keyword
MENU ▼
Read by QxMD icon Read
search

Isokinetic

keyword
https://www.readbyqxmd.com/read/29791977/no-association-between-rate-of-torque-development-and-onset-of-muscle-activity-with-increased-risk-of-hamstring-injury-in-elite-football
#1
Nicol van Dyk, Roald Bahr, Angus F Burnett, Evert Verhagen, Damien von Tiggelen, Erik Witvrouw
INTRODUCTION: Hamstring injuries remain a significant burden in sports that involve high speed running. In elite male football, hamstring injury has repeatedly been identified as the most common noncontact injury, representing 12% of all injuries. As the incidence remains high, investigations are aimed at better understanding how to improve prevention efforts. Intrinsic risk factors such as strength have been investigated extensively in a cohort of professional football players; however, other intrinsic measures of neuromuscular function have not been studied in this cohort...
May 23, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29786625/differences-in-glenohumeral-joint-rotation-and-peak-power-output-between-super-league-and-championship-rugby-league-players
#2
Matthew R Haines
Haines, MR. Differences in glenohumeral joint rotation and peak power output between Super League and Championship Rugby League players. J Strength Cond Res 32(6): 1685-1691, 2018-Rugby league is a high-intensity sport with large impact forces sustained during play, resulting in high prevalence of shoulder injury. Consequently, shoulder strength and player power are important considerations for injury prevention and performance. Additionally, professional teams regularly compete against semiprofessional teams, where differences in physical conditioning could be marked...
June 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29781992/muscle-imbalances-testing-and-training-functional-eccentric-hamstring-strength-in-athletic-populations
#3
Petr Stastny, Michal Lehnert, James J Tufano
Many hamstring injuries that occur during physical activity occur while the muscles are lengthening, during eccentric hamstring muscle actions. Opposite of these eccentric hamstring actions are concentric quadriceps actions, where the larger and likely stronger quadriceps straighten the knee. Therefore, to stabilize the lower limbs during movement, the hamstrings must eccentrically combat against the strong knee-straightening torque of the quadriceps. As such, eccentric hamstring strength expressed relative to concentric quadricep strength is commonly referred to as the "functional ratio" as most movements in sports require simultaneous concentric knee extension and eccentric knee flexion...
May 1, 2018: Journal of Visualized Experiments: JoVE
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
#4
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/29775985/sensorimotor-exercises-and-enhanced-trunk-function-a-randomized-controlled-trial
#5
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/29775379/decision-to-return-to-sport-participation-after-anterior-cruciate-ligament-reconstruction-part-ii-self-reported-and-functional-performance-outcomes
#6
Jennifer L Werner, Julie P Burland, Carl G Mattacola, Jenny Toonstra, Robert A English, Jennifer S Howard
CONTEXT:   Anterior cruciate ligament (ACL) reconstruction (ACLR) is the most commonly used method for helping athletes regain function and return to preinjury activity levels after ACL injury. Outcomes after ACLR have suggested that athletes return to a level of function that would support a return to sport participation; however, in a recent meta-analysis, pooled return rates were only 55%. It is unclear whether this discrepancy is a result of functional impairments. OBJECTIVE:   To compare patient-reported outcomes (PROs), dynamic balance, dynamic functional performance, strength, and muscular endurance in athletes who have returned to sport (RTS) and athletes who have not returned to sport (NRTS) after ACLR...
May 18, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29769821/validity-and-reliability-of-surface-electromyography-measurements-from-a-wearable-athlete-performance-system
#7
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/29764761/reference-values-for-muscle-strength-a-systematic-review-with-a-descriptive-meta-analysis
#8
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/29761311/comparison-of-fatigue-responses-and-rapid-force-characteristics-between-explosive-and-traditional-resistance-trained-males
#9
Cameron S Mackey, Ryan M Thiele, Eric C Conchola, Jason M DeFreitas
PURPOSE: To compare maximal and rapid force characteristics, as well as fatigability, between traditional (TRT) and explosive (ERT) resistance-trained men. METHODS: Fourteen TRT (mean age = 25 years) and twelve ERT (mean age = 22 years) men performed rapid maximal contractions followed by an isokinetic fatigue protocol consisting of 50 maximal knee extension (KE) and flexions (KF) at a moderate speed (180° s- ¹). Baseline measures included: isokinetic peak torque (PT), isometric rate of torque development (RTD0-50 ), peak acceleration (ACCmax ), and peak velocity (Vmax )...
May 14, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29755583/relationship-between-asymmetry-of-gait-and-muscle-torque-in-patients-after-unilateral-transfemoral-amputation
#10
Alicja Rutkowska-Kucharska, Mateusz Kowal, Sławomir Winiarski
Many studies have shown that unilateral transfemoral amputation involves asymmetric gait. Transfemoral amputation leads to muscle atrophy in a tight stump resulting in asymmetry in muscle torque between the amputated and intact limb. This research is aimed at verifying if a relationship between torque values of hip joint flexors and extensors and gait asymmetry in patients with TFA exists. Fourteen adult subjects with unilateral TFA took part in the experiment. Gait symmetry was evaluated based on the ground reaction force (GRF)...
