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https://www.readbyqxmd.com/read/28741183/reproduction-ageing-and-longevity-in-two-species-of-laboratory-rodents-with-different-life-histories
#1
Eugene Novikov, I Zadubrovskaya, P Zadubrovskiy, T Titova
Social subterranean rodents of the Bathyergidae family are known to have extended longevity and some signs of negligible senescence, although the manifestation of these traits depends on the reproductive status of individuals. Such enormous life history peculiarities are usually explained by the specificity of a subterranean way of life. If so, all subterranean rodents, regardless of their taxonomic position, are expected to have higher maximum lifespans and shorter senescence periods than the related above-ground species...
July 24, 2017: Biogerontology
https://www.readbyqxmd.com/read/28737609/the-effects-of-supplementary-low-load-blood-flow-restriction-training-on-morphological-and-performance-based-adaptations-in-team-sport-athletes
#2
Brendan R Scott, Jeremiah J Peiffer, Paul S R Goods
Scott, BR, Peiffer, JJ, and Goods, PSR. The effects of supplementary low-load blood flow restriction training on morphological and performance-based adaptations in team sport athletes. J Strength Cond Res 31(8): 2147-2154, 2017-Low-load resistance training with blood flow restriction (BFR) may be a method to enhance muscular development even in trained athletes. This study aimed to assess whether supplemental low-load BFR training can improve muscle size, strength, and physical performance characteristics in team sport athletes...
August 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28735850/enhanced-energetic-state-and-protection-from-oxidative-stress-in-human-myoblasts-overexpressing-bmi1
#3
Silvia Dibenedetto, Maria Niklison-Chirou, Claudia P Cabrera, Matthew Ellis, Lesley G Robson, Paul Knopp, Francesco Saverio Tedesco, Martina Ragazzi, Valentina Di Foggia, Michael R Barnes, Aleksandar Radunovic, Silvia Marino
The Polycomb group gene BMI1 is essential for efficient muscle regeneration in a mouse model of Duchenne muscular dystrophy, and its enhanced expression in adult skeletal muscle satellite cells ameliorates the muscle strength in this model. Here, we show that the impact of mild BMI1 overexpression observed in mouse models is translatable to human cells. In human myoblasts, BMI1 overexpression increases mitochondrial activity, leading to an enhanced energetic state with increased ATP production and concomitant protection against DNA damage both in vitro and upon xenografting in a severe dystrophic mouse model...
July 17, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28733716/osteosarcopenia-where-bone-muscle-and-fat-collide
#4
REVIEW
H P Hirschfeld, R Kinsella, G Duque
As the world's population ages, the prevalence of chronic diseases increases. Sarcopenia and osteoporosis are two conditions that are associated with aging, with similar risk factors that include genetics, endocrine function, and mechanical factors. Additionally, bone and muscle closely interact with each other not only anatomically, but also chemically and metabolically. Fat infiltration, a phenomenon observed in age-related bone and muscle loss, is highly prevalent and more severe in sarcopenic and osteoporotic subjects...
July 22, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28730888/preoperative-exercise-training-prevents-functional-decline-after-lung-resection-surgery-a-randomized-single-blind-controlled-trial
#5
Raquel Sebio García, Maria Isabel Yáñez-Brage, Esther Giménez Moolhuyzen, Marta Salorio Riobo, Ana Lista Paz, Jose María Borro Mate
OBJECTIVES: To investigate the effects of a preoperative pulmonary rehabilitation programme in patients with lung cancer undergoing video-assisted thoracic surgery. DESIGN: Randomized, single-blind controlled trial. SETTING: Teaching hospital. SUBJECTS: Patients with suspected or confirmed lung cancer undergoing video-assisted thoracic surgery. INTERVENTION: Participants were randomized to either a prehabilitation group or a control group...
August 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28726035/evaluation-of-physical-activity-in-sarcopenic-conditions-of-kidney-transplantation-recipients
#6
Masaaki Yanishi, Hiroyasu Tsukaguchi, Yutaka Kimura, Yuya Koito, Kenji Yoshida, Maiko Seo, Eri Jino, Motohiko Sugi, Hidefumi Kinoshita, Tadashi Matsuda
INTRODUCTION: Sarcopenia is an involuntary decline in skeletal muscle mass, strength, and function that normally proceed with aging but may develop faster under some chronic disease conditions. In this study, we compared the physical activity between sarcopenia and non-sarcopenia subgroups in kidney transplant recipients. METHODS: Fifty-eight recipients (42 males and 16 females) were enrolled in this study. Mean age of the recipients was 46.6 ± 12.7 years. Mean duration of dialysis was 2...
