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https://www.readbyqxmd.com/read/29782305/tatami-mats-a-source-of-pitted-keratolysis-in-a-martial-arts-athlete
#1
Anamaria Balić, Zrinka Bukvić Mokos, Branka Marinović, Daniela Ledić Drvar
Dear Editor, Pitted keratolysis (PK), also known as keratosis plantaris sulcatum, is a non-inflammatory, bacterial, superficial cutaneous infection, characterized by many discrete superficial crateriform ''pits'' and erosions in the thickly keratinized skin of the weight-bearing regions of the soles of the feet (1). The disease often goes unnoticed by the patient, but when it is noticed it is because of the unbearable malodor and hyperhidrosis of the feet, which are socially unacceptable and cause great anxiety to many of the patients...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29781119/the-effect-of-lifelong-exercise-frequency-on-arterial-stiffness
#2
Shigeki Shibata, Naoki Fujimoto, Jeffrey L Hastings, Graeme Carrick-Ranson, Paul S Bhella, Christopher Hearon, Benjamin D Levine
Central arterial stiffness increases with sedentary aging. While near-daily, vigorous lifelong (>25 yr) endurance exercise training prevents arterial stiffening with aging, this rigorous routine of exercise training over a lifetime is impractical for most individuals. The aim was to examine whether a less frequent 'dose' of lifelong exercise training (4-5 sessions/wk for > 30 min) that is consistent with current physical activity recommendations elicits similar benefits on central arterial stiffening with aging...
May 20, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29777633/hypertrophic-effect-of-inhaled-beta-2-agonist-with-and-without-concurrent-exercise-training-a-randomized-controlled-trial
#3
Søren Jessen, Johan Onslev, Anders Lemminger, Vibeke Backer, Jens Bangsbo, Morten Hostrup
INTRODUCTION: Due to a high prevalence of asthma and exercise-induced bronchoconstriction in elite athletes, there is a high use of beta2 -adrenoceptor agonists (beta2 -agonists) in the athletic population. While anabolic in rodents, no study has been able to detect hypertrophy in humans after chronic beta2 -agonist inhalation. METHODS: We investigated if inhaled beta2 -agonist, terbutaline, alters body composition and metabolic rate with and without concurrent exercise training in healthy young men...
May 19, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29775985/sensorimotor-exercises-and-enhanced-trunk-function-a-randomized-controlled-trial
#4
Steffen Mueller, Tilman Engel, Juliane Mueller, Josefine Stoll, Heiner Baur, Frank Mayer
The aim of this study was to investigate the effect of a 6-week sensorimotor or resistance training on maximum trunk strength and response to sudden, high-intensity loading in athletes.Forty-three healthy, well-trained participants were randomized into sensorimotor (SMT; n=11), resistance training (RT; n=16) and control groups (CG; n=16). Treatment groups received either sensorimotor training (SMT) or resistance training (RT) for 6 weeks, 3 times a week. At baseline and after 6 weeks of intervention, participants' maximum isokinetic strength in trunk rotation and extension was tested (concentric/eccentric 30°/s)...
May 18, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29773412/athlete-s-heart-is-the-morganroth-hypothesis-obsolete
#5
Mark J Haykowsky, T Jake Samuel, Michael D Nelson, Andre La Gerche
In 1975, Morganroth and colleagues reported that the increased left ventricular (LV) mass in highly trained endurance athletes versus nonathletes was primarily due to increased end-diastolic volume while the increased LV mass in resistance trained athletes was solely due to an increased LV wall thickness. Based on the divergent remodelling patterns observed, Morganroth and colleagues hypothesised that the increased "volume" load during endurance exercise may be similar to that which occurs in patients with mitral or aortic regurgitation while the "pressure" load associated with performing a Valsalva manoeuvre (VM) during resistance exercise may mimic the stress imposed on the heart by systemic hypertension or aortic stenosis...