2018: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29753800/effect-of-sexual-intercourse-on-lower-extremity-muscle-force-in-strength-trained-men
#11
Leah M Valenti, Claudia Suchil, Gabriel Beltran, Roman C Rogers, Emily A Massey, Todd A Astorino
BACKGROUND: Sex has been deemed taboo for athletic performance going back to ancient Rome and Greece, as the act of sex was thought to promote ease and a sense of relaxation. AIM: This study examined the effect of sexual intercourse completed 12 hours before a bout of isokinetic dynamometry on muscle force production in strength-trained men. METHODS: 12 Healthy physically active men (age = 25.6 ± 3.8 years) who were sexually active participated in this study...
May 9, 2018: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/29746385/strength-and-sprint-time-changes-in-response-to-repeated-shuttles-between-the-wickets-during-batting-in-cricket
#12
Candice Jo-Anne Christie, Bronwyn Sheppard, David Goble, Lee Pote, Timothy D Noakes
Christie CJ, Sheppard B, Goble D, Pote L, and Noakes TD. Strength and sprint time changes in response to repeated shuttles between the wickets during batting in cricket. J Strength Cond Res XX(X): 000-000, 2018-No studies have investigated the impact of repeated sprints between the wickets on lower-limb strength and sprint performance. Therefore, the purpose of this study was to assess changes in knee extensor (EXT) and flexor (FLEX) strength after repeated sprints between the wickets and to relate these to changes in sprint times...
May 2, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29746383/angle-specific-isokinetic-metrics-highlight-strength-training-needs-of-elite-youth-soccer-players
#13
Steven J Eustace, Richard M Page, Matt Greig
Eustace, SJ, Page, RM, and Greig, M. angle specific isokinetic metrics highlight strength training needs of elite youth soccer players. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to assess traditional and angle-specific isokinetic strength of eccentric knee flexors (eccKFs) and concentric knee extensors (conKEs) between senior professional and youth soccer players. Thirty-four male soccer players (17 senior and 17 youth) were recruited for bilateral assessments at 180, 270, and 60°·s...
May 2, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29741590/rate-of-muscle-contraction-is-associated-with-cognition-in-women-not-in-men
#14
Qu Tian, Yusuke Osawa, Susan M Resnick, Luigi Ferrucci, Stephanie A Studenski
Background: In older persons, lower hand grip strength is associated with poorer cognition. Little is known about how the rate of muscle contraction relates to cognition and upper extremity motor function, and sex differences are understudied. Methods: Linear regression, adjusting for age, race, education, body mass index, appendicular lean mass, and knee pain assessed sex-specific cross-sectional associations of peak torque, rate of torque development (RTD) and rate of velocity development (RVD) with cognition and upper extremity motor function...
May 8, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29739283/isokinetic-dynamometry-and-gait-analysis-reveal-different-hip-joint-status-in-patients-with-hip-dysplasia
#15
Henrik Sørensen, Dennis B Nielsen, Julie S Jacobsen, Kjeld Søballe, Inger Mechlenburg
BACKGROUND: Objective assessment of hip dysplasia patients' functional hip joint status routinely involves gait analysis or isokinetic dynamometry. However, these methods have shown equivocal results and have not been employed in the same groups of patients and controls. PURPOSE: To assess hip flexor and abductor moments by isokinetic dynamometry in the dysplasia patient and controls, for which we previously reported smaller flexor and slightly larger abductor moments during gait in patients compared to controls...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29738358/the-influence-of-resting-blood-pressure-on-muscle-strength-in-healthy-adults
#16
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
#17
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
#18
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/29723911/specialized-properties-of-the-triceps-surae-muscle-tendon-unit-in-professional-ballet-dancers
#19
M M Moltubakk, M M Magulas, F O Villars, O R Seynnes, J Bojsen-Møller
This study compared professional ballet dancers (n=10) to non-stretching controls (n=10) with the purpose of comparing muscle and tendon morphology, mechanical, neural and functional properties of the triceps surae and their role for ankle joint flexibility. Torque-angle and torque-velocity data were obtained during passive and active conditions by use of isokinetic dynamometry, while tissue morphology and mechanical properties were evaluated by ultrasonography. Dancers displayed longer gastrocnemius medialis fascicles (55 ± 5 vs 47 ± 6 mm) and a longer (207 ± 33 vs 167 ± 10 mm) and more compliant (230 ± 87 vs 364 ± 106 N·mm-1 ) Achilles tendon compared to controls...
May 3, 2018: Scandinavian Journal of Medicine & Science in Sports
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
#20
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
keyword
keyword
44028
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"