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https://www.readbyqxmd.com/read/28197275/cardiac-resynchronization-therapy-leads-to-improvements-in-handgrip-strength
#1
David R Warriner, Patricia Lawford, Paul J Sheridan
BACKGROUND: A reduction in skeletal muscle performance measured by handgrip strength is common in heart failure. No trial has investigated the role of cardiac resynchronization therapy, which leads to improvements in cardiac performance, on the function of skeletal muscle in patients with heart failure. METHODS: Nineteen patients were recruited, 18 male, age 69 ± 8 years, New York Heart Association class II-IV, QRS duration 173 ± 21 ms and left ventricular ejection fraction 26±8%...
June 2016: Cardiology Research
https://www.readbyqxmd.com/read/28195935/allometric-grip-strength-norms-for-children-of-hawaiian-lineage
#2
Morgan H Kocher, Rebecca K Romine, Christopher D Stickley, Charles F Morgan, Portia B Resnick, Ronald K Hetzler
PURPOSE: To determine allometric exponents for scaling grip strength in children that effectively control for body mass and height and develop normative grip strength data for Hawaiian children. METHODS: 1,437 students (754 boys) from a rural community in Hawaii participated in this 5-year study, resulting in 2,567 data points. Handgrip strength, body mass (BM), stature (Ht) were collected every year. Multiple log-linear regression was used to determine allometric exponents for BM and Ht...
December 13, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28195167/handgrip-strength-cutoff-for-cardiometabolic-risk-index-among-colombian-children-and-adolescents-the-fuprecol-study
#3
Robinson Ramírez-Vélez, Jhonatan Camilo Peña-Ibagon, Javier Martínez-Torres, Alejandra Tordecilla-Sanders, Jorge Enrique Correa-Bautista, Felipe Lobelo, Antonio García-Hermoso
Evidence shows an association between muscular strength (MS) and health among young people, however low muscular strength cut points for the detection of high metabolic risk in Latin-American populations are scarce. The aim of this study was twofold: to explore potential age- and sex-specific thresholds of MS, for optimal cardiometabolic risk categorization among Colombian children and adolescents; and to investigate whether cardiometabolic risk differed by MS group by applying the receiver operating characteristic curve (ROC) cut point...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28188951/the-influence-of-adrenergic-stimulation-on-sex-differences-in-left-ventricular-twist-mechanics
#4
Alexandra M Williams, Rob E Shave, William S Cheyne, Neil D Eves
BACKGROUND: Sex differences in LV mechanics exist at rest and during acute physiological stress. Differences in cardiac autonomic and adrenergic control may contribute to sex differences in LV mechanics and LV hemodynamics. Accordingly, this study aimed to investigate sex differences in LV mechanics with altered adrenergic stimulation achieved through post handgrip exercise ischemia (PEI) and β1 -adrenergic receptor (AR) blockade. METHODS AND RESULTS: 20 males (23 ± 5 yr) and 20 females (22 ± 3 yr) were specifically matched for LV length (males: 8...
February 11, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28188214/transcranial-doppler-determined-change-in-posterior-cerebral-artery-blood-flow-velocity-does-not-reflect-vertebral-artery-blood-flow-during-exercise
#5
Takuro Washio, Hiroyuki Sasaki, Shigehiko Ogoh
We examined whether a change in posterior cerebral artery flow velocity (PCAv) reflected the posterior cerebral blood flow, in healthy subjects, during both static and dynamic exercise. PCAv and vertebral artery (VA) blood flow, as an index of posterior blood flow, were continuously measured during an exercise trial, using transcranial Doppler (TCD) ultrasonography and Doppler ultrasound, respectively. Static handgrip exercise significantly increased both PCAv and VA blood flow. Increasing intensity of dynamic exercise further increased VA blood flow from moderate exercise, while PCAv decreased to almost resting level...
February 10, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28187195/a-multilevel-analysis-of-health-related-physical-fitness-the-portuguese-sibling-study-on-growth-fitness-lifestyle-and-health
#6
Sara Pereira, Peter Todd Katzmarzyk, Thayse Natacha Gomes, Michele Souza, Raquel Nichele Chaves, Fernanda Karina Dos Santos, Daniel Santos, Donald Hedeker, José Maia
This study investigates biological, behavioural and sociodemographic correlates of intra-pair similarities, and estimates sibling resemblance in health-related physical fitness (PF). The sample comprises 1101 biological siblings (525 females) aged 9-20 years. PF components and markers were: morphological [waist circumference (WC) and %body fat (%BF)], muscular [handgrip strength (GS) and standing long jump (SLJ)], motor [50-yard dash (50YD) and shuttle run (SR)], and cardiorespiratory (1-mile run). Biological maturation was assessed; physical activity (PA), TV viewing and socioeconomic status (SES) information was obtained...
