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Strength and conditioning training

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https://www.readbyqxmd.com/read/27920726/hrvanalysis-a-free-software-for-analyzing-cardiac-autonomic-activity
#1
Vincent Pichot, Frédéric Roche, Sébastien Celle, Jean-Claude Barthélémy, Florian Chouchou
Since the pioneering studies of the 1960s, heart rate variability (HRV) has become an increasingly used non-invasive tool for examining cardiac autonomic functions and dysfunctions in various populations and conditions. Many calculation methods have been developed to address these issues, each with their strengths and weaknesses. Although, its interpretation may remain difficult, this technique provides, from a non-invasive approach, reliable physiological information that was previously inaccessible, in many fields including death and health prediction, training and overtraining, cardiac and respiratory rehabilitation, sleep-disordered breathing, large cohort follow-ups, children's autonomic status, anesthesia, or neurophysiological studies...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27899894/moderate-load-eccentric-exercise-a-distinct-novel-training-modality
#2
REVIEW
Hans Hoppeler
Over the last 20 years a number of studies have been published using progressive eccentric exercise protocols on motorized ergometers or similar devices that allow for controlled application of eccentric loads. Exercise protocols ramp eccentric loads over an initial 3 weeks period in order to prevent muscle damage and delayed onset muscle soreness. Final training loads reach 400-500 W in rehabilitative settings and over 1200 W in elite athletes. Training is typically carried out three times per week for durations of 20-30 min...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27893479/complex-training-the-effect-of-exercise-selection-and-training-status-on-post-activation-potentiation-in-rugby-league-players
#3
David J Scott, Massimiliano Ditroilo, Phil Marshall
This study compared the post-activation potentiation (PAP) response of the hex bar deadlift (HBD) and back squat (BS) exercises. The PAP response between different levels of athletes was also compared. Ten professional and ten amateur rugby league players performed two experimental sessions. Participants performed a countermovement jump (CMJ) before and 2, 4, 6, 8, 10, 12, 14 and 16 minutes after a conditioning activity (CA) that contained 1 set of 3 repetitions at 93% 1RM of either HBD or BS. A force platform determined peak power output (PPO), force at PPO, velocity at PPO and jump height of each CMJ...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27893478/loads-and-movement-speeds-dictate-differences-in-power-output-during-circuit-training
#4
Kirk B Roberson, Sean Chowdhari, Morgan White, Joseph F Signorile
Power training has become a common exercise intervention for improving muscle strength, power, and physical function, while reducing injury risk. Few studies, however, have evaluated acute load changes on power output during traditional resistance-training protocols. Therefore, the aim of this study was to quantify the effects of different loading patterns on power output during a single session of circuit resistance training (CRT). Nine males (age=19.4±0.9 y) and eleven females (age=20.6±1.6 y) completed three CRT protocols during separate testing sessions using seven pneumatic exercises...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27874176/effects-of-tai-chi-on-cognition-and-fall-risk-in-older-adults-with-mild-cognitive-impairment-a-randomized-controlled-trial
#5
Somporn Sungkarat, Sirinun Boripuntakul, Nipon Chattipakorn, Kanokwan Watcharasaksilp, Stephen R Lord
OBJECTIVES: To examine whether combined center- and home-based Tai Chi training can improve cognitive ability and reduce physiological fall risk in older adults with amnestic mild cognitive impairment (a-MCI). DESIGN: Randomized controlled trial. SETTING: Chiang Mai, Thailand. PARTICIPANTS: Adults aged 60 and older who met Petersen's criteria for multiple-domain a-MCI (N = 66). INTERVENTION: Three weeks center-based and 12 weeks home-based Tai Chi (50 minutes per session, 3 times per week)...
November 22, 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27870696/strength-and-conditioning-and-concurrent-training-practices-in-elite-rugby-union
#6
Thomas W Jones, Andrew Smith, Lindsay S Macnaughton, Duncan N French
Jones, TW, Smith, A, Macnaughton, LS, and French, DN. Strength and Conditioning and Concurrent Training Practices in Elite Rugby Union. J Strength Cond Res 30(12): 3354-3366, 2016-There is limited published research on strength and conditioning (S&C) practices in elite rugby union (RU). Information regarding testing batteries and programme design would provide valuable information to both applied practitioners and researchers investigating the influence of training interventions or preperformance strategies...
December 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27863188/the-use-of-2-conditioning-programs-and-the-fitness-characteristics-of-police-academy-cadets
#7
Charles Cocke, Jay Dawes, Robin Marc Orr
CONTEXT:  Police academy training must physically prepare cadets for the rigors of their occupational tasks to prevent injury and allow them to adequately perform their duties. OBJECTIVE:  To compare the effects of 2 physical training programs on multiple fitness measures in police cadets. DESIGN:  Cohort study. SETTING:  Police training academy. PATIENTS OR OTHER PARTICIPANTS:  We collected data from 70 male (age = 27...
