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https://www.readbyqxmd.com/read/29776815/strength-recovery-after-anterior-cruciate-ligament-reconstruction-with-quadriceps-tendon-versus-hamstring-tendon-autografts-in-soccer-players-a-randomized-controlled-trial
#1
Jose Luis Martin-Alguacil, Manuel Arroyo-Morales, Jose Luis Martín-Gomez, Isidro Manuel Monje-Cabrera, Juan F Abellán-Guillén, Francisco Esparza-Ros, Mario Lozano Lozano, Irene Cantarero-Villanueva
BACKGROUND: The comparison between HT and QT grafts in strength recovery and function after an ACLR is scarce in the literature. METHODS: A total of 56 participants were enrolled in this randomized controlled trial and placed into two groups: HT or QT. The hamstring/quadriceps (H/Q) ratio was the primary end-point measured with a Genu-3 dynamometer. Peak torque, functional assessment (Lysholm knee scoring scale and Cincinnati Knee Rating System), and anteroposterior laxity (KT-2000™ arthrometer) were also assessed...
May 15, 2018: Knee
https://www.readbyqxmd.com/read/29775800/insertion-and-presence-of-fine-wire-intramuscular-electrodes-to-the-lumbar-paraspinal-muscles-do-not-affect-muscle-performance-and-activation-during-high-exertion-spinal-extension-activities
#2
Szu-Ping Lee, Jo Armour Smith, Matthew Kimber, Kelsey Houk
BACKGROUND: Low back pain (LBP) is commonly associated with paraspinal muscle dysfunctions. A method to study deep lumbar paraspinal (i.e. multifidus) muscle function and neuromuscular activation pattern is intramuscular electromyography (EMG). Previous studies have shown that the procedure does not significantly impact muscle function during activities involving low-level muscle contractions. However, it is currently unknown how muscular function and activation are affected during high-exertion contractions...
May 15, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29769823/relationship-between-achilles-tendon-stiffness-and-ground-contact-time-during-drop-jumps
#3
Mohamed Abdelsattar, Andreas Konrad, Markus Tilp
The purpose of this study was to investigate the relationship between Achilles tendon stiffness and ground contact time (GCT) during drop jumps. The property of "springiness" and a short GCT during the movement is required in several types of sports. Therefore, a stiff tendon might be advantageous due to the quick force transmission from the muscle to the bone. Hence, a secondary aim was to relate Achilles tendon stiffness with squat jump (SJ) and counter movement jump (CMJ) performance, respectively...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29769821/validity-and-reliability-of-surface-electromyography-measurements-from-a-wearable-athlete-performance-system
#4
Scott K Lynn, Casey M Watkins, Megan A Wong, Katherine Balfany, Daniel F Feeney
The Athos ® wearable system integrates surface electromyography (sEMG ) electrodes into the construction of compression athletic apparel. The Athos system reduces the complexity and increases the portability of collecting EMG data and provides processed data to the end user. The objective of the study was to determine the reliability and validity of Athos as compared with a research grade sEMG system. Twelve healthy subjects performed 7 trials on separate days (1 baseline trial and 6 repeated trials). In each trial subjects wore the wearable sEMG system and had a research grade sEMG system's electrodes placed just distal on the same muscle, as close as possible to the wearable system's electrodes...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29768620/association-between-chronic-diseases-and-handgrip-strength-in-older-adults-residents-of-florian%C3%A3-polis-sc-brazil
#5
Susana Cararo Confortin, Ana Lúcia Danielewicz, Danielle Ledur Antes, Lariane Mortean Ono, Eleonora d'Orsi, Aline Rodrigues Barbosa
This paper aims to verify the association between chronic diseases and handgrip strength (HS) in the older adults of Florianópolis, SC. This is a cross-sectional analysis of a longitudinal population-based study. HS was measured by dynamometer. Independent variables included 10 chronic diseases and falls. Simple and multiple linear regression analyses were performed. In the final model, in women, arthritis/rheumatism/arthrosis (β: -1.27; 95%CI: -2.55; -0.20) was associated with lower HS and bronchitis/ asthma (β: 1...