May 1, 2018: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29769816/the-effect-of-two-different-concurrent-training-programs-on-strength-and-power-gains-in-highly-trained-individuals
#6
Henrik Petré, Pontus Löfving, Niklas Psilander
The effects of concurrent strength and endurance training have been well studied in untrained and moderately-trained individuals. However, studies examining these effects in individuals with a long history of resistance training (RT) are lacking. Additionally, few studies have examined how strength and power are affected when different types of endurance training are added to an RT protocol. The purpose of the present study was to compare the effects of concurrent training incorporating either low-volume, high-intensity interval training (HIIT, 8-24 Tabata intervals at ~150% of VO2max ) or high-volume, medium-intensity continuous endurance training (CT, 40-80 min at 70% of VO2max ), on the strength and power of highly-trained individuals...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29768966/mood-effects-of-blood-flow-restriction-resistance-exercise-among-basketball-players
#7
Júlio C G Silva, Rodrigo R Aniceto, Leandro S Oliota-Ribeiro, Gabriel R Neto, Leonardo S Leandro, Maria S Cirilo-Sousa
This study compared the acute effects of resistance exercise with and without blood flow restriction (BFR) on basketball players' mood states. A total of 11 male basketball players (mean age = 19.9, SD = 2.8 years; mean height = 180.8, SD = 7.8 cm; mean weight = 71.1, SD = 9.1 kg; mean body mass index = 22.1, SD = 1.9 kg/m2 ) were randomly assigned to two experimental conditions: (a) low-load resistance exercise with BFR (LLRE + BFR) and high-load resistance exercise (HLRE) without BFR...
January 1, 2018: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/29742745/validity-and-reliability-of-a-wearable-inertial-sensor-to-measure-velocity-and-power-in-the-back-squat-and-bench-press
#8
Samuel T Orange, James W Metcalfe, Andreas Liefeith, Phil Marshall, Leigh A Madden, Connor R Fewster, Rebecca V Vince
Orange, ST, Metcalfe, JW, Liefeith, A, Marshall, P, Madden, LA, Fewster, CR, and Vince, RV. Validity and reliability of a wearable inertial sensor to measure velocity and power in the back squat and bench press. J Strength Cond Res XX(X): 000-000, 2018-This study examined the validity and reliability of a wearable inertial sensor to measure velocity and power in the free-weight back squat and bench press. Twenty-nine youth rugby league players (18 ± 1 years) completed 2 test-retest sessions for the back squat followed by 2 test-retest sessions for the bench press...
May 8, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29741443/the-effect-of-individualised-sprint-training-in-elite-female-team-sport-athletes-a-pilot-study
#9
Elvir Rakovic, Gøran Paulsen, Christian Helland, Ola Eriksrud, Thomas Haugen
This study aimed to evaluate whether an individualised sprint-training program was more effective in improving sprint performance in elite team-sport players compared to a generalised sprint-training program. Seventeen elite female handball players (23 ± 3 y, 177 ± 7 cm, 73 ± 6 kg) performed two weekly sprint training sessions over eight weeks in addition to their regular handball practice. An individualised training group (ITG, n = 9) performed a targeted sprint-training program based on their horizontal force-velocity profile from the pre-training test...
May 9, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29721213/anabolic-androgenic-steroids-and-carcinogenicity-focusing-on-leydig-cell-a-literature-review
#10
REVIEW
Monica Salerno, Orazio Cascio, Giuseppe Bertozzi, Francesco Sessa, Antonietta Messina, Vincenzo Monda, Luigi Cipolloni, Antonio Biondi, Aurora Daniele, Cristoforo Pomara
Anabolic androgenic steroids (AAS) are some of the most common drugs used among athletes, frequently in combination with resistance training, to improve physical performance or for aesthetic purpose. A great number of scientific reports showed the detrimental effects of anabolic androgenic steroids on different organs and tissues. In this literature review, we analyzed the AAS-mediated carcinogenicity, focusing on Leydig cell tumor. AAS-induced carcinogenicity can affect DNA transcription through two pathways...
