane, Jocelyn L Gray, Jeremy M Partl, Daniel W Hayes, Gabriel J Wilson, Chase A Hollmer, Julie R Minivich, Jacob M Wilson
The purpose of this study was to determine the effects of post-workout consumption of beef protein isolate (Beef), hydrolyzed chicken protein (Chx) or whey protein concentrate (WPC), compared to a control on lean mass and strength during 8 weeks of resistance training. Forty-one males and females were randomized into four groups: WPC (m=5, f=5; Age (yrs)=19 ± 2, Height (cm)=171 ± 10, Mass (kg)= 74.60 ± 14.19), Beef (m=5, f=5; Age (yrs)=22 ± 4, Height (cm)=170 ± 7, Mass (kg)=70.13 ± 8.16), ChxC(m=5, f=6; Age (yrs)=21 ± 2, Height (cm)=169 ± 9, Mass (kg)=74...
April 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28399015/the-effects-of-ketogenic-dieting-on-body-composition-strength-power-and-hormonal-profiles-in-resistance-training-males
#12
Jacob M Wilson, Ryan P Lowery, Michael D Roberts, Matthew H Sharp, Jordan M Joy, Kevin A Shields, Jeremy Partl, Jeff S Volek, Dominic D'Agostino
This study investigated the impact of an isocaloric and isonitrogenous ketogenic diet (KD) versus a traditional western diet (WD) on changes in body composition, performance, blood lipids, and hormonal profiles in resistance-trained athletes. METHODS: Twenty-five college aged men were divided into a KD or traditional WD from weeks 1-10, with a reintroduction of carbohydrates from weeks 10-11, while participating in a resistance-training program. Body composition, strength, power, and blood lipid profiles were determined at week 0, 10 and 11...
April 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28394833/optimizing-half-squat-post-activation-potential-load-in-squat-jump-training-for-eliciting-relative-maximal-power-in-ski-jumpers
#13
A Gołaś, M Wilk, P Statsny, A Maszczyk, K Pajerska, A Zajac
Training load manipulation in a single workout session can increase or decrease training effectiveness in terms of athlete's strength or power gains. In ski jumping the complex training that elicits maximal power gains may take advantage of the post activation potentiation mechanism (PAP). The aim of research was to evaluate the changes in rate of force development (RFD), rate of power development (RPD) and jump height during a complex training session consisted of the barbell half squat (Sq) as an conditioning exercise with loads ranged between 60-100% of 1 repetition maximum (1RM), followed by a body weight squat jump (SqJ) as a performance task...
April 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28394832/strength-and-conditioning-training-by-the-danish-national-handball-team-prior-to-an-olympic-tournament
#14
Thue Kvorning, Mikkel R B Hansen, Kurt Jensen
The physical demands imposed on national team handball teams during the Olympics imply significant physical preparation in order to improve performance and reduce incidence of injuries. The purpose of the present case report is to describe and analyze the strength and conditioning (S&C) training carried out by the Danish national handball team before the Beijing Olympic Games. Eight weeks of S&C was divided into blocks of 5 weeks emphasizing muscle hypertrophy and long interval running followed by 3 weeks emphasizing strength, power and short interval running...
April 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28389489/long-term-effect-of-smartphone-delivered-interval-walking-training-on-physical-activity-in-patients-with-type-2-diabetes-protocol-for-a-parallel-group-single-blinded-randomised-controlled-trial
#15
Laura Staun Valentiner, Mathias Ried-Larsen, Kristian Karstoft, Cecilie Fau Brinkløv, Charlotte Brøns, Rasmus Oestergaard Nielsen, Robin Christensen, Jens Steen Nielsen, Allan Arthur Vaag, Bente Klarlund Pedersen, Henning Langberg
INTRODUCTION: Physical activity is a cornerstone in type 2 diabetes (T2D) rehabilitation. Effective long-term and low-cost strategies to keep these patients' physically active are needed. However, maintaining physical activity behaviour is difficult once formalised interventions end. Structured exercise training supported by mobile technology and remote feedback is potentially an effective strategy. The objective of the trial is to investigate whether mobile health support using the InterWalk application for smartphones is effective in increasing physical activity levels in persons with T2D over time compared with standard care...
