keyword
MENU ▼
Read by QxMD icon Read
search

Muscular fatigue

keyword
https://www.readbyqxmd.com/read/28532279/the-effect-of-cold-ambient-temperatures-on-climbing-specific-finger-flexor-performance
#1
Kevin Phillips, Byungjoo Noh, Matthew Gage, Tejin Yoon
Different ambient temperatures are known to affect muscular performance based on the type of contraction. The effect of cold (10°C) and thermoneutral (TN) (24°C) ambient temperatures on finger flexor performance was examined in 12 rock climbers. After 30 min of seated rest in the designated temperature condition, participants completed maximal voluntary contractions (MVC) on a climbing-specific finger flexor assessment device equipped with a crimp grip hold. Participants then completed an intermittent fatiguing task until failure...
May 22, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28530475/a-novel-electromyographic-approach-to-estimate-fatigue-threshold-in-maximum-incremental-strength-tests
#2
Jerónimo Aragón-Vela, Yaira Barranco-Ruiz, Cristina Casals, Julio Plaza-Díaz, Rafael A Casuso, Luis Fontana, Jesus R Huertas
Evaluation of muscular fatigue thresholds in athletes performing short-duration and explosive exercises is difficult due to the fact that classic parameters do not suffer large variations. Therefore, the aim of this study was to develop a new method to estimate the fatigue threshold in single muscles. Our approach is based on electromyographic data recorded during a maximun incremental strength test until the one repetition maximum (1RM) is reached. Ten men and ten women performed a half-squat strength test consisting of five incremental intensities of 1RM...
May 22, 2017: Motor Control
https://www.readbyqxmd.com/read/28516474/relationship-between-pain-and-motor-and-non-motor-symptoms-in-parkinson-s-disease
#3
G Defazio, A Antonini, M Tinazzi, A F Gigante, S Pietracupa, R Pellicciari, M Bloise, R Bacchin, A Marcante, G Fabbrini, A Berardelli
BACKGROUND AND PURPOSE: Although female gender, depressive symptoms and medical conditions predisposing to pain are more common in patients with Parkinson's disease (PD) with pain, no study has yet explored the relationship between pain and other non-motor symptoms (NMS). METHODS: A total of 321 consecutive patients with PD [190 men/131 women aged 68.3 (SD 9.2) years] attending four Italian movement disorder clinics were studied. Demographic/clinical data were obtained by a standardized interview and the NMS scale...
May 18, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28507192/performance-fatigability-mechanisms-and-task-specificity
#4
Sandra K Hunter
Performance fatigability is characterized as an acute decline in motor performance caused by an exercise-induced reduction in force or power of the involved muscles. Multiple mechanisms contribute to performance fatigability and originate from neural and muscular processes, with the task demands dictating the mechanisms. This review highlights that (1) inadequate activation of the motoneuron pool can contribute to performance fatigability, and (2) the demands of the task and the physiological characteristics of the population assessed, dictate fatigability and the involved mechanisms...
May 15, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28473671/prevalence-of-menopausal-symptoms-its-effect-to-quality-of-life-among-malaysian-women-and-their-treatment-seeking-behaviour
#5
B Abdullah, B Moize, B A Ismail, M Zamri, N F Mohd Nasir
INTRODUCTION: This study aimed to determine the prevalence of menopausal symptoms, its effect to the quality of life and their treatment seeking behaviour in a multiracial community in Malaysia. METHODS: This is a cross-sectional study involving postmenopausal women in Klang Valley, Malaysia. Data was obtained by face-to-face interview using standardised questionnaires on sociodemographic data, Menopause Rating Scale questionnaire, effect to quality of life and treatment sought...
April 2017: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28473226/kennedy-disease-x-linked-recessive-bulbospinal-neuronopathy-a-comprehensive-review-from-pathophysiology-to-therapy
#6
REVIEW
G Querin, G Sorarù, P-F Pradat
Kennedy's disease, also known as spinal and bulbar muscular atrophy (SBMA), is a rare, adult-onset, X-linked recessive neuromuscular disease caused by expansion of a CAG repeat sequence in exon 1 of the androgen receptor gene (AR) encoding a polyglutamine (polyQ) tract. The polyQ-expanded AR accumulates in nuclei, and initiates degeneration and loss of motor neurons and dorsal root ganglia. While the disease has long been considered a pure lower motor neuron disease, recently, the presence of major hyper-creatine-kinase (CK)-emia and myopathic alterations on muscle biopsy has suggested the presence of a primary myopathy underlying a wide range of clinical manifestations...