2017: PloS One
https://www.readbyqxmd.com/read/28183862/the-mechanisms-underlying-the-muscle-metaboreflex-modulation-of-sweating-and-cutaneous-blood-flow-in-passively-heated-humans
#7
Baies Haqani, Naoto Fujii, Narihiko Kondo, Glen P Kenny
Metaboreceptors can modulate cutaneous blood flow and sweating during heat stress but the mechanisms remain unknown. Fourteen participants (31 ± 13 years) performed 1-min bout of isometric handgrip (IHG) exercise at 60% of their maximal voluntary contraction followed by a 3-min occlusion (OCC), each separated by 10 min, initially under low (LHS, to activate sweating without changes in core temperature) and high (HHS, whole-body heating to a core temperature increase of 1.0°C) heat stress conditions. Cutaneous vascular conductance (CVC) and sweat rate were measured continuously at four forearm skin sites perfused with 1) lactated Ringer's solution (Control), 2) 10 mmol L-NAME [inhibits nitric oxide synthase (NOS)], 3) 10 mmol Ketorolac [inhibits cyclooxygenase (COX)], or 4) 4 mmol theophylline (THEO; inhibits adenosine receptors)...
February 2017: Physiological Reports
https://www.readbyqxmd.com/read/28181838/physical-activity-questionnaires-do-not-accurately-estimate-fitness-in-older-women
#8
Aurora de Fátima Cabral, Marcelo M Pinheiro, Charlles Hm Castro, Marco Túlio de Mello, Sergio Tufik, Vera L Szejnfeld
OBJECTIVE: To compare the performance of International Physical Activity Questionnaire - IPAQ and Baecke questionnaire to estimate maximal oxygen uptake (VO2max) in healthy older women. METHODS: One hundred healthy women aged 60 years and older answered the IPAQ and Baecke questionnaires and underwent cardiopulmonary exercise test. Six-minute walk (6MWT), Timed up and go (TUG) and handgrip strength test (HST) were also performed. RESULTS: Mean age and body mass index were 68...
February 9, 2017: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/28180004/associations-of-sit-up-ability-with-sarcopenia-classification-measures-in-japanese-older-women
#9
REVIEW
Takashi Abe, Yu Yaginuma, Eiji Fujita, Robert S Thiebaud, Masashi Kawanishi, Takuya Akamine
To test the hypothesis that sit-up performance is associated with sarcopenia classification measures, 93 older women aged 53-78 years were divided into three groups based on achieved repetitions (30 s) for the sit-up performance test: Group 0 (G 0, n = 33) performed 0 repetitions, Group 1-9 (G 1-9, n = 30) performed between 1 and 9 repetitions, and Group 10+ (G 10+, n = 30) performed over 10 repetitions. Dual-energy X-ray absorptiometry-derived appendicular lean soft tissue mass (aLM), handgrip strength (HGS), usual walking speed, and chair stand were measured, and low muscle mass (aLM index) and poor physical function were defined according to previous studies...
December 2016: Interventional Medicine & Applied Science
https://www.readbyqxmd.com/read/28177751/evidence-of-nonlocal-muscle-fatigue-in-male-youth
#10
Aymen Ben Othman, Anis Chaouachi, Mehdi M Chaouachi, Raouf Hammami, Sofien Kasmi, David G Behm
Evidence for nonlocal muscle fatigue (NLMF) has been inconsistent in adults, with no studies investigating youth. The objective was to examine NLMF in youth. Forty-two young males (age, 10-13 years) were tested for maximal voluntary isometric contraction (MVIC) force of the ipsilateral and contralateral knee extensors at 90° and 120° knee flexion, elbow flexors at 90°, handgrip, knee extensor isokinetic torque (300(o)·s(-1) analyzed at 90(o) and 120(o) knee flexion), as well as a unilateral countermovement jump (CMJ) and Y Balance test (YBT)...
November 2, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28176405/deficits-in-anthropometric-indices-of-nutritional-status-and-motor-performance-among-low-birth-weight-children-from-maputo-city-mozambique
#11
Mario Eugénio Tchamo, Marcos André Moura-Dos-Santos, Fernanda Karina Dos Santos, António Prista, Carol Góis Leandro
OBJECTIVE: To evaluate associations between low birth weight (LBW) and anthropometry, body composition, physical fitness, and gross motor coordination among schoolchildren from Maputo, Mozambique. METHODS: A total of 353 children aged 7 to 10 years old from both genders born in Maputo (Mozambique) were sampled. The sample was divided into two groups: LBW (n = 155) and normal birth weight (NBW, n = 198). Body composition measurements and indices weight-for-age, height-for-age, and weight-for-height were assessed...