April 7, 2017: BMJ Open
https://www.readbyqxmd.com/read/28386075/pavlovian-conditioning-demonstrated-with-neuromorphic-memristive-devices
#16
Zheng-Hua Tan, Xue-Bing Yin, Rui Yang, Shao-Bo Mi, Chun-Lin Jia, Xin Guo
Pavlovian conditioning, a classical case of associative learning in a biological brain, is demonstrated using the Ni/Nb-SrTiO3/Ti memristive device with intrinsic forgetting properties in the framework of the asymmetric spike-timing-dependent plasticity of synapses. Three basic features of the Pavlovian conditioning, namely, acquisition, extinction and recovery, are implemented in detail. The effects of the temporal relation between conditioned and unconditioned stimuli as well as the time interval between individual training trials on the Pavlovian conditioning are investigated...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28381455/2015-ludwig-lecture-abnormal-cardiovascular-responses-to-exercise-in-hypertension-contribution-of-neural-factors
#17
Jere Holloway Mitchell
During both dynamic (e.g. endurance) and static (e.g. strength) exercise there are exaggerated cardiovascular responses in hypertension. This includes greater increases in blood pressure, heart rate, and efferent sympathetic nerve activity than in normals. Two of the known neural factors which contribute to this abnormal cardiovascular response are the exercise pressor reflex (EPR) and functional sympatholysis. The EPR originates in contracting skeletal muscle and reflexly increases sympathetic efferent nerve activity to the heart and blood vessels as well as decreases parasympathetic efferent nerve activity to the heart...
April 5, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28368956/the-effect-of-varying-plyometric-volume-on-stretch-shortening-cycle-capability-in-collegiate-male-rugby-players
#18
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/28368183/evaluation-of-a-cognitive-remediation-intervention-for-college-students-with-psychiatric-conditions
#19
Michelle G Mullen, Judy L Thompson, Ann A Murphy, Derek Malenczak, Giovanna Giacobbe, Sean Karyczak, Katherine E Holloway, Elizabeth W Twamley, Steven M Silverstein, Kenneth J Gill
OBJECTIVE: Given the poor educational outcomes associated with psychiatric conditions, we developed Focused Academic Strength Training (FAST), a 12-week strategy-focused cognitive remediation intervention designed to improve academic functioning among college students with psychiatric conditions. Here we report initial results from a randomized controlled trial of FAST. METHOD: Seventy-two college students with mood, anxiety, and/or psychotic disorders were randomized to receive FAST or services as usual and were assessed at baseline and 4 months (posttreatment)...
March 2017: Psychiatric Rehabilitation Journal
https://www.readbyqxmd.com/read/28366821/considerations-of-the-principles-of-resistance-training-in-exercise-studies-for-the-management-of-knee-osteoarthritis-a-systematic-review
#20
REVIEW
Claire Minshull, Nigel Gleeson
OBJECTIVE: To evaluate the methodological quality of resistance training interventions for the management of knee osteoarthritis. DATA SOURCES: A search of the literature for studies published up to 10(th) August 2015 was performed on Medline (OVID platform), PubMed, EMBase and PEDRo databases. Search terms associated with 'osteoarthritis'; 'knee' and 'muscle resistance exercise' were used.. STUDY SELECTION: Studies were included in the review if they were published in the English language and met the following criteria : 1) muscle resistance training was the primary intervention; 2) RCT design; 3) treatment arms included at least a muscle conditioning intervention and a non-exercise control group; 4) participants had osteoarthritis of the knee; ...
March 30, 2017: Archives of Physical Medicine and Rehabilitation
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