May 1, 2017: Revue Neurologique
https://www.readbyqxmd.com/read/28470591/high-intensity-interval-training-in-facioscapulohumeral-muscular-dystrophy-type-1-a-randomized-clinical-trial
#7
Grete Andersen, Karen Heje, Astrid Emile Buch, John Vissing
Increasing evidence suggests that high-intensity training (HIT) is a time-efficient exercise strategy to improve fitness. HIT has never been explored in neuromuscular diseases, likely because it may seem counterintuitive. A single session of high-intensity exercise has been studied without signs of muscle damage in facioscapulohumeral muscular dystrophy type 1 (FSHD1). We aimed to determine whether HIT is safe and effective in FSHD1 in a randomized, controlled parallel study. Untrained adults with genetically verified FSHD1 (n = 13) able to perform cycle-ergometer exercise were randomized to 8 weeks of supervised HIT (n = 6) (3 × 10-min cycle-ergometer-HIT/week) or 8 weeks of usual care (n = 7)...
May 3, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28448086/effects-of-running-wheel-activity-and-dietary-hmb-and-%C3%AE-alanine-co-supplementation-on-muscle-quality-in-aged-male-rats
#8
D W Russ, C Acksel, K W McCorkle, N K Edens, S M Garvey
OBJECTIVE: Loss of skeletal muscle function is linked to increased risk for loss of health and independence in older adults. Dietary interventions that can enhance aging muscle function, alone or in combination with exercise, may offer an effective way to reduce these risks. The goal of this study was to evaluate the muscular effects of beta-hydroxy-beta-methylbutyrate (HMB) and beta-alanine (β-Ala) co-supplementation in aged Sprague-Dawley rats with voluntary access to running wheels (RW)...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28415067/effect-of-whey-protein-in-conjunction-with-a-caloric-restricted-diet-and-resistance-training
#9
Wesley D Dudgeon, Elizabeth P Kelley, Timothy P Scheett
Dudgeon, WD, Kelley, EP, and Scheett, TP. Effect of whey protein in conjunction with a caloric-restricted diet and resistance training. J Strength Cond Res 31(5): 1353-1361, 2017-Caloric-restricted weight loss, especially rapid weight loss, results from a decrease in both lean and fat mass (FM). The goal for many is to lose FM while retaining lean body mass (LBM) and muscular performance thus many turn to supplements. Sixteen resistance-trained men (24 ± 1.6 years of age) completed a 4 d·wk body building style split resistance training program for 8 weeks in conjunction with a pre-exercise, periexercise, and postexercise ingestion of whey protein (WHEY) nutritional supplement or carbohydrate (CON)-based nutritional supplement...
May 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28409508/performance-of-muscle-strength-and-fatigue-tolerance-in-young-trained-women-supplemented-with-caffeine
#10
Carlos A Fett, Natalia Magalhães Aquino, Jairo Schantz, Camila F Brandão, Joás D de Araújo Cavalcanti, Waleria C Rezende Fett
BACKGROUND: Verify the effect of caffeine supplementation on the muscular strength and fatigue tolerance of young trained women. METHODS: Eight women of 25±5 years old, who had undergone a minimum of 12 months of continuous resisted training, body mass index 20-23 kg/m2 were submitted to four tests: one repetition maximum (1- RM, kg) to pull down (PD), hack squat (HS), bench press (BP), and; knee extension exhaustion (drop-set, 100/80/60 kg, repetitions) (DS). They perform the tests in four consecutive blocks one-week apart crossover system: basal without caffeine (B); first caffeine (C1); placebo with starch supplementation (P); second caffeine (C2)...