November 18, 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27853441/no-apparent-influence-of-reward-upon-visual-statistical-learning
#8
Leeland L Rogers, Kyle G Friedman, Timothy J Vickery
Humans are capable of detecting and exploiting a variety of environmental regularities, including stimulus-stimulus contingencies (e.g., visual statistical learning) and stimulus-reward contingencies. However, the relationship between these two types of learning is poorly understood. In two experiments, we sought evidence that the occurrence of rewarding events enhances or impairs visual statistical learning. Across all of our attempts to find such evidence, we employed a training stage during which we grouped shapes into triplets and presented triplets one shape at a time in an undifferentiated stream...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27849484/the-benefits-of-high-intensity-functional-training-fitness-programs-for-military-personnel
#9
Christopher K Haddock, Walker S C Poston, Katie M Heinrich, Sara A Jahnke, Nattinee Jitnarin
INTRODUCTION: High intensity functional training (HIFT) programs are designed to address multiple fitness domains, potentially providing improved physical and mental readiness in a changing operational environment. Programs consistent with HIFT principals such as CrossFit, SEALFIT and the US Marine Corps' High Intensity Tactical Training (HITT) are increasingly popular among military personnel. The goal of HIFT programs is to produce high levels of cardiorespiratory fitness, endurance and strength that exceed those achieved by following current physical activity recommendations...
November 2016: Military Medicine
https://www.readbyqxmd.com/read/27843418/effects-of-acute-carbohydrate-ingestion-on-anaerobic-exercise-performance
#10
Ben M Krings, Jaden A Rountree, Matthew J McAllister, Patrick M Cummings, Timothy J Peterson, Brent J Fountain, JohnEric W Smith
BACKGROUND: Carbohydrate (CHO) supplementation during endurance exercises has been shown to increase performance, but there is limited research with CHO supplementation during strength and conditioning exercises. Therefore, the purpose of this study was to examine the effects of various levels of CHO ingestion during acute testing sessions requiring participants to complete a strength and conditioning program designed for collegiate athletes. METHODS: Participants (n = 7) performed a series of exercises while ingesting an amino-acid electrolyte control (CON) or CON plus varying levels of CHO...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27823901/comparison-of-effects-of-eccentric-training-eccentric-concentric-training-and-eccentric-concentric-training-combined-with-isometric-contraction-in-the-treatment-of-lateral-elbow-tendinopathy
#11
Dimitrios Stasinopoulos, Ioannis Stasinopoulos
STUDY DESIGN: RCT. INTRODUCTION: Lateral elbow tendinopathy is a common clinical condition. eccentric exercises. eccentric-concentric loading and, isometric exercises are indicated to reduce and manage tendon pain. PURPOSE OF THE STUDY: To compare the effectiveness of eccentric training, eccentric-concentric training, and eccentric-concentric training combined with isometric contraction in the treatment of lateral elbow tendinopathy. METHODS: A randomized clinical trial was carried out in a rheumatology and rehabilitation center...
November 4, 2016: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/27822169/the-effect-of-six-days-of-dietary-nitrate-supplementation-on-performance-in-trained-crossfit-athletes
#12
Samuel J Kramer, Daniel A Baur, Maria T Spicer, Matthew D Vukovich, Michael J Ormsbee
BACKGROUND: While it is well established that dietary nitrate reduces the metabolic cost of exercise, recent evidence suggests this effect is maintained 24 h following the final nitrate dose when plasma nitrite levels have returned to baseline. In addition, acute dietary nitrate was recently reported to enhance peak power production. Our purpose was to examine whether chronic dietary nitrate supplementation enhanced peak power 24 h following the final dose and if this impacted performance in a heavily power-dependent sport...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27815213/different-dimensions-of-the-prediction-error-as-a-decisive-factor-for-the-triggering-of-the-reconsolidation-process
#13
M Agustina López, M Jimena Santos, Santiago Cortasa, Rodrigo S Fernández, Martin Carbó Tano, María E Pedreira
The reconsolidation process is the mechanism by which strength and/or content of consolidated memories are updated. Prediction error (PE) is the difference between the prediction made and current events. It is proposed as a necessary condition to trigger the reconsolidation process. Here we analyzed deeply the role of the PE in the associative memory reconsolidation in the crab Neohelice granulata. An incongruence between the learned temporal relationship between conditioned and unconditioned stimuli (CS-US) was enough to trigger the reconsolidation process...
December 2016: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/27806011/do-fencers-require-a-weapon-specific-approach-to-strength-and-conditioning-training
#14
Anthony N Turner, Chris Bishop, Jon Cree, Michael Edwards, Shyam Chavda, Paul Read, David Kirby
There are three types of weapon used in Olympic fencing: the épée, foil, and sabre. The aim of this study was to determine if fencers exhibited different physical characteristics across weapons. Seventy-nine male (n = 46) and female (n = 33) national standard fencers took part in this study. Fencers from each weapon (male and female), i.e., épée (n = 19 and 10), foil (n = 22 and 14), and sabre (n = 13 and 10) were (mean ± SD) 15.9 ± 0.7 years of age, 178.5 ± 7.9 cm tall, 67.4 ± 12.2 kg in mass and had 6...
