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Isometric exercise

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https://www.readbyqxmd.com/read/28096689/influence-of-exercise-on-visceral-pain-an-explorative-study-in-healthy-volunteers
#1
Laura Jgm van Weerdenburg, Christina Brock, Asbjørn Mohr Drewes, Harry van Goor, Marjan de Vries, Oliver Hg Wilder-Smith
BACKGROUND AND OBJECTIVES: Contradictory results have been found about the effect of different exercise modalities on pain. The aim of this study was to investigate the early effects of aerobic and isometric exercise on different types of experimental pain, including visceral pain, compared to an active control condition. METHODS: Fifteen healthy subjects (6 women, mean [standard deviation] age 25 [6.5] years) completed 3 interventions consisting of 20 minutes of aerobic cycling, 12 minutes of isometric knee extension and a deep breathing procedure as active control...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28095747/effects-of-roller-massager-on-muscle-recovery-after-exercise-induced-muscle-damage
#2
Nuno Casanova, Joana F Reis, João R Vaz, Rita Machado, Bruno Mendes, Duane C Button, Pedro Pezarat-Correia, Sandro R Freitas
Two experiments (n = 10) were conducted to determine the effects of roller massager (RM) on ankle plantar flexor muscle recovery after exercise-induced muscle damage (EIMD). Experiment 1 examined both functional [i.e., ankle plantar flexion maximal isometric contraction and submaximal (30%) sustained force; ankle dorsiflexion maximal range of motion and resistance to stretch; and medial gastrocnemius pain pressure threshold] and morphological [cross-sectional area, thickness, fascicle length, and fascicle angle] variables, before and immediately, 1, 24, 48, and 72 h after an EIMD stimulus...
January 18, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28095102/electromyographic-analysis-of-gluteus-maximus-and-hamstring-activity-during-the-supine-resisted-hip-extension-exercise-versus-supine-unilateral-bridge-to-neutral
#3
James W Youdas, James P Hartman, Brooke A Murphy, Ashley M Rundle, Jenna M Ugorowski, John H Hollman
Hip extension strengthening exercises which maximize gluteus maximus contributions and minimize hamstring influences may be beneficial for persons with hip pain. This study's aim was to compare muscle activation of the gluteus maximus and hamstrings from healthy subjects during a supine resisted hip extension exercise versus supine unilateral bridge to neutral. Surface electromyographic (EMG) signals were obtained from the right gluteus maximus and hamstrings in 13 healthy male and 13 healthy female subjects...
January 17, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28092056/a-randomised-placebo-controlled-crossover-study-investigating-the-effects-of-nicotine-gum-on-strength-power-and-anaerobic-performance-in-nicotine-na%C3%A3-ve-active-males
#4
Toby Mündel, Marine Machal, Darryl J Cochrane, Matthew J Barnes
BACKGROUND: Nicotine use amongst athletes is high and increasing, especially team sports, yet the limited previous studies investigating the performance consequences of this behaviour have not examined the effects of the principal active ingredient, nicotine, per se. Therefore, we determined whether nicotine gum affected muscular and anaerobic performance. METHODS: Nine active males (24 ± 3 years) completed three trials in a random order in which 20 min prior to testing they chewed 2 mg (NIC-2), 4 mg (NIC-4) nicotine or flavour-matched placebo (PLA) gum...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28090182/supervised-versus-home-exercise-training-programs-on-functional-balance-in-older-subjects
#5
Enas Fawzy Youssef, Alsayed Abd Elhameed Shanb
BACKGROUND: Aging is associated with a progressive decline in physical capabilities and a disturbance of both postural control and daily living activities. The aim of this study was to evaluate the effects of supervised versus home exercise programs on muscle strength, balance and functional activities in older participants. METHODS: Forty older participants were equally assigned to a supervised exercise program (group-I) or a home exercise program (group-II). Each participant performed the exercise program for 35-45 minutes, two times per week for four months...