April 13, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28397002/the-uk-myotonic-dystrophy-patient-registry-facilitating-and-accelerating-clinical-research
#11
Libby Wood, Isabell Cordts, Antonio Atalaia, Chiara Marini-Bettolo, Paul Maddison, Margaret Phillips, Mark Roberts, Mark Rogers, Simon Hammans, Volker Straub, Richard Petty, Richard Orrell, Darren G Monckton, Nikoletta Nikolenko, Aura Cecilia Jimenez-Moreno, Rachel Thompson, David Hilton-Jones, Chris Turner, Hanns Lochmüller
Myotonic dystrophy type 1 (DM1) is the most frequent muscular dystrophy worldwide with complex, multi-systemic, and progressively worsening symptoms. There is currently no treatment for this inherited disorder and research can be challenging due to the rarity and variability of the disease. The UK Myotonic Dystrophy Patient Registry is a patient self-enrolling online database collecting clinical and genetic information. For this cross-sectional "snapshot" analysis, 556 patients with a confirmed diagnosis of DM1 registered between May 2012 and July 2016 were included...
May 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28391188/a-computational-study-of-vocal-fold-dehydration-during-phonation
#12
Liang Wu, Zhaoyan Zhang
While vocal fold dehydration is often considered an important factor contributing to vocal fatigue, it still remains unclear whether vocal fold vibration alone is able to induce severe dehydration that has noticeably effect on phonation and perceived vocal effort. A three-dimensional model was developed to investigate vocal fold systemic dehydration and surface dehydration during phonation. Based on the linear poroelastic theory, the model considered water resupply from blood vessels through the lateral boundary, water movement within the vocal folds, water exchange between the vocal folds and the surface liquid layer through the epithelium, and surface fluid accumulation and discharge to the glottal airway...
April 5, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28376816/a-qualitative-study-of-perceptions-of-meaningful-change-in-spinal-muscular-atrophy
#13
Sarah McGraw, Ying Qian, Jeff Henne, Jill Jarecki, Kenneth Hobby, Wei-Shi Yeh
BACKGROUND: This qualitative study examined how individuals with Spinal Muscular Atrophy (SMA), their caregivers, and clinicians defined meaningful change, primarily in the Type II and non-ambulant type III patient populations, associated with treatment of this condition. In addition, we explored participants' views about two measures of motor function routinely used in clinical trials for these SMA subtypes, namely the expanded version of the Hammersmith Functional Motor Scale (HFMSE) and the Upper Limb Module (ULM)...
April 4, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28364615/strength-and-endurance-training-reduces-the-loss-of-eccentric-hamstring-torque-observed-after-soccer-specific-fatigue
#14
Martyn J Matthews, Kate Heron, Stefanie Todd, Andrew Tomlinson, Paul Jones, Anne Delextrat, Daniel D Cohen
OBJECTIVES: To investigate the effect of two hamstring training protocols on eccentric peak torque before and after soccer specific fatigue. PARTICIPANTS: Twenty-two university male soccer players. DESIGN: Isokinetic strength tests were performed at 60°/s pre and post fatigue, before and after 2 different training interventions. A 45-min soccer specific fatigue modified BEAST protocol (M-BEAST) was used to induce fatigue. Players were randomly assigned to a 4 week hamstrings conditioning intervention with either a maximum strength (STR) or a muscle endurance (END) emphasis...
May 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28357131/aquatic-therapy-for-boys-with-duchenne-muscular-dystrophy-dmd-an-external-pilot-randomised-controlled-trial
#15
Daniel Hind, James Parkin, Victoria Whitworth, Saleema Rex, Tracey Young, Lisa Hampson, Jennie Sheehan, Chin Maguire, Hannah Cantrill, Elaine Scott, Heather Epps, Marion Main, Michelle Geary, Heather McMurchie, Lindsey Pallant, Daniel Woods, Jennifer Freeman, Ellen Lee, Michelle Eagle, Tracey Willis, Francesco Muntoni, Peter Baxter
BACKGROUND: Standard treatment of Duchenne muscular dystrophy (DMD) includes regular physiotherapy. There are no data to show whether adding aquatic therapy (AT) to land-based exercises helps maintain motor function. We assessed the feasibility of recruiting and collecting data from boys with DMD in a parallel-group pilot randomised trial (primary objective), also assessing how intervention and trial procedures work. METHODS: Ambulant boys with DMD aged 7-16 years established on steroids, with North Star Ambulatory Assessment (NSAA) score ≥8, who were able to complete a 10-m walk test without aids or assistance, were randomly allocated (1:1) to 6 months of either optimised land-based exercises 4 to 6 days/week, defined by local community physiotherapists, or the same 4 days/week plus AT 2 days/week...
