keyword
MENU ▼
Read by QxMD icon Read
search

Isometric exercise

keyword
https://www.readbyqxmd.com/read/27921165/left-ventricular-twist-mechanics-during-incremental-cycling-and-knee-extension-exercise-in-healthy-men
#1
Alexander Beaumont, John Hough, Nicholas Sculthorpe, Joanna Richards
PURPOSE: The objective of the present study was to investigate left ventricular (LV) twist mechanics in response to incremental cycling and isometric knee extension exercises. METHODS: Twenty-six healthy male participants (age = 30.42 ± 6.17 years) were used to study peak twist mechanics at rest and during incremental semi-supine cycling at 30 and 60% work rate maximum (W max) and during short duration (15 s contractions) isometric knee extension at 40 and 75% maximum voluntary contraction (MVC), using two-dimensional speckle tracking echocardiography...
December 5, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27913353/embroidered-electromyography-a-systematic-design-guide
#2
Ali Shafti, Roger Ribas Manero, Amanda Borg, Kaspar Althoefer, Matthew Howard
Muscle activity monitoring or Electromyography (EMG) is a useful tool. However, EMG is typically invasive, expensive and difficult to use for untrained users. A possible solution is textile-based surface EMG (sEMG) integrated into clothing as a wearable device. This is, however, challenging due to (i) uncertainties in the electrical properties of conductive threads used for electrodes, (ii) imprecise fabrication technologies (e.g., embroidery, sewing), and (iii) lack of standardization in design variable selection...
December 1, 2016: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/27904794/pain-function-and-strength-outcomes-for-males-and-females-with-patellofemoral-pain-who-participate-in-either-a-hip-core-or-knee-based-rehabilitation-program
#3
Lori A Bolgla, Jennifer Earl-Boehm, Carolyn Emery, Karrie Hamstra-Wright, Reed Ferber
BACKGROUND: Hip exercise has been recommended for females with patellofemoral pain (PFP). It is unknown if males with PFP will benefit from a similar treatment strategy. HYPOTHESES/PURPOSE: The purpose of this study was to compare improvements in pain, function, and strength between males and females with PFP who participated in either a hip/core or knee rehabilitation program. The directional hypothesis was that females would respond more favorably to the hip/core rehabilitation program and males to the knee program...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27899787/mcardle-disease-misdiagnosed-as-meningitis
#4
Renata Siciliani Scalco, Sherryl Chatfield, Muhammad Hyder Junejo, Suzanne Booth, Jatin Pattni, Richard Godfrey, Ros Quinlivan
BACKGROUND McArdle disease is a glycogen storage disorder mainly characterized by exercise intolerance. Prolonged muscle contracture is also a feature of this condition and may lead to rhabdomyolysis (RM), which is a serious event characterized by acute skeletal muscle damage.  CASE REPORT A 44-year-old female patient presented with an acute contracture of the posterior neck muscles, causing severe nuchal rigidity. The contracture was induced during a dental extraction as she held her mouth open for a prolonged period, with her neck in a rigid position...
November 30, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27896952/muscle-strength-in-breast-cancer-patients-receiving-different-treatment-regimes
#5
Oliver Klassen, Martina E Schmidt, Cornelia M Ulrich, Andreas Schneeweiss, Karin Potthoff, Karen Steindorf, Joachim Wiskemann
BACKGROUND: Muscle dysfunction and sarcopenia have been associated with poor performance status, an increased mortality risk, and greater side effects in oncologic patients. However, little is known about how performance is affected by cancer therapy. We investigated muscle strength in breast cancer patients in different adjuvant treatment settings and also compared it with data from healthy individuals. METHODS: Breast cancer patients (N = 255) from two randomized controlled exercise trials, staged 0-III and aged 54...