July 19, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28725437/towards-evidence-based-strength-training-a-comparison-of-muscle-forces-during-deadlifts-goodmornings-and-split-squats
#7
Florian Schellenberg, William R Taylor, Silvio Lorenzetti
BACKGROUND: To ensure an efficient and targeted adaptation with low injury risk during strength exercises, knowledge of the participant specific internal loading conditions is essential. The goal of this study was to calculate the lower limb muscles forces during the strength exercises deadlifts, goodmornings and splits squats by means of musculoskeletal simulation. METHODS: 11 participants were assessed performing 10 different variations of split squats by varying the step length as well as the maximal frontal tibia angle, and 13 participants were measured performing deadlift and goodmorning exercises...
2017: BMC Sports Science, Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28723759/determining-the-relationship-of-kinesiophobia-with-respiratory-functions-and-functional-capacity-in-ankylosing-spondylitis
#8
Göktuğ Er, Ender AngIn
Ankylosing spondylitis (AS) is a common inflammatory rheumatic disease that affects the axial skeleton, causes inflammatory lower back pain, and structural and functional disorders, which affect quality of life negatively.The purpose of this study is to investigate the effects of kinesiophobia in AS on pulmonary function tests (PFTs) and functional performance.Thirty-one individuals with AS (n = 19 male, n = 12 female) who were suitable on the basis of the Modified New York (MNY) criteria were included in the study...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28714764/abdominal-hollowing-reduces-lateral-trunk-displacement-during-single-leg-squats-in-healthy-females-but-does-not-affect-peak-hip-abduction-angle-or-knee-abductio-angle-moment
#9
Lukas D Linde, Jessica Archibald, Eve C Lampert, John Z Srbely
CONTEXT: Females suffer 4-6 times more non-contact anterior cruciate ligament (ACL) injuries than males due to neuromuscular control deficits of the hip musculature leading to increases in hip adduction angle, knee abduction angle, and knee abduction moment during dynamic tasks such as single-leg squats. Lateral trunk displacement has been further related to ACL injury risk in females, leading to the incorporation of core strength/stability exercises in ACL preventative training programs...
July 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28707283/multimodal-physical-activity-increases-brain-derived-neurotrophic-factor-levels-and-improves-cognition-in-institutionalized-older-women
#10
Kelem Vedovelli, Bruno Lima Giacobbo, Márcio Silveira Corrêa, Andréa Wieck, Irani Iracema de Lima Argimon, Elke Bromberg
Physical activity has been proposed as a promising intervention to improve cognition and decrease the risk of dementia in older adults. Brain-derived neurotrophic factor (BDNF) appears to mediate, at least partially, these effects of exercise. However, intervention studies of the effects of multimodal exercises on cognition and BDNF levels are scarce and composed by small samples. Thus, the generalization of the conclusions of these studies depends on the reproducibility of the results. In order to contribute to the knowledge on the field, the present study evaluated the effects of a physical activity intervention composed by muscle strengthening and aerobic conditioning on BDNF levels and cognition in older women...
July 13, 2017: GeroScience
https://www.readbyqxmd.com/read/28704630/relationship-between-bmi-and-fatigability-is-task-dependent
#11
Ranjana K Mehta, Lora Anne Cavuoto
OBJECTIVE: The objective of the current study was to determine the effect of body mass index (BMI) on fatigability of three different muscle groups at four different work intensities. METHODS: Forty-nine normal-weight, 50 overweight, and 43 obese adults (32.1 ± 9.2 years; 50% males) performed fatiguing handgrip, shoulder flexion, and trunk extension exertions at 20%, 40%, 60%, and 80% of the associated maximum voluntary contractions. RESULTS: Obese adults demonstrated 22% to 30% shorter endurance times than normal-weight adults, but this was only observed at lower intensities and with larger and more postural muscles of the shoulder and low back...
August 2017: Human Factors
https://www.readbyqxmd.com/read/28704612/blood-flow-in-humans-following-low-load-exercise-with-and-without-blood-flow-restriction
#12
J Grant Mouser, Gilberto C Laurentino, Scott J Dankel, Samuel L Buckner, Matthew B Jessee, Brittany R Counts, Kevin T Mattocks, Jeremy P Loenneke
Blood flow restriction (BFR) in combination with exercise has been used to increase muscle size and strength using relatively low loads (20%-30% 1RM). In research, the range of applied pressures based on a percentage of arterial occlusion pressure (AOP), is wide. PURPOSE: To measure the blood flow response before, following each set of exercise, and post exercise to low-load elbow flexion combined with no restriction (NOBFR), 40% of AOP (40BFR), and 80% of AOP (80BFR). METHODS: 152 participants volunteered; 140 completed the protocol (women=75, men=65)...
July 13, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28702807/effect-of-rest-pause-vs-traditional-bench-press-training-on-muscle-strength-electromyography-and-lifting-volume-in-randomized-trial-protocols
#13
J Adam Korak, Max R Paquette, Justin Brooks, Dana K Fuller, John M Coons
PURPOSE: Rest-pause (4-s unloaded rest between repetitions) training effects on one repetition maximum (1 RM), lifting volume, and neural activation via electromyography (EMG) are currently vague in the literature and can benefit strength and conditioning professionals for resistance training programme design. Therefore, this study compared 1 RM, neural activation via (EMG), and volume differences between rest-pause vs. traditional resistance training. METHODS: Trained males (N = 20) were randomly assigned to either a rest-pause or a traditional training group...
