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https://www.readbyqxmd.com/read/28929165/proprioception-mediates-the-association-between-systemic-inflammation-and-muscle-weakness-in-patients-with-knee-osteoarthritis-results-from-the-amsterdam-osteoarthritis-cohort
#1
Tomasz Cudejko, Martin van der Esch, Marike van der Leeden, Jasmijn Holla, Leo D Roorda, Willem Lems, Joost Dekker
OBJECTIVES: To determine whether systemic inflammation is associated with poor proprioception; to confirm that systemic inflammation is associated with muscle weakness; and to determine whether poor proprioception mediates the association between systemic inflammation and muscle weakness in knee osteoarthritis. DESIGN: Cross-sectional study. SUBJECTS: A total of 689 participants with knee osteoarthritis from the Amsterdam Osteoarthritis (AMS-OA) cohort...
September 20, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28927901/age-related-reductions-in-muscle-quality-influence-the-relative-differences-in-strength-and-power
#2
Gena R Gerstner, Hayden K Giuliani, Jacob A Mota, Eric D Ryan
Age-related changes in the relative differences in isokinetic strength and power may reflect fast twitch fiber function. We aimed to examine the influence of muscle quality on the relative differences in strength and power in younger and older men. Twenty younger (20.1±1.5yrs) and 20 older (69.5±3.1yrs) healthy, recreationally active men performed two plantarflexion maximal voluntary isometric contractions (MVCs) and three maximal concentric isokinetic contractions at a slow (0.52rad·s(-1)) and fast (2.09rad·s(-1)) velocity...
September 16, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28926379/tendon-length-calf-muscle-atrophy-and-strength-deficit-after-acute-achilles-tendon-rupture-long-term-follow-up-of-patients-in-a-previous-study
#3
Juuso Heikkinen, Iikka Lantto, Juuso Piilonen, Tapio Flinkkilä, Pasi Ohtonen, Pertti Siira, Vesa Laine, Jaakko Niinimäki, Ari Pajala, Juhana Leppilahti
BACKGROUND: In this prospective study, we used magnetic resonance imaging (MRI) to assess long-term Achilles tendon length, calf muscle volume, and muscle fatty degeneration after surgery for acute Achilles tendon rupture. METHODS: From 1998 to 2001, 60 patients at our center underwent surgery for acute Achilles tendon rupture followed by early functional postoperative rehabilitation. Fifty-five patients were reexamined after a minimum duration of follow-up of 13 years (mean, 14 years), and 52 of them were included in the present study...
September 20, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28922313/lateral-perturbation-induced-stepping-strategies-and-predictors-in-persons-poststroke
#4
Vicki L Gray, Chieh-Ling Yang, Sandy McCombe Waller, Mark W Rogers
BACKGROUND AND PURPOSE: Falls commonly occur as weight is transferred laterally, and impaired reactive stepping responses are associated with falls after stroke. The purpose of this study was to examine differences in and the determinants of mediolateral (M-L) protective stepping strategies when pulled off balance toward the paretic and nonparetic sides. METHODS: Eighteen individuals more than 6 months poststroke were pulled in the M-L direction by a lateral waist-pull perturbation system...
October 2017: Journal of Neurologic Physical Therapy: JNPT
https://www.readbyqxmd.com/read/28918506/young-athletes-after-acl-reconstruction-with-quadriceps-strength-asymmetry-at-the-time-of-return-to-sport-demonstrate-decreased-knee-function-1%C3%A2-year-later
#5
Matthew P Ithurburn, Alex R Altenburger, Staci Thomas, Timothy E Hewett, Mark V Paterno, Laura C Schmitt
PURPOSE: Quadriceps femoris (QF) strength deficits at return-to-sport (RTS) after ACL reconstruction (ACLR) contribute to decreased knee function at the same time point. However, the impact of QF strength at RTS on longitudinal function has not been examined. The purpose of this study was to test the hypothesis that young athletes after ACLR with QF strength asymmetry at RTS would demonstrate decreased knee-related function and lower proportions of functional recovery at 1 year post-RTS compared to young athletes following ACLR with nearly symmetric QF strength at RTS...