November 28, 2016: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/27893477/an-evaluation-of-agonist-antagonist-strength-ratios-and-posture-among-powerlifters
#6
Paul T Cutrufello, Stephen J Gadomski, Nicholas A Ratamess
Powerlifters routinely focus on three exercises: bench press, squat, and deadlift. This focus may predispose them to the development of muscle imbalances in either the upper or lower extremity which might also influence posture. Therefore, the purpose of the present study was to examine the agonist:antagonist strength ratios and their relationship to postural measures among powerlifters. An expost facto study design compared fifteen male powerlifters (35.3±13.7 years old) and fifteen age-matched controls (34...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27893476/comparison-of-muscle-involvement-and-posture-between-the-conventional-deadlift-and-a-walk-in-style-deadlift-machine
#7
Benjamin J Snyder, Courtney P Cauthen, Scott R Senger
The deadlift exercise is one of the most effective exercises for developing lower-body strength; however, technique errors can lead to low back injuries. The use of a 'walk-in' deadlift machine removes the weight bar by using a lever system with independent handles on either side of the body. Theoretically, this would allow alignment of the load with the center of gravity, encouraging a more upright torso and decreasing the involvement of the low back extensors. This study compared trunk angle, knee angle and electrical activity of key muscles between the conventional deadlift (CDL) and two foot positions (ball of foot or toe alignment) with pronated grip, (called BallPro and ToePro) of a walk-in deadlift machine among high-skilled and low-skilled lifters...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27889273/is-subscapularis-recruited-in-a-similar-manner-during-shoulder-internal-rotation-exercises-and-belly-press-and-lift-off-tests
#8
Karen A Ginn, Darren Reed, Chelsea Jones, Anthony Downes, Ian Cathers, Mark Halaki
OBJECTIVES: Although the belly press and lift off tests are recommended to assess subscapularis function, shoulder internal rotation (IR) exercises performed in other shoulder positions are more commonly used to restore subscapularis function. It is not known if shoulder IR exercises specifically activate subscapularis to the same degree as the lift off and belly press tests, and thus have the potential to effect subscapularis strength gains. Therefore, the aim was to compare subscapularis activation levels with those of other shoulder internal rotator muscles during the belly press and lift off tests and shoulder IR exercise positions...
November 17, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27881086/lower-extremity-resistance-training-on-unstable-surfaces-improves-proxies-of-muscle-strength-power-and-balance-in-healthy-older-adults-a-randomised-control-trial
#9
Nils Eckardt
BACKGROUND: It is well documented that both balance and resistance training have the potential to mitigate intrinsic fall risk factors in older adults. However, knowledge about the effects of simultaneously executed balance and resistance training (i.e., resistance training conducted on unstable surfaces [URT]) on lower-extremity muscle strength, power and balance in older adults is insufficient. The objective of the present study was to compare the effects of machine-based stable resistance training (M-SRT) and two types of URT, i...
November 24, 2016: BMC Geriatrics
https://www.readbyqxmd.com/read/27875635/muscle-adaptations-following-21-consecutive-days-of-strength-test-familiarization-compared-with-traditional-training
#10
Scott J Dankel, Brittany R Counts, Brian E Barnett, Samuel L Buckner, Takashi Abe, Jeremy P Loenneke
INTRODUCTION: Large increases in 1-repetition maximum (1RM) strength have been demonstrated from repeated testing, but it is unknown whether these increases can be augmented by resistance training. METHODS: Five trained individuals performed a 1RM test and maximal voluntary isometric contraction (MVC) for unilateral elbow flexion exercise on 1 arm (testing arm), while the other arm performed a 1RM test and MVC, in addition to 3 sets of exercise (70% 1RM) (training arm) for 21 straight days...
November 22, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27869410/the-effect-of-strength-training-based-on-process-approach-intervention-on-balance-of-children-with-developmental-coordination-disorder
#11
Hasan Kordi, Mehdi Sohrabi, Alireza Saberi Kakhki, Seyed R Attarzadeh Hossini
INTRODUCTION: Balance is one of the main problems of children with developmental coordination disorder (DCD). According to process-oriented approach, besides strength training, neuromuscular adaptations can improve balance. OBJETIVE: To evaluate the effects of strength training on improving static and dynamic balance in DCD children. METHODS AND POPULATION: Children between 7 to 9 years old in Tehran participated in the study through randomized controlled trial design...