November 2016: Malaysian Journal of Medical Sciences: MJMS
https://www.readbyqxmd.com/read/28066619/clinical-management-of-chronic-obstructive-pulmonary-disease-patients-with-muscle-dysfunction
#6
REVIEW
Joaquim Gea, Carme Casadevall, Sergi Pascual, Mauricio Orozco-Levi, Esther Barreiro
Muscle dysfunction is frequently observed in chronic obstructive pulmonary disease (COPD) patients, contributing to their exercise limitation and a worsening prognosis. The main factor leading to limb muscle dysfunction is deconditioning, whereas respiratory muscle dysfunction is mostly the result of pulmonary hyperinflation. However, both limb and respiratory muscles are also influenced by other negative factors, including smoking, systemic inflammation, nutritional abnormalities, exacerbations and some drugs...
November 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28064025/plantar-flexor-muscle-weakness-and-fatigue-in-spastic-cerebral-palsy-patients
#7
Daria Neyroud, Stéphane Armand, Geraldo De Coulon, Sarah R Dias Da Silva, Nicola A Maffiuletti, Bengt Kayser, Nicolas Place
BACKGROUND: Patients with cerebral palsy develop an important muscle weakness which might affect the aetiology and extent of exercise-induced neuromuscular fatigue. AIM: This study evaluated the aetiology and extent of plantar flexor neuromuscular fatigue in patients with cerebral palsy. METHODS: Ten patients with cerebral palsy and 10 age- and sex-matched healthy individuals (∼20 years old, 6 females) performed four 30-s maximal isometric plantar flexions interspaced by a resting period of 2-3s to elicit a resting twitch...
January 5, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28060273/induction-and-assessment-of-exertional-skeletal-muscle-damage-in-humans
#8
Michael R Deyhle, Jacob R Sorensen, Robert D Hyldahl
Contraction-induced muscle damage via voluntary eccentric (lengthening) contractions offers an excellent model for studying muscle adaptation and recovery in humans. Herein we discuss the design of an eccentric exercise protocol to induce damage in the quadriceps muscles, marked by changes in strength, soreness, and plasma creatine kinase levels. This method is simple, ethical, and widely applicable since it is performed in human participants and eliminates the interspecies translation of the results. Subjects perform 300 maximal eccentric contractions of the knee extensor muscles at a speed of 120°/sec on an isokinetic dynamometer...
December 11, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28060035/etiology-and-recovery-of-neuromuscular-fatigue-following-simulated-soccer-match-play
#9
Kevin Thomas, Jack Dent, Glyn Howatson, Stuart Goodall
PURPOSE: We profiled the etiology and recovery of neuromuscular fatigue post-simulated-soccer-match-play. METHODS: Fifteen semi-professional players completed a 90 min simulated soccer match. Pre-, immediately-post and at 24, 48 and 72 h participants completed a battery of neuromuscular, physical and perceptual tests. Perceived fatigue and muscle soreness were assessed via visual analogue scales. Maximum voluntary contraction (MVC) and twitch responses to electrical (femoral nerve) and magnetic (motor cortex) stimulation during isometric knee-extensor contractions and at rest were measured to assess central (voluntary activation, VA) and peripheral (quadriceps potentiated twitch force, Qtw,pot) fatigue, and responses to single and paired-magnetic stimuli were assessed to quantify corticospinal excitability and short-intracortical inhibition (SICI), respectively...
January 3, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28054262/does-photobiomodulation-therapy-is-better-than-cryotherapy-in-muscle-recovery-after-a-high-intensity-exercise-a-randomized-double-blind-placebo-controlled-clinical-trial
#10
Thiago De Marchi, Vinicius Mazzochi Schmitt, Guilherme Pinheiro Machado, Juliane Souza de Sene, Camila Dallavechia de Col, Olga Tairova, Mirian Salvador, Ernesto Cesar Pinto Leal-Junior
This study aimed to determine the effectiveness of photobiomodulation therapy (PBMT) and cryotherapy, in isolated and combined forms, as muscle recovery techniques after muscle fatigue-inducing protocol. Forty volunteers were randomly divided into five groups: a placebo group (PG); a PBMT group (PBMT); a cryotherapy group (CG); a cryotherapy-PBMT group (CPG); and a PBMT-cryotherapy group (PCG). All subjects performed four sessions at 24-h intervals, during which they submitted to isometric assessment (MVC) and blood collection in the pre-exercise period, and 5 and 60 min post-exercise, while the muscle fatigue induction protocol occurred after the pre-exercise collections...