September 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28918423/non-discriminant-relationships-between-leg-muscle-strength-mass-and-gait-performance-in-healthy-young-and-old-adults
#6
Thomas Muehlbauer, Urs Granacher, Ron Borde, Tibor Hortobágyi
BACKGROUND: Gait speed declines with increasing age, but it is unclear if gait speed preferentially correlates with leg muscle strength or mass. OBJECTIVE: We determined the relationship between gait speed and (1) leg muscle strength measured at 3 lower extremity joints and (2) leg lean tissue mass (LTM) in healthy young (age: 25 years, n = 20) and old (age: 70 years, n = 20) adults. METHODS: Subjects were tested for maximal isokinetic hip, knee, and ankle extension torque, leg LTM by bioimpedance, and gait performance (i...
September 16, 2017: Gerontology
https://www.readbyqxmd.com/read/28916871/strength-and-functional-symmetry-is-associated-with-post-operative-rehabilitation-in-patients-following-anterior-cruciate-ligament-reconstruction
#7
Jay R Ebert, Peter Edwards, Luke Yi, Brendan Joss, Timothy Ackland, Richard Carey-Smith, Jens-Ulrich Buelow, Ben Hewitt
PURPOSE: To investigate strength and functional symmetry during common tests in patients after anterior cruciate ligament reconstruction (ACLR), and its association with post-operative rehabilitation. METHODS: At a median 11.0 months post-surgery (range 10-14), 111 ACLR patients were assessed. A rehabilitation grading tool was employed to evaluate the duration and supervision of rehabilitation, as well as whether structured jumping, landing and agility exercises were undertaken...
September 15, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28914503/testosterone-therapy-preserves-muscle-strength-and-power-in-aging-men-with-type-2-diabetes-a-randomized-controlled-trial
#8
L V Magnussen, L G Hvid, A P Hermann, D M Hougaard, B Gram, P Caserotti, M S Andersen
The purpose of the study was to evaluate whether testosterone replacement therapy improves muscle mechanical and physical function in addition to increasing lean leg mass and total lean body mass in aging men with type 2 diabetes and lowered bio-available testosterone (BioT) levels. Thirty-nine men aged 50-70 years with type 2 diabetes and BioT levels <7.3 nmol/L were included from an academic tertiary-care medical center. Patients were randomized to testosterone gel (testosterone replacement therapy, n = 20) or placebo (n = 19) for 24 weeks, applying a double-blinded design...
September 2017: Andrology
https://www.readbyqxmd.com/read/28910200/comparison-of-two-%C3%AE-alanine-dosing-protocols-on-muscle-carnosine-elevations
#9
David D Church, Jay R Hoffman, Alyssa N Varanoske, Ran Wang, Kayla M Baker, Michael B La Monica, Kyle S Beyer, Sarah J Dodd, Leonardo P Oliveira, Roger C Harris, David H Fukuda, Jeffrey R Stout
OBJECTIVE: β-alanine (BA) is a nonproteogenic amino acid that combines with histidine to form carnosine. The amount taken orally in individual doses, however, is limited due to symptoms of paresthesia that are associated with higher doses. The use of a sustained-release formulation has been reported to reduce the symptoms of paresthesia, suggesting that a greater daily dose may be possible. The purpose of the present study was to determine whether increasing the daily dose of BA can result in a similar increase in muscle carnosine in a reduced time...
September 14, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28904638/functional-outcomes-following-non-operative-versus-operative-treatment-of-clavicle-fractures-in-adolescents
#10
M M Herzog, R C Whitesell, L M Mac, M L Jackson, B A Culotta, J R Axelrod, M T Busch, S C Willimon
PURPOSE: Superiority of non-operative versus operative treatment of clavicle shaft fractures remains unclear. We aimed to assess shoulder function in adolescents following shortened clavicle fracture and compare operative versus non-operative treatment. METHODS: Patients aged 12 to 18 years at the time of fracture and minimum 1.5 years post injury were identified for this institutional review board (IRB)-approved study. For this retrospective cohort study, patients were frequency-matched for age, gender, shortening of the clavicle fracture and activity level...
