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https://www.readbyqxmd.com/read/28217573/return-to-sports-after-acl-reconstruction-a-new-functional-test-protocol
#1
Gian Nicola Bisciotti, Alessandro Quaglia, Andrea Belli, Giulia Carimati, Piero Volpi
BACKGROUND: In literature, there are lack of studies proposing clear and rationally designed test battery to be performed after an ACL reconstruction. METHODS: From 2006 to 2015, 80 football players were subjected, after ACL reconstruction, to a newly conceived test battery analyzing: Isometric and isokinetic force productionThe different phases during the jumpThe correct control of the landing phase after jumpThe control of valgus during landing after jump and cutting movements...
October 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28217417/biomechanical-differences-in-brazilian-jiu-jitsu-athletes-the-role-of-combat-style
#2
Pedro Olavo de Paula Lima, Alane Almeida Lima, Anita Camila Sampaio Coelho, Yuri Lopes Lima, Gabriel Peixoto Leão Almeida, Márcio Almeida Bezerra, Rodrigo Ribeiro de Oliveira
BACKGROUND: Brazilian Jiu-Jitsu (BJJ) athletes can be divided into two combat styles: pass fighters (PFs) and guard fighters (GFs). Flexibility of the posterior chain muscles is highly necessary in these athletes, especially in GFs. On the other hand, isometric strength of the trunk extensors is required in PFs. Handgrip strength is important in holding the kimono of the opponent, and symmetrical lower-limb strength is important for the prevention of injuries due to the overload caused by training...
February 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28215966/does-patient-perception-differ-following-adductor-canal-block-and-femoral-nerve-block-in-total-knee-arthroplasty-a-simultaneous-bilateral-randomized-study
#3
Hyun J Koh, In J Koh, Man S Kim, Keun Y Choi, Hyeon U Jo, Yong In
BACKGROUND: Femoral nerve block (FNB) has been used as part of the multimodal analgesia after total knee arthroplasty (TKA), but leads to weakness in the quadriceps muscles. Recently, adductor canal block (ACB) was reported to provide effective pain relief while sparing the strength of the quadriceps. This simultaneous bilateral randomized study investigated whether patients perceived differences between ACB and the FNB after same-day bilateral TKA. METHODS: We performed a prospective simultaneous bilateral randomized study in 50 patients scheduled to undergo same-day bilateral TKA...
January 26, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28215595/gas-exchange-kinetics-following-concentric-eccentric-isokinetic-arm-and-leg-exercise
#4
U Drescher, S Mookerjee, A Steegmanns, A Knicker, U Hoffmann
PURPOSE: To evaluate the effects of exercise velocity (60, 150, 240 deg·s(-1)) and muscle mass (arm vs leg) on changes in gas exchange and arterio-venous oxygen content difference (avDO2) following high-intensity concentric-eccentric isokinetic exercise. METHODS: Fourteen subjects (26.9±3.1years) performed a 3×20-repetition isokinetic exercise protocol. Recovery beat-to-beat cardiac output (CO) and breath-by-breath gas exchange were recorded to determine post-exercise half-time (t1/2) for oxygen uptake (V'O2pulm), carbon dioxide output (V'CO2pulm), and ventilation (V'E)...
February 16, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28213750/effect-of-an-acute-dose-of-omega-3-fish-oil-following-exercise-induced-muscle-damage
#5
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...
February 17, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28213167/the-effect-of-peripheral-neuropathy-on-lower-limb-muscle-strength-in-diabetic-individuals
#6
Jean P Ferreira, Cristina D Sartor, Ângela M O Leal, Isabel C N Sacco, Tatiana O Sato, Ivana L Ribeiro, Alice S Soares, Jonathan E Cunha, Tania F Salvini
BACKGROUND: Skeletal muscle strength is poorly described and understood in diabetic participants with diabetic peripheral neuropathy. This study aimed to investigate the extensor and flexor torque of the knee and ankle during concentric, eccentric, and isometric contractions in men with diabetes mellitus type 2 with and without diabetic peripheral neuropathy. METHODS: Three groups of adult men (n=92), similar in age, body mass index, and testosterone levels, were analyzed: 33 non-diabetic controls, 31 with type 2 diabetes mellitus, and 28 with diabetic peripheral neuropathy...