April 10, 2018: Oncotarget
https://www.readbyqxmd.com/read/29657436/upper-extremity-weightlifting-injuries-diagnosis-and-management
#11
REVIEW
Kayvon Golshani, Mark E Cinque, Peter O'Halloran, Kenneth Softness, Laura Keeling, J Ryan Macdonell
Common upper extremity injuries in resistance training athletes include muscle strains, ligament sprains, pectoralis major tendon ruptures, distal biceps tendon ruptures, and chronic shoulder pain and capsulolabral injuries. While each injury is unique in its specific anatomic location and mechanism, each is preventable with proper exercise technique, safety and maintenance of muscle balance. Conservative treatment is the therapeutic modality of choice and these injuries generally resolve with workout modification, appropriate recovery, anti-inflammatory medication, and physical therapy...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29590086/presence-of-spotters-improves-bench-press-performance-a-deception-study
#12
Andrew Sheridan, David C Marchant, Emily L Williams, Hollie S Jones, Phil A Hewitt, S Andy Sparks
Sheridan, A, Marchant, DC, Williams, EL, Jones, HS, Hewitt, PA, and Sparks, SA. Presence of spotters improves bench press performance: a deception study. J Strength Cond Res XX(X): 000-000, 2017-Resistance exercise is a widely used method of physical training in both recreational exercise and athletic populations. The use of training partners and spotters during resistance exercise is widespread, but little is known about the effect of the presence of these individuals on exercise performance. The purpose of the current study was to investigate the effect of spotter presence on bench press performance...
October 24, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29570579/moderate-load-resisted-sprints-do-not-improve-subsequent-sprint-performance-in-varsity-level-sprinters
#13
Kyle M A Thompson, Alanna K Whinton, Shane Ferth, Lawrence L Spriet, Jamie F Burr
Resisted sprint training (RST) is commonly used for performance enhancement in athletics and team sports to develop acceleration ability. Evidence suggests that RST may be effective as a short-term intervention to improve successive sprints. While these improvements have been measured in team sport athletes, limited research has considered the acute effects of RST training in sprint-trained athletes. Therefore, the aim of the current study was to determine if performing RST with varsity level sprinters using sled-equivalent resistive loads of ∼45% body mass results in a potentiation effect, leading to improvements in subsequent maximal sprint performance over 0-5 m and 0-20 m...
March 22, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29563884/symptoms-of-anxiety-and-depression-in-young-athletes-using-the-hospital-anxiety-and-depression-scale
#14
Stephanie Weber, Christian Puta, Melanie Lesinski, Brunhild Gabriel, Thomas Steidten, Karl-Jürgen Bär, Marco Herbsleb, Urs Granacher, Holger H W Gabriel
Elite young athletes have to cope with multiple psychological demands such as training volume, mental and physical fatigue, spatial separation of family and friends or time management problems may lead to reduced mental and physical recovery. While normative data regarding symptoms of anxiety and depression for the general population is available (Hinz and Brähler, 2011), hardly any information exists for adolescents in general and young athletes in particular. Therefore, the aim of this study was to assess overall symptoms of anxiety and depression in young athletes as well as possible sex differences...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29557889/feasibility-and-effect-of-cervical-resistance-training-on-head-kinematics-in-youth-athletes-a-pilot-study
#15
James T Eckner, Alireza Goshtasbi, Kayla Curtis, Aliaksandra Kapshai, Erik Myyra, Lea M Franco, Michael Favre, Jon A Jacobson, James A Ashton-Miller
Greater neck girth and strength may be associated with a lower risk of sport-related concussion due to mitigation of head accelerations by the neck. However, neck strengthening exercise remains unstudied in youth athletes. Therefore, this pilot study assessed the feasibility and effect of targeted neck strengthening exercises in youth athletes. Seventeen participants were allocated to perform 8-wk manual resistance-based neck strengthening (n = 13) or control resistance exercise (n = 4) programs. Before and after the intervention, participants completed laboratory-based assessments of neck size, strength, and head kinematics during standardized test loading in each plane of motion...