August 1, 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28902110/asymmetrie-of-maximum-trunk-hand-and-leg-in-comparison-of-volleyball-and-fitness-athletes
#11
Klaus Mattes, Bettina Wollesen, Stefanie Manzer
Playing volleyball and corresponding training loads lead to specific strains and might result in asymmetric muscle pattern. The study aimed to identify volleyball specific maximum bilateral strength asymmetries in comparison to fitness athletes. The cross-sectional study design compared an age-matched male volleyball group (n= 23; 27.9 ± 5 years) with a fitness group (n= 30; 26.3 ± 3 years). The participants performed an isometric maximum handgrip strength test followed by two isokinetic concentric maximum strength tests to determine the performance capacity of the axial trunk rotators (left-right) and bilateral leg extensors...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28899822/early-strength-recovery-after-anterior-cruciate-ligament-reconstruction-using-the-fascia-lata
#12
Gregory Haillotte, Alexandre Hardy, Benjamin Granger, Thibaut Noailles, Fréderic Khiami
INTRODUCTION: After undergoing anterior cruciate ligament (ACL) reconstruction, patients must recover at least 80% of their hamstring and quadriceps strength to be able to return to sports without risk to the graft. Harvesting of the patellar tendon leads to large deficits in quadriceps strength, while harvesting the hamstring tendons leads to large deficits in hamstring strength. However, there are no published studies on the strength deficit after ACL reconstruction with the fascia lata...
September 9, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28899656/greater-ankle-strength-anaerobic-and-aerobic-capacity-and-agility-predict-ground-combat-military-occupational-school-graduation-in-female-marines
#13
Katelyn Fleishman Allison, Karen A Keenan, Meleesa F Wohleber, Katherine A Perlsweig, Erin R Pletcher, Mita Lovalekar, Kim Beals, Lawrence C Coleman, Bradley C Nindl
Women can serve in all military occupational specialties (MOS); however, musculoskeletal and physiological characteristics that predict successful completion of ground combat MOS schools by female Marines are unknown. OBJECTIVES: To determine which demographic, musculoskeletal, and physiological characteristics predict graduation from infantry and vehicle ground combat MOS schools in female Marines. DESIGN: Prospective cohort study. METHODS: Prior to MOS school, the following were assessed in 62 female Marines (22...
August 24, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28886473/strategies-for-injury-prevention-in-brazilian-football-perceptions-of-physiotherapists-and-practices-of-premier-league-teams
#14
Maurício Couto Meurer, Marcelo Faria Silva, Bruno Manfredini Baroni
OBJECTIVES: To describe the physiotherapists perceptions and the current practices for injury prevention in elite football (soccer) clubs in Brazil. DESIGN: Cross-sectional study. SETTING: Group of Science in Sports & Exercise, Federal University of Healthy Sciences of Porto Alegre (Brazil). PARTICIPANTS: 16 of the 20 football clubs involved in the Brazilian premier league 2015. MAIN OUTCOME MEASURES: Physiotherapists answered a structured questionnaire...
July 25, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28885356/correlations-between-lumbar-neuromuscular-function-and-pain-lumbar-disability-in-patients-with-nonspecific-low-back-pain-a-cross-sectional-study
#15
Haoyu Hu, Yili Zheng, Xueqiang Wang, Binglin Chen, Yulin Dong, Juan Zhang, Xiaochen Liu, Di Gong
This study aims to examine the correlations between lumbar neuromuscular function and pain, lumbar disability in patients with nonspecific low back pain (NSLBP).Ninety patients, with ages 18 to 37 years old, with NSLBP were recruited in this study. The lumbar neuromuscular function was tested by the CON-TREX multijoint isokinetic test and training machine. This study uses the visual analog scale (VAS) and Roland-Morris Disability Questionnaire (RMDQ) to evaluate the pain and the dysfunction index of patients who have low back pain, respectively...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28881389/comparisons-in-fluctuation-of-muscle-strength-and-function-in-patients-with-immune-mediated-neuropathy-treated-with-intravenous-versus-subcutaneous-immunoglobulin
#16
Ingelise Christiansen, Lars H Markvardsen, Johannes Jakobsen
INTRODUCTION: Variation of muscle strength and function have not been studied in patients with chronic inflammatory demyelinating polyneuropathy and multifocal motor neuropathy whose treatment regimen has been changed from intravenous to subcutaneous immunoglobulin (IVIG to SCIG). METHODS: In a prospective open label study, patients were changed from monthly IVIG to weekly SCIG. The primary endpoint was the variation of isokinetic muscle strength (cIKS). Secondary endpoints were variation of Medical Research Council (MRC) score, grip strength (GS), 9-hole-peg test (9-HPT), 40-meter-walk test (40-MWT)...