2017: Pilot and Feasibility Studies
https://www.readbyqxmd.com/read/28349262/%C3%AE-alanine-supplementation-improves-in-vivo-fresh-and-fatigued-skeletal-muscle-relaxation-speed
#16
Rebecca Louise Jones, Cleveland Thomas Barnett, Joel Davidson, Billy Maritza, William D Fraser, Roger Harris, Craig Sale
PURPOSE: In fresh muscle, supplementation with the rate-limiting precursor of carnosine, β-alanine (BA), results in a decline in muscle half-relaxation time (HRT) potentially via alterations to calcium (Ca(2+)) handling. Accumulation of hydrogen cation (H(+)) has been shown to impact Ca(2+) signalling during muscular contraction, carnosine has the potential to serve as a cytoplasmic regulator of Ca(2+) and H(+) coupling, since it binds to both ions. The present study examined the effect of BA supplementation on intrinsic in-vivo isometric knee extensor force production and muscle contractility in both fresh and fatigued human skeletal muscle assessed during voluntary and electrically evoked (nerve and superficial muscle stimulation) contractions...
May 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28338349/clinical-features-of-children-and-adults-with-a-muscular-dystrophy-using-powered-indoor-outdoor-wheelchairs-disease-features-comorbidities-and-complications-of-disability
#17
Andrew Oliver Frank, Lorraine H De Souza
PURPOSE: To describe the clinical features of electric powered indoor/outdoor wheelchair users with a muscular dystrophy, likely to influence optimal prescription; reflecting features of muscular dystrophies, conditions secondary to disability, and comorbidities impacting on equipment provision. METHODS: Cross-sectional retrospective case note review of recipients of electric powered indoor/outdoor wheelchairs provided by a specialist regional wheelchair service...
February 25, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28315916/muscular-damage-in-a-patient-with-hepatitis-b-induced-by-beta-l-2-deoxythymidine-and-detected-by-18-f-fdg-pet-ct
#18
Jinhua Zi, Changyun Xu, Xuemei Zhang
A 58 years old man under 2'-Deoxy-L-thymidine treatment for his hepatitis B was admitted to our hospital complaining for the last 2 months of recurrent upper abdomen discomfort, fatigue and weight loss of 10 kilograms and general muscular soreness, for 2 weeks. He had elevated creatine kinase (CK), myoglobin, CK-MB and other related or common laboratory findings. Fluorine-18- fluorodeoxyglucose positron emission tomography/ computed tomography ((18)F-FDG PET/CT) showed a diffuse, homogenous, moderately elevated glucose uptake in all muscle groups...
January 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28290751/comparison-of-thoracic-and-lumbar-erector-spinae-muscle-activation-before-and-after-a-golf-practice-session
#19
Graeme G Sorbie, Fergal M Grace, Yaodong Gu, Julien S Baker, Ukadike C Ugbolue
Lower back pain is commonly associated with golfers. The study aimed: to determine whether thoracic- and lumbar-erector-spinae muscle display signs of muscular fatigue after completing a golf practice session, and to examine the effect of the completed practice session on club head speed, ball speed and absolute carry distance performance variables. Fourteen right-handed male golfers participated in the laboratory-based-study. Surface electromyography (EMG) data was collected from the lead and trail sides of the thoracic- and lumbar-erector-spinae muscle...
March 14, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/28288611/benefits-of-resistance-exercise-in-lean-women-with-fibromyalgia-involvement-of-igf-1-and-leptin
#20
Jan L Bjersing, Anette Larsson, Annie Palstam, Malin Ernberg, Indre Bileviciute-Ljungar, Monika Löfgren, Björn Gerdle, Eva Kosek, Kaisa Mannerkorpi
BACKGROUND: Chronic pain and fatigue improves by exercise in fibromyalgia (FM) but underlying mechanisms are not known. Obesity is increased among FM patients and associates with higher levels of pain. Symptom improvement after aerobic exercise is affected by body mass index (BMI) in FM. Metabolic factors such as insulin-like growth factor 1 (IGF-1) and leptin may be involved. In this study, the aim was to evaluate the role of metabolic factors in lean, overweight and obese women during resistance exercise, in relation to symptom severity and muscle strength in women with FM...
March 14, 2017: BMC Musculoskeletal Disorders
keyword
keyword
45528
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"