May 2018: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/29764761/reference-values-for-muscle-strength-a-systematic-review-with-a-descriptive-meta-analysis
#6
REVIEW
Poliana do Amaral Benfica, Larissa Tavares Aguiar, Sherindan Ayessa Ferreira de Brito, Luane Helena Nunes Bernardino, Luci Fuscaldi Teixeira-Salmela, Christina Danielli Coelho de Morais Faria
BACKGROUND: Muscle strength is an important component of health. OBJECTIVE: To describe and evaluate the studies which have established the reference values for muscle strength on healthy individuals and to synthesize these values with a descriptive meta-analysis approach. METHODS: A systematic review was performed in MEDLINE, LILACS, and SciELO databases. Studies that investigated the reference values for muscle strength of two or more appendicular/axial muscle groups of health individuals were included...
May 3, 2018: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/29748788/biological-response-of-an-in-vitro-human-3d-lung-cell-model-exposed-to-brake-wear-debris-varies-based-on-brake-pad-formulation
#7
Hana Barosova, Savvina Chortarea, Pavlina Peikertova, Martin J D Clift, Alke Petri-Fink, Jana Kukutschova, Barbara Rothen-Rutishauser
Wear particles from automotive friction brake pads of various sizes, morphology, and chemical composition are significant contributors towards particulate matter. Knowledge concerning the potential adverse effects following inhalation exposure to brake wear debris is limited. Our aim was, therefore, to generate brake wear particles released from commercial low-metallic and non-asbestos organic automotive brake pads used in mid-size passenger cars by a full-scale brake dynamometer with an environmental chamber simulating urban driving and to deduce their potential hazard in vitro...
May 10, 2018: Archives of Toxicology
https://www.readbyqxmd.com/read/29747080/potential-relationship-between-passive-plantar-flexor-stiffness-and-sprint-performance-in-sprinters
#8
Chieri Takahashi, Tadashi Suga, Hiromasa Ueno, Yuto Miyake, Mitsuo Otsuka, Masafumi Terada, Akinori Nagano, Tadao Isaka
OBJECTIVE: To investigate the relationship between passive planter flexor stiffness and sprint performance in sprinters. DESIGN: Cross-sectional study. PARTICIPANTS: Fifty well-trained male sprinters (age: 20.7 ± 1.9 years, height: 175.6 ± 4.9 cm, weight: 66.7 ± 5.1 kg) were participated in this study. Their best personal times in a 100-m sprint ranged from 10.22 to 11.86 s (mean, 11.12 ± 0.43 s). METHODS: Passive stiffness of the plantar flexors measured using a dynamometer system...
April 23, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29743873/relationship-of-handgrip-strength-and-body-mass-index-with-cognitive-function-in-patients-with-schizophrenia
#9
Shinsuke Hidese, Junko Matsuo, Ikki Ishida, Moeko Hiraishi, Toshiya Teraishi, Miho Ota, Kotaro Hattori, Hiroshi Kunugi
Background: The relationship between muscle strength and cognition in schizophrenia has not been well studied. We investigated the potential relationship of handgrip strength (HGS) score and body mass index (BMI) with cognitive function in patients with schizophrenia. Methods: Participants included 153 patients with schizophrenia (age: 36.9 ± 9.4 years; 82 males) and 328 healthy controls (age: 36.4 ± 10.7 years; 150 males), matched for age, sex, and ethnicity (Japanese). HGS was measured using a digital handgrip dynamometer...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29738358/the-influence-of-resting-blood-pressure-on-muscle-strength-in-healthy-adults
#10
Adam R Blanchard, Beth A Taylor, Paul D Thompson, Lindsey K Lepley, C M White, Lauren M Corso, Amanda L Zaleski, Linda S Pescatello
Adverse alterations in the skeletal muscle response to exercise have been noted among adults with hypertension. The influence of resting blood pressure (BP) on muscle strength is unknown. We hypothesized that adults with high BP would exhibit lower muscular strength than adults with normal BP. An isokinetic dynamometer tested 21 measures of isometric and isokinetic muscle strength. BP was measured by auscultation. Patients were categorized into having normal (<120 and <80 mmHg) or high (≥120 and/or ≥80 mmHg) BP...
