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Muscle strength

Qingde Wang, Kezheng Mao, Chunli Wang, Wei Mei
Background Prior studies have mainly assessed transoral odontoidectomy for basilar invagination with irreducible atlantoaxial dislocation. However, studies evaluating transoral release and posterior reduction with occipitocervical fixation in this setting are scarce. Methods From 2008 to 2013, 11 patients (6 men and 5 women; 23-67 years of age) with basilar invagination and irreducible atlantoaxial dislocation underwent surgery. They presented signs and symptoms of myelopathy or significant spinal cord injury, and were treated by transoral soft tissue release without odontoidectomy, under skull traction with heavy weight and by posterior reduction with occipitocervical plate fixation...
October 24, 2016: Journal of Neurological Surgery. Part A, Central European Neurosurgery
Jacob J Morse, Gramos Pallaska, Patrick R Pierce, Travis M Fields, Sujay S Galen, Moh H Malek
Morse, JJ, Pallaska, G, Pierce, PR, Fields, TM, Galen, SS, and Malek, MH. Acute low-dose caffeine supplementation increases electromyographic fatigue threshold in healthy men. J Strength Cond Res 30(11): 3236-3241, 2016-The purpose of this study is to determine whether consumption of a single low-dose caffeine drink will delay the onset of the electromyographic fatigue threshold (EMGFT) in the superficial quadriceps femoris muscles. We hypothesize that the EMGFT values for the caffeine condition will be significantly higher than the EMGFT values for the placebo condition...
November 2016: Journal of Strength and Conditioning Research
Achilleas Boutsiadis, Laurent Baverel, Hubert Lenoir, Philippe Delsol, Johannes Barth
Chronic acromioclavicular (AC) instability is a rare posttraumatic shoulder condition that can lead to undesirable symptoms like persistent pain, muscle fatigue, loss of strength, or even scapular dyskinesis. It is well known that in these cases the superior functional results depend on the restoration of the anatomy and stability of the AC joint in both vertical and horizontal planes. Considering the ligaments degeneration and atrophy in chronic AC joint dislocations, we present an arthroscopic-assisted reconstruction of both the coracoclavicular and AC ligaments using autograft augmentation...
October 21, 2016: Techniques in Hand & Upper Extremity Surgery
Florian Husmann, Martin Gube, Sabine Felser, Matthias Weippert, Anett Mau-Moeller, Sven Bruhn, Martin Behrens
PURPOSE: Despite growing interest in task-dependent alterations of central and peripheral fatigue following endurance exercise, little is known about the impact of rowing on quadriceps muscle fatigue. This study aimed to investigate central and peripheral mechanisms of fatigue following a 2000-m rowing time-trial. METHODS: Eight competitive rowers (4 males, 4 females, 20 ± 4 years) performed a 2000-m time-trial on an indoor rower and a control condition (sitting)...
October 21, 2016: Medicine and Science in Sports and Exercise
Prachaya Srivanitchapoom, Ejaz A Shamim, Pierre Diomi, Takaaki Hattori, Sanjay Pandey, Sherry Vorbach, Jung E Park, Tianxia Wu, Sungyoung Auh, Mark Hallett
STUDY DESIGN: Exploratory case-control study. INTRODUCTION: Writer's cramp (WC) is a type of focal hand dystonia. The central nervous system plays a role in its pathophysiology, but abnormalities in the affected musculoskeletal components may also be relevant. PURPOSE OF THE STUDY: We compared the active range of motion (ROM) in patients with WC and healthy volunteers (HVs) and correlated the findings with disease duration and severity. METHODS: Affected limb joints were measured with goniometers...
February 18, 2016: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
Mahmoud Zaqout, Nathalie Michels, Wolfgang Ahrens, Claudia Börnhorst, Dénes Molnár, Luis A Moreno, Gabriele Eiben, Alfonso Siani, Stalo Papoutsou, Toomas Veidebaum, Stefaan De Henauw
PURPOSE: Exposure to breastfeeding improves the survival, health, and development of children; therefore, breast milk is recommended as the exclusive nutrient source for feeding term infants during the first 6 months. This cross-sectional study aimed to determine the possible association between exposure to exclusive breastfeeding and physical fitness performance in children and, if so, whether this association is influenced by the breastfeeding duration. METHODS: A total of 2853 (52...