October 26, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27804917/a-review-of-raman-spectroscopy-advances-with-an-emphasis-on-clinical-translation-challenges-in-oncology
#15
Michael Jermyn, Joannie Desroches, Kelly Aubertin, Karl St-Arnaud, Wendy-Julie Madore, Etienne De Montigny, Marie-Christine Guiot, Dominique Trudel, Brian C Wilson, Kevin Petrecca, Frederic Leblond
There is an urgent need for improved techniques for disease detection. Optical spectroscopy and imaging technologies have potential for non- or minimally-invasive use in a wide range of clinical applications. The focus here, in vivo Raman spectroscopy (RS), measures inelastic light scattering based on interaction with the vibrational and rotational modes of common molecular bonds in cells and tissue. The Raman 'signature' can be used to assess physiological status and can also be altered by disease. This information can supplement existing diagnostic (e...
November 2, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27799695/the-effects-of-hand-strength-on-upper-extremity-function-and-activities-of-daily-living-in-stroke-patients-with-a-focus-on-right-hemiplegia
#16
DeokJu Kim
[Purpose] The purpose of this study was to investigate the effects of hand strength on upper extremity function and activities of daily living in patients with right hemiplegia, as well as to provide important fundamental data for rehabilitation after stroke. [Subjects and Methods] This study was conducted from May 1 to December 30, 2013, at the Department of Rehabilitation of P Hospital in Seoul and included subjects hospitalized with a diagnosis of stroke. Patients with right hemiplegia were selected, and their hand strength, upper extremity function, and activities of daily living were evaluated...
September 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27787464/the-effects-of-eccentric-contraction-duration-on-muscle-strength-power-production-vertical-jump-and-soreness
#17
Jonathan Mike, Nathan Cole, Chris Herrera, Trisha McLain, Len Kravitz, Chad Kerksick
Prior research has investigated the effects of either eccentric-only training or comparing eccentric and concentric exercise on changes related to strength and power expression, but no research to date has investigated the impact of altering the duration of either the concentric or eccentric component on these parameters. Therefore, the purpose of this study was to assess the duration of eccentric (i.e. 2-second, 4-second vs. 6-second) muscle contractions and their effect on muscle strength, power production, vertical jump and soreness using a plate-loaded barbell Smith squat exercise...
October 20, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27780155/the-importance-of-clinically-and-ethically-fine-tuning-decision-making-about-cesarean-delivery
#18
Michelle T Nguyen, Laurence B McCullough, Frank A Chervenak
In obstetric practice, each pregnant woman presents with a composite of maternal and fetal characteristics that can alter the risk of significant harm without cesarean intervention. The hospital's availability of resources and the obstetrician's training, experience, and skill level can also alter the risk of significant harm without cesarean intervention. This paper proposes a clinical ethical framework that takes these clinical and organizational factors into account, to promote a deliberative rather than simplistic approach to decision-making and counseling about cesarean delivery...
October 25, 2016: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/27774505/an-evaluation-of-the-significance-of-work-related-influence-factors-on-fitness-and-the-development-of-medical-and-orthopaedic-conditions-in-military-executives
#19
Christoph Schulze, Michael Becker, Susanne Finze, Christoph Holtherm, Jens Hinder, Andreas Lison
Occupational health promotion is an effective tool to improve the state of health of employees. As part of occupational health promotion in the German Bundeswehr, top-ranking military executives are offered a medical examination and training programme. Health-related data is collected as a basis for training and lifestyle counselling. This data was subjected to a retrospective evaluation in order to identify occupational risk factors and their correlation with cardiovascular resilience, trunk strength, and the development of orthopaedic and internal disorders...
2016: TheScientificWorldJournal
https://www.readbyqxmd.com/read/27766133/the-effect-of-a-moderately-low-and-high-carbohydrate-intake-on-crossfit-performance
#20
Kurt A Escobar, Jacobo Morales, Trisha A Vandusseldorp
CrossFit is a metabolically demanding strength and conditioning method which performance may benefit from a carbohydrate (CHO)-rich diet. This study investigated the effect of three consecutive days of high CHO intake on CrossFit performance and corresponding metabolically -related variables in strength trained individuals. Eighteen subjects with a CHO intake of <6 g/kg/day were randomly assigned into a CHO (n = 9) or control (C) group (n =9) and underwent a 9-day training protocol. During days 1, 5, and 9, performance was measured as repetitions completed during a 12 minute CrossFit workout...
2016: International Journal of Exercise Science
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