September 7, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28880219/influence-of-skeletal-muscle-carnosine-content-on-fatigue-during-repeated-resistance-exercise-in-recreationally-active-women
#17
Alyssa N Varanoske, Jay R Hoffman, David D Church, Ran Wang, Kayla M Baker, Sarah J Dodd, Nicholas A Coker, Leonardo P Oliveira, Virgil L Dawson, David H Fukuda, Jeffrey R Stout
Carnosine is a naturally occurring intramuscular dipeptide that is thought to attenuate fatigue during high-intensity exercise. Carnosine content is influenced by various factors, including gender and diet. Despite research reporting that carnosine content is lower in women compared to men and lower in vegetarians compared to omnivores, no investigations have examined carnosine content in women based on dietary protein intake and its effect on muscle fatigue. Twenty recreationally active women were assigned to either a high (HI; n = 5), moderate (MOD; n = 10), or low (LO; n = 5) group based upon intramuscular carnosine content of the vastus lateralis...
September 7, 2017: Nutrients
https://www.readbyqxmd.com/read/28878461/comparison-of-physical-activities-of-female-football-players-in-junior-high-school-and-high-school
#18
Yuri Inoue, Yoshitaka Otani, Seiichi Takemasa
[Purpose] This study aimed to compare physical activities between junior high school and high school female football players in order to explain the factors that predispose to a higher incidence of sports injuries in high school female football players. [Subjects and Methods] Twenty-nine female football players participated. Finger floor distance, the center of pressure during single limb stance with eyes open and closed, the 40-m linear sprint time, hip abduction and extension muscle strength and isokinetic knee flexion and extension peak torque were measured...
August 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28859014/comparisons-in-the-recovery-response-from-resistance-exercise-between-young-and-middle-aged-men
#19
Joseph A Gordon, Jay R Hoffman, Eliott Arroyo, Alyssa N Varanoske, Nicholas A Coker, Yftach Gepner, Adam J Wells, Jeffrey R Stout, David H Fukuda
The purpose of this study was to compare the effects of a bout of high-volume isokinetic resistance exercise (HVP) on lower-body strength and markers of inflammation and muscle damage during recovery between young and middle-aged men. Nineteen recreationally-trained men were classified as either a young adult (YA: 21.8 ± 2.0 y; 90.7 ± 11.6 kg) or middle-aged adult (MA: 47.0 ± 4.4 y; 96.0 ± 21.5 kg) group. The HVP consisted of 8 sets of 10 repetitions, with one minute of rest between each set, performed on an isokinetic dynamometer at 60°·sec...
August 29, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28857748/effects-of-fatigue-and-recovery-on-electromechanical-delay-during-isokinetic-muscle-actions
#20
Cory M Smith, Terry J Housh, Ethan C Hill, Joshua L Keller, Glen O Johnson, Richard J Schmidt
Examine muscle-specific differences and the effects of fatigue and recovery on electromechanical delay (EMD) during maximal isokinetic muscle actions. Approach: Thirteen men performed maximal isokinetic knee extension muscle actions at 60ºs-1, pretest, posttest, and after 5-min of recovery from 25 maximal isokinetic knee extensions. The onsets of the electromyographic, mechanomyographic, and force signals were used to identify EMD measures from the vastus lateralis (VL), vastus medialis (VM), and rectus femoris (RF)...
August 31, 2017: Physiological Measurement
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