February 9, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28211826/axial-rigidity-is-related-to-the-risk-of-falls-in%C3%A2-patients-with-parkinson-s-disease
#7
Roberto Cano-de-la-Cuerda, Lydia Vela-Desojo, Juan Carlos Miangolarra-Page, Yolanda Macías-Maías
BACKGROUND: Rigidity is a cardinal symptom of Parkinson's disease (PD) and is often clinically assessed by passively flexing and extending a patient's limb. Objective measurements had been employed to examine rigidity in PD subjects, including wrist, elbow or knee. OBJECTIVE: This study aimed to investigate the relationship between an objective measurement of trunk rigidity and risk of falls in patients with mild to moderate PD. METHODS: An isokinetic dynamometer Biodex System 3 was employed to assess trunk rigidity in 36 patients with mild to moderate PD at a University Department in a cross-sectional study...
February 13, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28210647/association-of-quadriceps-strength-and-psychosocial-factors-with-single-leg-hop-performance-in-patients-with-meniscectomy
#8
Chao-Jung Hsu, Steven Z George, Terese L Chmielewski
BACKGROUND: Clinicians use the single-leg hop test to assess readiness for return to sports after knee injury. Few studies have reported the results of single-leg hop testing after meniscectomy. Additionally, the contributions of impairments in quadriceps strength and psychosocial factors to single-leg hop performance are unknown. PURPOSE: To compare single-leg hop performance (distance and landing mechanics) between limbs and to examine the association of single-leg hop performance with quadriceps strength and psychosocial factors in patients with meniscectomy...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28210042/the-effects-of-new-taping-methods-designed-to-increase-muscle-strength
#9
Tsutomu Fukui, Yuko Otake, Takashi Kondo
[Purpose] Although there are several studies on the use of elastic tape to influence muscle strength, results are contradictory and controversial. Our previous studies based on the sliding mechanism between superficial fascia and subcutaneous tissue may help the muscle strength. The purpose of this study was to confirm the effects of new taping methods on muscle strength. [Subjects and Methods] Sixteen healthy male participants took part in this study. Tape was applied on the right gluteus maximus and hip extension strength was determined by an isokinetic evaluation (30°/sec, concentric mode, four conditions)...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28207840/using-the-hephaistos-orthotic-device-to-study-countermeasure-effectiveness-of-neuromuscular-electrical-stimulation-and-dietary-lupin-protein-supplementation-a-randomised-controlled-trial
#10
Jochen Zange, Kathrin Schopen, Kirsten Albracht, Darius A Gerlach, Petra Frings-Meuthen, Nicola A Maffiuletti, Wilhelm Bloch, Jörn Rittweger
PURPOSE: The present study investigated whether neuromuscular electrical stimulation for 20 min twice a day with an electrode placed over the soleus muscle and nutritional supplementation with 19 g of protein rich lupin seeds can reduce the loss in volume and strength of the human calf musculature during long term unloading by wearing an orthotic unloading device. METHODS: Thirteen healthy male subjects (age of 26.4 ± 3.7 years) wore a Hephaistos orthosis one leg for 60 days during all habitual activities...