July 12, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28702449/six-week-physical-rehabilitation-protocol-for-anterior-shoulder-dislocation-in-athletes
#14
Ahmed Gaballah, Mohamed Zeyada, Adham Elgeidi, Eadric Bressel
Anterior shoulder dislocations are common in young athletes. The mechanism for the first or primary shoulder dislocation may involve a collision or a fall typically with the arm in an abducted and externally rotated position. The aim of this study was to design a physical rehabilitation program using the elastic band and resistive exercise to improve joint strength and range of motion in individuals diagnosed with a first-time shoulder dislocation. Twelve physically active males with a first-time acute shoulder dislocation were asked to volunteer...
June 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28700510/changes-in-the-muscle-activity-of-gymnasts-during-a-handstand-on-various-apparatus
#15
Andrzej Kochanowicz, Bartłomiej Niespodziński, Michel Marina, Jan Mieszkowski, Kazimierz Kochanowicz, Mariusz Zasada
Gymnasts perform handstands on various apparatus, both in stable and unstable conditions. Such performances require specific muscle activation, which should differ depending on the condition and expertise of the gymnast. Therefore, the aim of the study was to evaluate 1) the difference in electromyography (EMG) between handstands performed on three apparatus (floor, rings and parallel bars); and 2) the difference between young and well-trained adult gymnasts. Ten adult (25 ± 3.94 years) and 15 young (13.9 ± 0...
July 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28685473/quantitative-biology-of-exercise-induced-signal-transduction-pathways
#16
Timon Cheng-Yi Liu, Gang Liu, Shao-Juan Hu, Ling Zhu, Xiang-Bo Yang, Quan-Guang Zhang
Exercise is essential in regulating energy metabolism. Exercise activates cellular, molecular, and biochemical pathways with regulatory roles in training response adaptation. Among them, endurance/strength training of an individual has been shown to activate its respective signal transduction pathways in skeletal muscle. This was further studied from the viewpoint of quantitative difference (QD). For the mean values, [Formula: see text], of two sets of data, their QD is defined as [Formula: see text] ([Formula: see text])...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28683706/sarcopenia-what-should-a-pharmacist-know
#17
Alfonso J Cruz-Jentoft
Sarcopenia (or muscle insufficiency) is a geriatric syndrome characterized by a progressive and generalized loss of skeletal muscle mass and function which has adverse consequences, particularly physical disability, falls and death. It can develop slowly, as a chronic condition that emerges over many years, or acutely, generally due to immobilization associated with an acute disease. The physiopathology of sarcopenia is complex, and affects both the muscle and its neurological and hormonal regulation...
July 1, 2017: Farmacia Hospitalaria
https://www.readbyqxmd.com/read/28674489/multi-finger-interaction-and-synergies-in-finger-flexion-and-extension-force-production
#18
Jaebum Park, Dayuan Xu
The aim of this study was to discover finger interaction indices during single-finger ramp tasks and multi-finger coordination during a steady state force production in two directions, flexion, and extension. Furthermore, the indices of anticipatory adjustment of elemental variables (i.e., finger forces) prior to a quick pulse force production were quantified. It is currently unknown whether the organization and anticipatory modulation of stability properties are affected by force directions and strengths of in multi-finger actions...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28671957/clinimetric-properties-of-lower-limb-neurological-impairment-tests-for-children-and-young-people-with-a-neurological-condition-a-systematic-review
#19
Ramona Clark, Melissa Locke, Bridget Hill, Cherie Wells, Andrea Bialocerkowski
BACKGROUND: Clinicians and researchers require sound neurological tests to measure changes in neurological impairments necessary for clinical decision-making. Little evidence-based guidance exists for selecting and interpreting an appropriate, paediatric-specific lower limb neurological test aimed at the impairment level. OBJECTIVE: To determine the clinimetric evidence underpinning neurological impairment tests currently used in paediatric rehabilitation to evaluate muscle strength, tactile sensitivity, and deep tendon reflexes of the lower limb in children and young people with a neurological condition...
2017: PloS One
https://www.readbyqxmd.com/read/28669464/frailty-and-sarcopenia-newly-emerging-and-high-impact-complications-of-diabetes
#20
REVIEW
Alan J Sinclair, Ahmed H Abdelhafiz, Leocadio Rodríguez-Mañas
Diabetes increases the risk of physical dysfunction and disability. Diabetes-related complications and coexisting morbidities partially explain the deterioration in physical function. The decline in muscle mass, strength and function associated with diabetes leads to sarcopenia, frailty and eventually disability. Frailty acts as a mediator in the pathogenesis of disability in older people with diabetes and its measurement in routine daily practice is recommended. Frailty is a dynamic process which progresses from a robust condition to a pre-frail stage then frailty and eventually disability...
May 12, 2017: Journal of Diabetes and its Complications
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