January 5, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28043054/dynamic-plantar-pressure-distribution-strength-capacity-and-postural-control-after-lisfranc-fracture-dislocation
#11
Alexander T Mehlhorn, Markus Walther, Tayfun Yilmaz, Lennart Gunst, Anja Hirschmüller, Norbert P Südkamp, Hagen Schmal
Substantial progress has been made in the operative treatment of Lisfranc fractures, however, the prognosis remains poor. We hypothesized that Lisfranc injuries change the postural control and muscle strength of the lower limb. Both are suggested to correlate with the clinical outcome and quality of life. 17 consecutive patients suffering from a Lisfranc fracture dislocation were registered, underwent open reduction and internal fixation and were followed-up for 50.5±25.7months (Mean±SDM). Biomechanical analysis of muscle strength capacities, postural control and plantar pressure distribution was assessed >6 month postoperatively...
December 19, 2016: Gait & Posture
https://www.readbyqxmd.com/read/28034985/psychosocial-influences-on-exercise-induced-hypoalgesia
#12
Angelique G Brellenthin, Kevin M Crombie, Dane B Cook, Nalini Sehgal, Kelli F Koltyn
OBJECTIVE : The purpose of this study was to examine psychosocial influences on exercise-induced hypoalgesia (EIH). DESIGN : Randomized controlled trial. SETTING : Clinical research unit in a hospital. SUBJECTS : Fifty-eight healthy men and women (mean age = 21 ± 3 years) participated in this study. METHODS : Participants were first asked to complete a series of baseline demographic and psychological questionnaires including the Pain Catastrophizing Scale, the Fear of Pain Questionnaire, and the Family Environment Scale...
December 29, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28033302/the-efficacy-of-isometric-resistance-training-utilizing-handgrip-exercise-for-blood-pressure-management-a-randomized-trial
#13
Debra J Carlson, Jodie Inder, Suresh K A Palanisamy, James R McFarlane, Gudrun Dieberg, Neil A Smart
INTRODUCTION: Hypertension is a major risk factor contributing to cardiovascular disease, which is the number one cause of deaths worldwide. Although antihypertensive medications are effective at controlling blood pressure, current first-line treatment for hypertension is nonpharmacological lifestyle modifications. Recent studies indicate that isometric resistance training (IRT) may also be effective for assisting with blood pressure management. The aim of this study was to determine the efficacy of IRT for blood pressure management and the suitability of a low-intensity working control group...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28025376/local-and-generalized-endogenous-pain-modulation-in-healthy-men-effects-of-exercise-and-exercise-induced-muscle-damage
#14
Christopher D Black, Brandon K Tynes, Alexander R Gonglach, Dwight E Waddell
: Isometric exercise has been shown to activate endogenous pain inhibitory pathways in healthy adults, but not in some clinical pain populations. OBJECTIVE:  Exercise-induced muscle damage (EIMD) and the associated delayed-onset muscle soreness (DOMS) are a model for studying clinical pain; thus, our purpose was to examine the effects of isometric exercise on pressure pain threshold (PPT) in the presence and absence of DOMS. METHODS:  Data were collected on 23 males (22...