2017: PloS One
https://www.readbyqxmd.com/read/28203600/do-muscle-strength-deficits-of-the-uninvolved-hip-and-knee-exist-in-young-athletes-before-anterior-cruciate-ligament-reconstruction
#11
Joseph Hannon, Sharon Wang-Price, Shiho Goto, J Craig Garrison, James M Bothwell
BACKGROUND: Muscle strength of the involved limb is known to be decreased after injury. Comparison with the uninvolved limb has become standard of practice to measure progress and for calculation of limb symmetry indices (LSIs) to determine readiness to return to sport. However, some literature suggests strength changes in the uninvolved limb also are present after lower extremity injury. PURPOSE: To examine the uninvolved limb strength in a population of adolescent athletes after an anterior cruciate ligament (ACL) injury and compare strength values with those of the dominant limb in a healthy control group...
January 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28203599/surgical-management-of-rectus-femoris-avulsion-among-professional-soccer-players
#12
Bertrand Sonnery-Cottet, Nuno Camelo Barbosa, Sanesh Tuteja, Roland Gardon, Matt Daggett, Damien Monnot, Charles Kajetanek, Mathieu Thaunat
BACKGROUND: Rectus femoris injuries are common among athletes, especially in kicking sports such as soccer; however, proximal rectus femoris avulsions in athletes are a relatively rare entity. PURPOSE/HYPOTHESIS: The purpose of this study was to describe and report the results of an original technique of surgical excision of the proximal tendon remnant followed by a muscular suture repair. Our hypothesis was that this technique limits the risk of recurrence in high-level athletes and allows for rapid recovery without loss of quadriceps strength...
January 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28198602/the-profile-of-upper-extremity-muscular-strength-in-female-wheelchair-basketball-players-a-pilot-study
#13
Bahar Külünkoğlu, Yasemin Akkubak, Nevin Ergun
BACKGROUND: The purpose of this study was to analyze and compare the profile of upper extremity muscle strength in female wheelchair basketball players with that of sex-matched non-disabled controls. METHODS: Nineteen female subjects were enrolled in this study. These were divided into two groups. Group 1 (n=10) consisted of wheelchair basketball players and Group 2 (n=9) of non-disabled individuals. Muscular strength in the shoulder was measured using an isokinetic dynamometer...
February 14, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28198113/early-body-composition-but-not-body-mass-is-associated-with-future-accelerated-decline-in-muscle-quality
#14
Elisa Fabbri, Nancy Chiles Shaffer, Marta Gonzalez-Freire, Michelle D Shardell, Marco Zoli, Stephanie A Studenski, Luigi Ferrucci
BACKGROUND: Muscle quality (MQ) or strength-to-mass ratio declines with aging, but the rate of MQ change with aging is highly heterogeneous across individuals. The identification of risk factors for accelerated MQ decline may offer clues to identity the underpinning physiological mechanisms and indicate targets for prevention and treatment. Using data from the Baltimore Longitudinal Study of Aging, we tested whether measures of body mass and body composition are associated with differential rates of changes in MQ with aging...
February 14, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28198046/muscle-fatigability-and-depressive-symptoms-in-later-life
#15
Patrick J Brown, Dala Badreddine, Steven P Roose, Bret Rutherford, Hilsa N Ayonayon, Kristine Yaffe, Eleanor M Simonsick, Bret Goodpaster
OBJECTIVE: Fatigability is the degree to which performance decreases during a specific activity of a given intensity and duration. Depression is known to heighten subjective fatigue, but whether its association with physical fatigability is unknown. Further, whether fatigability is a precursor or risk factor for the development of subsequent depressive symptoms is also unclear. METHODS: Data are from the Health Aging and Body Composition Study with fatigability assessed using isokinetic dynamometry of the knee extensors at year 3, and depressive symptoms ascertained longitudinally using the Center for Epidemiologic Studies Depression (CES-D) scale...