April 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29547489/the-impact-of-power-clean-ability-and-training-age-on-adaptations-to-weightlifting-style-training
#16
Lachlan P James, Paul Comfort, Timothy J Suchomel, Vincent G Kelly, Emma M Beckman, G Gregory Haff
The purpose of this investigation was to determine whether weightlifting actions are a viable method for improving athletic performance amongst weaker, inexperienced lifters when compared to individuals with a greater power clean result, and hence weightlifting ability and experience. Two groups of males with distinctly different power clean performances (higher performance (HP): N = 8; BM = 78.1±4.0 kg; 1RM PC = 1.08±0.09 kgBM; lower performance (LP): N = 8; BM=82.6±14.0 kg; 1RM PC=0.78±0.1 kg·BM) and resistance training age (HP: resistance training experience=3...
March 14, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29532291/the-effect-of-cyp1a2-genotype-on-the-ergogenic-properties-of-caffeine-during-resistance-exercise-a-randomized-double-blind-placebo-controlled-crossover-study
#17
Rahman Rahimi
AIM: The purpose of this study was to examine the effect of CYP1A2 -163C>A polymorphism on the ergogenic effects of caffeine supplementation during a resistance exercise (RE) session. METHODS: In a randomized, double-blind, placebo (PL)-controlled, crossover study, 30 resistance-trained men took part in two RE sessions (three sets to failure at 85% of one repetition maximum, 2-min rest between sets), including bench press (BP), leg press (LP), seated cable row, and shoulder press (SP) following caffeine (CAF) (6 mg kg-1 ) or PL (6 mg kg-1 of maltodextrin) ingestion 1 h prior to the trial...
March 12, 2018: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/29528956/effects-of-heavy-squat-training-on-a-vibration-platform-on-maximal-strength-and-jump-performance-in-resistance-trained-men
#18
Roger L Hammer, Joshua T Linton, Adam M Hammer
The purpose of this investigation was to determine maximal strength and jump performance outcomes of heavy squat training on a low-amplitude (<1.0 mm peak-to-peak) vibration platform (VP). Nineteen recreationally resistance-trained college-aged men (22.3 ± 1.66 years) completed the 6-week study. Participants were randomly assigned to one of two training groups: SQT (n = 10) performed conventional back squats on the floor; SQTV (n = 9) performed back squats on the VP. Supervised training took place over 12 sessions (2 days/week) which utilized an aggressive strength development protocol (85-95 % 1-RM), which was identically followed by both groups...
March 6, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29523284/resistance-exercise-and-sports-performance-the-minority-report
#19
Samuel L Buckner, Matthew B Jessee, Scott J Dankel, Kevin T Mattocks, Takashi Abe, Jeremy P Loenneke
Resistance exercise is typically performed to increase both muscle size and strength and is regularly incorporated into training programs for sports performance. Presumably, the exercise would be expected to increase the force producing capabilities of skeletal muscle, which may have subsequent influence on various sports related abilities. Interestingly, few studies are designed to examine sports related benefits of resistance exercise while including a proper control group to account for adaptations to simply performing the sports related task...
April 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29520462/cardiac-magnetic-resonance-assessment-of-the-structural-and-functional-cardiac-adaptations-to-soccer-training-in-school-aged-male-children
#20
Marzena Barczuk-Falęcka, Łukasz A Małek, Hubert Krysztofiak, Danuta Roik, Michał Brzewski
Physical training is associated with changes in cardiac morphology called the "athlete's heart", which has not been sufficiently studied in children. The aim of the study was to analyze cardiac adaptation to exercise in pre-adolescent soccer players. Thirty-six soccer players (mean age 10.1 ± 1.4 years) and 24 non-athlete male controls (10.4 ± 1.7 years) underwent cardiac magnetic resonance. Measurements of myocardial mass, end-diastolic and end-systolic volume, stroke volume and ejection fraction for left and right ventricle (LV, RV) were performed...
June 2018: Pediatric Cardiology
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