December 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28011801/impact-of-haemodynamic-sonr-sensor-on-monitoring-of-left-ventricular-function-in-patients-undergoing-cardiac-resynchronization-therapy
#15
Stefania Sacchi, Paolo Pieragnoli, Giuseppe Ricciardi, Gino Grifoni, Luigi Padeletti
AIMS: The haemodynamic SonR sensor is able to measure myocardial contractility. The isometric effort is useful in quantifying left ventricular (LV) performance. We investigated the amplitude changes in SonR signal over time and during static exercise according to the recovery of the left ventricle. METHODS AND RESULTS: Twenty five patients [18 male, 70 ± 8 years, LV ejection fraction (LVEF) 29 ± 5%, in sinus rhythm] underwent biventricular SonR implantable cardioverter defibrillator implant...
December 23, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28011412/electromyographic-analysis-of-muscle-activation-during-pull-up-variations
#16
James A Dickie, James A Faulkner, Matthew J Barnes, Sally D Lark
This study sought to identify any differences in peak muscle activation (EMGPEAK) or average rectified variable muscle activation (EMGARV) during supinated grip, pronated grip, neutral grip and rope pull-up exercises. Nineteen strength trained males (24.9±5y; 1.78±0.74m; 81.3±11.3kg; 22.7±2.5kgm(-2)) volunteered to participate in the study. Surface electromyography (EMG) was collected from eight shoulder-arm-forearm complex muscles. All muscle activation was expressed as a percentage of maximum voluntary isometric contraction (%MVIC)...
November 28, 2016: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28009532/feed-forward-regulation-of-self-selected-exercise-intensity-in-response-to-different-rates-of-arterial-deoxygenation
#17
Saro D Farra
Arterial desaturation impairs exercise performance in a dose-dependent manner. However, new theories of exercise-induced fatigue suggest that increasing rates of arterial deoxygenation augment the fatigue response during exercise. The purpose of this dissertation is to clarify if self-selected exercise intensity, while exercising at a constant rate of perceived exertion (RPE), is sensitive to alterations in the absolute arterial saturation (SPO2) and/or the rate of change in SPO2. Subjects performed constant RPE exercise for 30 min...
January 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/27993588/effect-of-a-single-administration-of-focused-extracorporeal-shock-wave-in-the-relief-of-delayed-onset-muscle-soreness-results-of-a-partially-blinded-randomized-controlled-trial
#18
Johannes Fleckenstein, Mara Friton, Heiko Himmelreich, Winfried Banzer
OBJECTIVES: To examine the effects of a single administration of focused extracorporeal shockwave therapy (fESWT) on eccentric exercise-induced delayed-onset muscle soreness (DOMS). DOMS is a common symptom in people participating in exercise, sports, or recreational physical activities. DESIGN: Three-arm randomized controlled study conducted in 2009. SETTING: DOMS was induced by eccentric exercise of the non-dominant arm in voluntary participants at the Sports Campus of a German university...
December 16, 2016: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27992070/exercise-for-haemophilia
#19
REVIEW
Karen Strike, Kathy Mulder, Rojer Michael
BACKGROUND: Haemophilia is a bleeding disorder associated with haemorrhaging into joints and muscles. Exercise is often used to aid recovery after bleeds, and to improve joint function in the presence of arthropathy. OBJECTIVES: Our objective was to systematically review the available evidence on the safety and effectiveness of exercise for people with haemophilia. SEARCH METHODS: We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group's Coagulopathies Trials Register and electronic databases PubMed, OVID-Embase, and CINAHL...
19, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27984429/exercise-induced-hypoalgesia-is-not-influenced-by-physical-activity-type-and-amount
#20
Christopher D Black, Jamie K Huber, Laura D Ellingson, Carl J Ade, E Laurette Taylor, Elaine M Griffeth, Natalie R Janzen, Shelbi L Sutterfield
: Physical activity (PA), especially vigorous intensity PA, has been shown to be related to pain sensitivity. The relationship among physical activity levels and physical activity types on endogenous pain inhibition following exercise, termed exercise-induced hypoalgesia (EIH) remains unclear. PURPOSE: This studied examined the EIH response to pressure stimuli among college-aged women of differing activity levels. METHODS: Fifty women were tested...
December 14, 2016: Medicine and Science in Sports and Exercise
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