October 22, 2016: European Journal of Nutrition
Sandra Bouma, Mark Peterson, Erin Gatza, Sung Won Choi
Survivorship after pediatric HCT has increased over the past decade. Focus on long-term care and well-being remains critical due to risk of poor dietary habits and exaggerated sedentary behavior, which can lead to muscle weakness, increased risk for obesity, and cardiometabolic disorders. Nutrition and physical activity are key factors in survivorship; however, data are limited. Comprehensive nutritional assessments, including nutrition-focused physical examination, grip strength, and food/activity surveys, were completed in 36 pediatric HCT survivors (aged 2-25 years)...
October 21, 2016: Pediatric Transplantation
Jaehoon Choi, Sang Woo Park, Junhyung Kim, Jeongseob Park, Jun Sik Kim
INTRODUCTION: The purpose of this study was to compare the strength of the relationships between predictors and late-onset enophthalmos in medial and inferior orbital wall fractures and to determine the most significant predictive factor of enophthalmos in medial or inferior orbital wall fracture. METHODS: Sixty-three adult patients with unilateral medial or inferior orbital wall fracture who had been left untreated for more than two months were enrolled in this study...
September 7, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
Tessa Strain, Claire Fitzsimons, Paul Kelly, Nanette Mutrie
BACKGROUND: In 2011, the UK physical activity guidelines were updated to include recommendations for muscle strengthening and balance & coordination (at least two sessions of relevant activities per week). However, monitoring and policy efforts remain focussed on aerobic activity. This study aimed to assess differences by gender and age in the a) prevalence of muscle strengthening and balance & co-ordination guidelines, and b) participation in guideline-specific activities. METHODS: The sample for the muscle strengthening analyses was 10,488 adult (16-64 years) and 3857 older adult (≥65 years) 2012-2014 Scottish Health Survey respondents...
October 21, 2016: BMC Public Health
Marcin Kozakiewicz, Leszek Olbrzymek, Ludomir Stefanczyk, Marek Olszycki, Piotr Komorowski, Bogdan Walkowiak, Bartłomiej Konieczny, Michał Krasowski, Jerzy Sokołowski
OBJECTIVE: This study aimed to present a new possibility to create radio-opaque implant material for craniomaxillofacial reconstruction. MATERIALS AND METHODS: The test disks made of the own compound of polyethylenes with addiction of 2, 4, and 6 % of weight TiO2 was investigated for cytotoxicity [each group 15 disks respectively]. Next, computed tomography of the disks was performed in environment of muscle and fat. Hardness, tensile modulus and strength, and compressive modulus and strength were tested too...
October 20, 2016: Clinical Oral Investigations
S T Oestergaard, T Stojkovic, J R Dahlqvist, C Bouchet-Seraphin, J Nectoux, F Leturcq, M Cossée, G Solé, C Thomsen, T O Krag, J Vissing
OBJECTIVE: In this study, muscle involvement assessed by MRI and levels of GMPPB and glycosylation of α-dystroglycan expression in muscle were examined in patients with limb-girdle muscular dystrophy (LGMD) type 2T. METHODS: Six new patients with genetically verified mutations in GMPPB were studied. T1-weighted magnetic resonance images were obtained in 4 participants. Muscle strength and potential involvement of extramuscular organs were examined. Glycosylation of α-dystroglycan in muscle was studied, and GMPPB and α-dystroglycan expression was analyzed by Western blotting...
December 2016: Neurology. Genetics
Ingrid Eitzen, Hege Grindem, Agnethe Nilstad, Håvard Moksnes, May Arna Risberg
BACKGROUND: Reduced quadriceps strength influences knee function and increases the risk of knee osteoarthritis. Thus, it is of significant clinical relevance to precisely quantify strength deficits in patients with knee injuries. PURPOSE: To evaluate isokinetic concentric quadriceps muscle strength torque values, assessed both from peak torque and at specific knee flexion joint angles, in patients with anterior cruciate ligament (ACL) injury, focal cartilage lesions, and degenerative meniscus tears...
October 2016: Orthopaedic Journal of Sports Medicine
Richard M Schumacher, Jana L Arabas, Jerry L Mayhew, William F Brechue
The purpose of this study was to determine the effect of inter-investigator differences in anthropometric assessments on the prediction of one-repetition maximum (1RM) bench press in college football players. Division-II players (n = 34, age = 20.4 ± 1.2 y, 182.3 ± 6.6 cm, 99.1 ± 18.4 kg) were measured for selected anthropometric variables and 1RM bench press at the conclusion of a heavy resistance training program. Triceps, subscapular, and abdominal skinfolds were measured in triplicate by three investigators and used to estimate %fat...