May 5, 2018: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/29736380/can-therapeutic-thai-massage-improve-upper-limb-muscle-strength-in-parkinson-s-disease-an-objective-randomized-controlled-trial
#11
Yuka Miyahara, Onanong Jitkritsadakul, Jirada Sringean, Nicharee Aungkab, Surasa Khongprasert, Roongroj Bhidayasiri
Muscle weakness is a frequent complaint amongst Parkinson's disease (PD) patients. However, evidence-based therapeutic options for this symptom are limited. We objectively measure the efficacy of therapeutic Thai massage (TTM) on upper limb muscle strength, using an isokinetic dynamometer. A total of 60 PD patients with muscle weakness that is not related to their 'off' periods or other neurological causes were equally randomized to TTM intervention (n = 30), consisting of six TTM sessions over a 3-week period, or standard medical care (no intervention, n = 30)...
April 2018: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29732595/noninvasive-measurement-of-sciatic-nerve-stiffness-in-patients-with-chronic-low-back-related-leg-pain-using-shear-wave-elastography
#12
Tiago Neto, Sandro R Freitas, Ricardo J Andrade, João R Vaz, Bruno Mendes, Telmo Firmino, Paula M Bruno, Antoine Nordez, Raúl Oliveira
OBJECTIVES: The purpose of this study was to determine whether sciatic nerve stiffness is altered in people with chronic low back-related leg pain by using shear wave elastography. METHODS: In this cross-sectional study, the sciatic nerve shear wave velocity (ie, an index of stiffness) was measured in both legs of 16 participants (8 with unilateral low back-related leg pain and 8 healthy controls). Sciatic stiffness was measured during a passive ankle dorsiflexion motion performed at 2°/s in an isokinetic dynamometer...
May 6, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29728298/kinesio-taping-effects-with-different-directions-and-tensions-on-strength-and-range-of-movement-of-the-knee-a-randomized-controlled-trial
#13
Thiago Vilela Lemos, José Roberto de Souza Júnior, Maikon Gleibyson Rodrigues Dos Santos, Marlon Maia Noronha Rosa, Luiz Guilherme Cardoso da Silva, João Paulo Chieregato Matheus
OBJECTIVE: To evaluate the Kinesio Taping effects with different directions and tensions on the strength of rectus femoris and range of movement of the knee in healthy individuals, but with a muscle imbalance caused by exposure to a continuous vibration. METHODS: This is a randomized controlled trial. The subjects were randomly allocated into two groups: Group application of the Kinesio Taping using origin to insertion and Group application of the Kinesio Taping using insertion to origin...
April 14, 2018: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/29723252/test-retest-reliability-of-knee-extensor-rate-of-velocity-and-power-development-in-older-adults-using-the-isotonic-mode-on-a-biodex-system-3-dynamometer
#14
Stijn Van Driessche, Evelien Van Roie, Benedicte Vanwanseele, Christophe Delecluse
Isotonic testing and measures of rapid power production are emerging as functionally relevant test methods for detection of muscle aging. Our objective was to assess reliability of rapid velocity and power measures in older adults using the isotonic mode of an isokinetic dynamometer. Sixty-three participants (aged 65 to 82 years) underwent a test-retest protocol with one week time interval. Isotonic knee extension tests were performed at four different loads: 0%, 25%, 50% and 75% of maximal isometric strength...
2018: PloS One
https://www.readbyqxmd.com/read/29723223/characterization-of-postural-control-impairment-in-women-with-fibromyalgia
#15
Núria Sempere-Rubio, Juan López-Pascual, Marta Aguilar-Rodríguez, Sara Cortés-Amador, Gemma Espí-López, Israel Villarrasa-Sapiña, Pilar Serra-Añó
The main goal of this cross-sectional study was to detect whether women with fibromyalgia syndrome (FMS) have altered postural control and to study the sensory contribution to postural control. We also explored the possibility that self-induced anxiety and lower limb strength may be related to postural control. For this purpose, 129 women within an age range of 40 to 70 years were enrolled. Eighty of the enrolled women had FMS. Postural control variables, such as Ellipse, Root mean square (RMS) and Sample entropy (SampEn), in both directions (i...