December 1, 2016: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/27865628/the-genesis-and-presentation-of-anxiety-in-disorders-of-autonomic-overexcitation
#12
Andrew P Owens, David A Low, Valeria Iodice, Hugo D Critchley, Christopher J Mathias
INTRODUCTION: We investigated the genesis and presentation of previously-reported anxiety in disorders of autonomic overexcitation in relation to interoception, body vigilance and trauma to test our hypothesis that patients with the postural tachycardia syndrome (PoTS), vasovagal syncope (VVS) and essential hyperhidrosis (EH) represent atypical anxiety phenotypes in whom affective symptoms are more related to apprehension and vigilance of physiological (interoceptive) feedback than neurotic or trauma-related factors...
October 19, 2016: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/27865617/panaxatriol-derived-from-ginseng-augments-resistance-exercised-induced-protein-synthesis-via-mtorc1-signaling-in-rat-skeletal-muscle
#13
Yusuke Takamura, Yuhei Makanae, Satoru Ato, Naomi Yoshii, Kohei Kido, Mitsuru Nomura, Akira Uchiyama, Naruhiro Shiozawa, Satoshi Fujita
Resistance exercise activates muscle protein synthesis via the mammalian target of rapamycin complex 1 (mTORC1) pathway and subsequent muscle hypertrophy. Upstream components of the mTORC1 pathway are widely known to be involved in Akt and extracellular signal-regulated kinase 1/2 (ERK1/2) signaling. Previous studies have shown that ginseng stimulated Akt and ERK1/2 signaling. Therefore, we hypothesized that panaxatriol (PT) derived from ginseng triggers mTORC1 signaling and muscle protein synthesis by activating both the Akt and ERK1/2 signaling pathways, and that PT additively stimulates muscle protein synthesis when combined with resistance exercise...
September 13, 2016: Nutrition Research
https://www.readbyqxmd.com/read/27862023/fatigue-reduction-during-aggregated-and-distributed-sequential-stimulation
#14
Austin J Bergquist, Vishvek Babbar, Saima Ali, Milos R Popovic, Masani Kei
INTRODUCTION: Transcutaneous neuromuscular electrical stimulation (NMES) can generate muscle contractions for rehabilitation and exercise. However, NMES-evoked contractions are limited by fatigue when they are delivered "conventionally" (CONV) using a single active electrode. Researchers developed "sequential" (SEQ) stimulation, involving rotation of pulses between multiple "aggregated" (AGGR-SEQ) or "distributed" (DISTR-SEQ) active electrodes, to reduce fatigue (torque-decline) by reducing motor unit discharge rates...
November 11, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27861249/the-antihypertensive-effects-of-aerobic-versus-isometric-handgrip-resistance-exercise
#15
Garrett I Ash, Beth A Taylor, Paul D Thompson, Hayley V MacDonald, Lauren Lamberti, Ming-Hui Chen, Paulo Farinatti, William J Kraemer, Gregory A Panza, Amanda L Zaleski, Ved Deshpande, Kevin D Ballard, Mohammadtokir Mujtaba, C Michael White, Linda S Pescatello
BACKGROUND: Aerobic exercise reduces blood pressure (BP) on average 5-7 mmHg among those with hypertension; limited evidence suggests similar or even greater BP benefits may result from isometric handgrip (IHG) resistance exercise. METHOD: We conducted a randomized controlled trial investigating the antihypertensive effects of an acute bout of aerobic compared with IHG exercise in the same individuals. Middle-aged adults (n = 27) with prehypertension and obesity randomly completed three experiments: aerobic (60% peak oxygen uptake, 30 min); IHG (30% maximum voluntary contraction, 4 × 2 min bilateral); and nonexercise control...