2016: International Journal of Exercise Science
Meta N Eek, Kate Himmelmann
Spasticity and muscle weakness is common in children with cerebral palsy (CP). Spasticity can be treated with botulinum neurotoxin-A (BoNT-A), but this drug has also been reported to induce muscle weakness. Our purpose was to describe the effect on muscle strength in the lower extremities after BoNT-A injections in children with CP. A secondary aim was to relate the effect of BoNT-A to gait pattern and range of motion. Twenty children with spastic CP were included in the study, 8 girls and 12 boys (mean age 7...
2016: Frontiers in Human Neuroscience
Wen-Chyuan Chen, Yi-Ming Chen, Chi-Chang Huang, Yen-Dun Tzeng
Dehydroepiandrosterone (DHEA), the most abundant sex steroid, is primarily secreted by the adrenal gland and a precursor hormone used by athletes for performance enhancement. Whole-body vibration (WBV) is a well-known light-resistance exercise by automatic adaptations to rapid and repeated oscillations from a vibrating platform, which is also a simple and convenient exercise for older adults. However, the potential effects of DHEA supplementation combined with WBV training on to body composition, exercise performance, and hormone regulation are currently unclear...
2016: International Journal of Medical Sciences
Mitsuru Yagi, Hideaki Ohne, Tsunehiko Konomi, Kanehiro Fujiyoshi, Shinjiro Kaneko, Masakazu Takemitsu, Masafumi Machida, Yoshiyuki Yato, Takashi Asazuma
BACKGROUND CONTEXT: Gait patterns and their relationship to demographic and radiographic data in patients with adult spinal deformity (ASD) have not been fully documented. PURPOSE: To assess gait pattern in patients with ASD and the effect of corrective spinal surgery on gait. STUDY DESIGN/SETTING: Prospective case series. PATIENT SAMPLE: The gait patterns of 33 consecutive female with ASD (age 67.1 years; body mass index (BMI) 22...
October 17, 2016: Spine Journal: Official Journal of the North American Spine Society
Elisa A Marques, Pedro Figueiredo, Tamara B Harris, Flávia A Wanderley, Joana Carvalho
This study aimed to compare the magnitude of knee muscle strength and static and dynamic balance change in response to 8 months of progressive RE and AE training in healthy community-dwelling older women. A secondary aim was to assess the relationship between muscle strength and balance changes (up and go test (UGT), one-leg stance test, and center of pressure measures). This study was a secondary analysis of longitudinal data from a randomized controlled trial, a three-arm intervention study in older women (n=71, mean age 69...
October 11, 2016: Archives of Gerontology and Geriatrics
Ikram Bezrati, Raouf Hammami, Mohamed Kacem Ben Fradj, Domenico Martone, Johnny Padulo, Moncef Feki, Anis Chaouachi, Naziha Kaabachi
Vitamin D is thought to regulate skeletal muscle function and boost physical performance. The aim of this study was to assess the relationship between vitamin D and physical performance in physically active children. This cross-sectional study included 125 children who practice football as a leisure activity. Plasma 25-hydroxyvitamin D (25-OHD) was assessed using a chemiluminescence immunoassay method. Vitamin D inadequacy was defined as 25-OHD < 20 ng/mL. Physical performance testing included measurements of muscle strength (maximal isometric contraction), jumping ability (vertical jump, standing broad jump, triple hop test), linear sprint (10 m and 20 m), and agility (9 × 4-m shuttle run)...
July 13, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Robert Walaszek, Stanislaw Sterkowicz, Wieslaw Chwala, Katarzyna Sterkowicz-Przybycien, Katarzyna Walaszek, Marcin Burdacki, Artur Klys
BACKGROUND: Physical activity is beneficial for young children. The aim is to monitor the changes in body posture and balance, as well as in the level of lower limbs mechanical output in six-year-old boys practicing judo (JU) and in a group not practicing that sport (NT). METHODS: In 12 matched pairs of boys (JU+NT) body mass and height were measured and BMI was calculated at three time points (baseline, three months, six months). Body posture was evaluated with the use of Moiré method (TT, DTK, MR, LALBC-F, DALBS)...
October 20, 2016: Journal of Sports Medicine and Physical Fitness
Karen Schipper, Minne Bakker, Tineke Abma
PURPOSE: The aim of this article is to describe how fatigue affects the lives of people with facioscapulohumeral dystrophy (FSHD), how they experience fatigue, and how they deal with it in order to attune rehabilitation care to patients' needs. METHOD: A qualitative study, consisting of 25 semistructured interviews with patients with FSHD and severe fatigue (as measured with the checklist individual strength (CIS) fatigue questionnaire), was conducted to gain insight into the experiences of patients with fatigue...
October 20, 2016: Disability and Rehabilitation
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