February 15, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28185300/whole-body-vibration-training-as-a-workplace-based-sports-activity-for-employees-with-chronic-low-back-pain
#16
Tobias S Kaeding, Annika Karch, Rebecca Schwarz, Tatjana Flor, Torge-Christian Wittke, Momme Kück, Georg Böselt, Uwe Tegtbur, Lothar Stein
INTRODUCTION: The goal of this randomized and controlled study is to examine whether whole-body vibration (WBV) training is able to reduce back pain and physical disability in seated working office employees with chronic low-back pain in a real-world setting. MATERIALS AND METHODS: A total of 41 subjects (68.3% female/mean age 45.5 ± 9.1 years/mean BMI 26.6 ± 5.2) were randomly allocated to an intervention group (INT (n= 21)) or a control group (CON (n=20). The INT participated in WBV training 2...
February 10, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28182968/measuring-postural-control-during-mini-squat-posture-in-men-with-early-knee-osteoarthritis
#17
M Petrella, K Gramani-Say, P R M S Serrão, G C Lessi, J A Barela, R P Carvalho, S M Mattiello
Studies have suggested a compromised postural control in individuals with knee osteoarthritis (OA) evidenced by larger and faster displacement of center of pressure (COP). However, quantification of postural control in the mini-squat posture performed by patients with early knee OA and its relation to muscle strength and self-reported symptoms have not been investigated. The main aim of this cross-sectional, observational, controlled study was to determine whether postural control in the mini-squat posture differs between individuals with early knee OA and a control group (CG) and verify the relation among knee extensor torque (KET) and self-reported physical function, stiffness and pain...
February 6, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28182531/relationships-of-functional-tests-following-acl-reconstruction-exploratory-factor-analyses-of-the-lower-extremity-assessment-protocol
#18
Melissa DiFabio, Lindsay V Slater, Grant Norte, John Goetschius, Joseph M Hart, Jay Hertel
CONTEXT: After ACL reconstruction (ACLR), deficits are often assessed using a variety of functional tests, which can be time consuming. It is unknown whether these tests provide redundant or unique information. OBJECTIVE: To explore relationships between components of a battery of functional tests, the Lower Extremity Assessment Protocol (LEAP), to aid in developing the most informative, concise battery of tests for evaluating ACLR patients. DESIGN: Descriptive, cross-sectional...
February 9, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28181388/muscle-strength-mediates-the-relationship-between-mitochondrial-energetics-and-walking-performance
#19
Ariel C Zane, David A Reiter, Michelle Shardell, Donnie Cameron, Eleanor M Simonsick, Kenneth W Fishbein, Stephanie A Studenski, Richard G Spencer, Luigi Ferrucci
Skeletal muscle mitochondrial oxidative capacity declines with age and negatively affects walking performance, but the mechanism for this association is not fully clear. We tested the hypothesis that impaired oxidative capacity affects muscle performance and, through this mechanism, has a negative effect on walking speed. Muscle mitochondrial oxidative capacity was measured by in vivo phosphorus magnetic resonance spectroscopy as the postexercise phosphocreatine resynthesis rate, kPCr , in 326 participants (154 men), aged 24-97 years (mean 71), in the Baltimore Longitudinal Study of Aging...
February 9, 2017: Aging Cell
https://www.readbyqxmd.com/read/28181266/improvement-in-muscle-strength-with-low-load-isotonic-training-depends-on-fascicle-length-but-not-joint-angle
#20
Hiroki Tanaka, Tome Ikezoe, Masatoshi Nakamura, Ko Yanase, Kosuke Fujita, Yoshiki Motomura, Ken Kusano, Kojiro Araki, Jun Umehara, Junya Saeki, Katsuyuki Morishita, Noriaki Ichihashi
INTRODUCTION: This study investigates whether low-load isotonic training will elicit greater improvement in muscle strength at the same fascicle length, rather than at the same joint angle. METHODS: 16 healthy men (24.1 ± 2.5 years) were randomly divided into intervention and control groups. The pre- and post-training, maximum isometric and isokinetic strengths, and the fascicle length of medial gastrocnemius muscle were measured. Isotonic resistance training at 15° to 30° ankle plantar flexion at low intensity was conducted for 4 weeks...
February 9, 2017: Muscle & Nerve
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