November 16, 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27859912/sweating-responses-to-isometric-handgrip-exercise-and-forearm-muscle-metaboreflex-in-prepubertal-children-and-elderly
#16
Tatsuro Amano, Seiko Kai, Michi Nakajima, Tomoko Ichinose-Kuwahara, Nicola Gerrett, Narihiko Kondo, Yoshimitsu Inoue
The purpose of the present study is to investigate sweating responses to isometric handgrip (IH) exercise and muscle metaboreflex in prepubertal children and the elderly. In hot condition (ambient temperature, 35°C; relative humidity, 45%), 13 healthy young adults, 10 prepubertal children, and 10 elderly (age: 20.4±1.2, 11.4±0.5, and 63.5±3.1 years, respectively) repeated three handgrip-exercise protocol that consisted of 1 min IH exercise at 15, 30, or 45% of maximum voluntary contractions (MVC) followed by 2 min post-exercise forearm occlusion...
November 11, 2016: Experimental Physiology
https://www.readbyqxmd.com/read/27853886/home-based-isometric-exercise-training-induced-reductions-resting-blood-pressure
#17
Jonathan D Wiles, Natalie Goldring, Damian Coleman
PURPOSE: Isometric exercise training (IET) reduces resting blood pressure (BP). Most previous protocols impose exercise barriers which undermine its effectiveness as a potential physical therapy for altering BP. An inexpensive, home-based programme would promote IET as a valuable tool in the fight against hypertension. The aims of this study were: (a) to investigate whether home-based wall squat training could successfully reduce resting BP and (b) to explore the physiological variables that might mediate a change in resting BP...
November 16, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27853885/an-acute-session-of-roller-massage-prolongs-voluntary-torque-development-and-diminishes-evoked-pain
#18
Mark Tyler Cavanaugh, Alexander Döweling, James Douglas Young, Patrick John Quigley, Daniel David Hodgson, Joseph H D Whitten, Jonathan C Reid, Saied Jalal Aboodarda, David G Behm
INTRODUCTION: Roller massage (RM) has been reported to reduce pain associated with exercise-induced muscle soreness and increase range of motion without force or activation impairments. The objective was to examine RM effects on evoked pain and contractile properties. METHODS: Twelve men received three sets of 30-s RM at a perceived discomfort level of 7/10 on a visual analogue scale on the ipsilateral (IPSI-R) stimulated plantar flexors (PF), contralateral PF (CONTRA-R), Sham (light rolling on stimulated PF), or Control...
November 16, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27852617/sex-differences-in-the-effect-of-fish-oil-supplementation-on-the-adaptive-response-to-resistance-exercise-training-in-older-people-a-randomized-control-trial
#19
Mariasole Da Boit, Rachael Sibson, Selvaraj Sivasubramaniam, Judith R Meakin, Carolyn A Greig, Richard M Aspden, Frank Thies, Stewart Jeromson, D Lee Hamilton, John R Speakman, Catherine Hambly, Arduino A Mangoni, Thomas Preston, Stuart R Gray
BACKGROUND: Resistance exercise increases muscle mass and function in older adults, but responses are attenuated compared with younger people. Data suggest that long-chain n-3 polyunsaturated fatty acids (PUFAs) may enhance adaptations to resistance exercise in older women. To our knowledge, this possibility has not been investigated in men. OBJECTIVE: We sought to determine the effects of long-chain n-3 PUFA supplementation on resistance exercise training-induced increases in muscle mass and function and whether these effects differ between older men and women...
November 16, 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27851668/instability-resistance-training-improves-neuromuscular-outcome-in-parkinson-s-disease
#20
Carla Silva-Batista, Daniel Montie Corcos, Renato Barroso, Fabian J David, Hélcio Kanegusuku, Cláudia Forjaz, Marco Túlio de Mello, Hamilton Roschel, Valmor Tricoli, Carlos Ugrinowitsch
PURPOSE: This study compared the effects of resistance training (RT) and resistance training with instability (RTI) on neuromuscular and total training volume (TTV) outcomes obtained as part of the Instability Resistance Training Trial in Parkinson's disease (IRRT-PD). It also used a linear multiple regression (forward stepwise method) to identify the contribution of neuromuscular outcomes to previously published improvements in the timed-up-and-go-test and the Unified Parkinson's Disease Rating Scale, motor subscale score (UPDRS-III)...
November 16, 2016: Medicine and Science in Sports and Exercise
keyword
keyword
46108
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"