2018: PloS One
https://www.readbyqxmd.com/read/29721226/enamel-evaluation-by-scanning-electron-microscopy-after-debonding-brackets-and-removal-of-adhesive-remnants
#16
Dikson Claudino, Milton-Carlos Kuga, Lauriê Belizário, Jefferson-Ricardo Pereira
Background: The bonding of accessories in the dental crown during the orthodontic treatment creates microporosities, thus promoting micromechanical retention of the adhesive to the enamel structure. After debonding brackets, at the end of the active orthodontic treatment, a certain amount of adhesive remnants must be mechanically removed from the enamel. The objective of this study was to compare, by means of scanning electron microscopy, three different methods to remove the adhesive remnants after orthodontic bracket removal...
March 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29709837/ultrafine-particle-emissions-from-modern-gasoline-and-diesel-vehicles-an-electron-microscopic-perspective
#17
Anthi Liati, Daniel Schreiber, Yadira Arroyo Rojas Dasilva, Panayotis Dimopoulos Eggenschwiler
Ultrafine (<100 nm) particles related to traffic are of high environmental and human health concern, as they are supposed to be more toxic than larger particles. In the present study transmission electron microscopy (TEM) is applied to obtain a concrete picture on the nature, morphology and chemical composition of non-volatile ultrafine particles in the exhaust of state-of-the-art, Euro 6b, Gasoline and Diesel vehicles. The particles were collected directly on TEM grids, at the tailpipe, downstream of the after-treatment system, during the entire duration of typical driving cycles on the chassis dynamometer...
April 27, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29701926/associations-between-lean-mass-muscle-strength-and-power-and-skeletal-size-density-and-strength-in-older-men
#18
Didier Chalhoub, Robert Boudreau, Susan Greenspan, Anne B Newman, Joseph Zmuda, Andrew W Frank-Wilson, Nayana Nagaraj, Andrew R Hoffman, Nancy E Lane, Marcia L Stefanick, Elizabeth Barrett-Connor, Tien Dam, Peggy Cawthon, Eric Orwoll, Jane A Cauley
Studies examining the relationship between muscle parameters and bone strength have not included multiple muscle measurements and/or both central and peripheral skeletal parameters. The purpose of this study was to explore the relationship between lean mass, muscle strength and power, and skeletal size, bone density and bone strength. We studied the association between appendicular lean mass (ALM), grip strength and leg power, and central quantitative computed tomography (QCT) parameters in 2,857 men aged 65 or older; peripheral QCT was available on a subset (N = 786)...
April 27, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29701092/the-functional-and-dynamometer-tested-results-of-transtendinous-flexor-hallucis-longus-transfer-for-neglected-ruptures-of-the-achilles-tendon-at-six-years-follow-up
#19
C J Lever, H A Bosman, A H N Robinson
Aims Flexor hallucis longus (FHL) tendon transfer is a well-recognized technique in the treatment of the neglected tendo Achillis (TA) rupture. Patients and Methods We report a retrospective review of 20/32 patients who had undergone transtendinous FHL transfer between 2003 and 2011 for chronic TA rupture. Their mean age at the time of surgery was 53 years (22 to 83). The mean time from rupture to surgery was seven months (1 to 36). The mean postoperative follow-up was 73 months (29 to 120). Six patients experienced postoperative wound complications...
May 1, 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29698107/power-reserve-following-ramp-incremental-cycling-to-exhaustion-implications-for-muscle-fatigue-and-function
#20
Michael D Hodgson, Daniel A Keir, David B Copithorne, Charles L Rice, John M Kowalchuk
In ramp-incremental cycling exercise, some individuals are capable of producing power output (PO) in excess of that produced at their limit of tolerance (LoT) while others cannot. This study sought to describe the: 1) prevalence of a "power reserve" within a group of young men (n=21; mean {plus minus} SD: age 25{plus minus}4 years; V̇O2max 45{plus minus}8 ml•kg-1 •min-1 ); and 2) muscle fatigue characteristics of those with and without a power reserve. Power reserve was determined as the difference between peak PO achieved during a ramp-incremental test to exhaustion and maximal, single-leg isokinetic dynamometer power...
April 26, 2018: Journal of Applied Physiology
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