February 8, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28174169/altered-blood-flow-response-to-small-muscle-mass-exercise-in-cancer-survivors-treated-with-adjuvant-therapy
#12
Kaylin D Didier, Austin K Ederer, Landon K Reiter, Michael Brown, Rachel Hardy, Jacob Caldwell, Christopher Black, Michael G Bemben, Carl J Ade
BACKGROUND: Adjuvant cancer treatments have been shown to decrease cardiac function. In addition to changes in cardiovascular risk, there are several additional functional consequences including decreases in exercise capacity and increased incidence of cancer-related fatigue. However, the effects of adjuvant cancer treatment on peripheral vascular function during exercise in cancer survivors have not been well documented. We investigated the vascular responses to exercise in cancer survivors previously treated with adjuvant cancer therapies...
February 7, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28165360/body-composition-nutritional-profile-and-muscular-fitness-affect-bone-health-in-a-sample-of-schoolchildren-from-colombia-the-fuprecol-study
#13
Mónica Adriana Forero-Bogotá, Mónica Liliana Ojeda-Pardo, Antonio García-Hermoso, Jorge Enrique Correa-Bautista, Emilio González-Jiménez, Jacqueline Schmidt-RíoValle, Carmen Flores Navarro-Pérez, Luis Gracia-Marco, Dimitris Vlachopoulos, Javier Martínez-Torres, Robinson Ramírez-Vélez
The objective of the present study is to investigate the relationships between body composition, nutritional profile, muscular fitness (MF) and bone health in a sample of children and adolescents from Colombia. Participants included 1118 children and adolescents (54.6% girls). Calcaneal broadband ultrasound attenuation (c-BUA) was obtained as a marker of bone health. Body composition (fat mass and lean mass) was assessed using bioelectrical impedance analysis. Furthermore height, weight, waist circumference and Tanner stage were measured and body mass index (BMI) was calculated...
February 3, 2017: Nutrients
https://www.readbyqxmd.com/read/28161198/the-relationship-between-socioeconomic-status-family-income-and-measures-of-muscular-and-cardiorespiratory-fitness-in-colombian-schoolchildren
#14
Gavin R H Sandercock, Felipe Lobelo, Jorge E Correa-Bautista, Gustavo Tovar, Daniel Dylan Cohen, Gundi Knies, Robinson Ramírez-Vélez
OBJECTIVE: To determine the associations between socioeconomic status (SES) and physical fitness in a sample of Colombian youth. STUDY DESIGN: Prueba SER is cross-sectional survey of schoolchildren in Bogota, Colombia. Mass, stature, muscular fitness (standing long-jump, handgrip), and cardiorespiratory fitness (20-m shuttle run) were measured in 52 187 schoolchildren 14-16 years of age. Area-level SES was categorized from 1 (very low) to 4 (high) and parent-reported family income was categorized as low, middle, or high...
February 1, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28158982/study-protocol-thyroid-hormone-replacement-for-untreated-older-adults-with-subclinical-hypothyroidism-a-randomised-placebo-controlled-trial-trust
#15
David J Stott, Jacobijn Gussekloo, Patricia M Kearney, Nicolas Rodondi, Rudi G J Westendorp, Simon Mooijaart, Sharon Kean, Terence J Quinn, Naveed Sattar, Kirsty Hendry, Robert Du Puy, Wendy P J Den Elzen, Rosalinde K E Poortvliet, Jan W A Smit, J Wouter Jukema, Olaf M Dekkers, Manuel Blum, Tinh-Hai Collet, Vera McCarthy, Caroline Hurley, Stephen Byrne, John Browne, Torquil Watt, Douglas Bauer, Ian Ford
BACKGROUND: Subclinical hypothyroidism (SCH) is a common condition in elderly people, defined as elevated serum thyroid-stimulating hormone (TSH) with normal circulating free thyroxine (fT4). Evidence is lacking about the effect of thyroid hormone treatment. We describe the protocol of a large randomised controlled trial (RCT) of Levothyroxine treatment for SCH. METHODS: Participants are community-dwelling subjects aged ≥65 years with SCH, diagnosed by elevated TSH levels (≥4...
February 3, 2017: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/28150387/assessment-of-maximal-handgrip-strength-how-many-attempts-are-needed
#16
Esmee M Reijnierse, Nynke de Jong, Marijke C Trappenburg, Gerard Jan Blauw, Gillian Butler-Browne, Helena Gapeyeva, Jean-Yves Hogrel, Jamie S McPhee, Marco V Narici, Sarianna Sipilä, Lauri Stenroth, Rob C van Lummel, Mirjam Pijnappels, Carel G M Meskers, Andrea B Maier
BACKGROUND: Handgrip strength (HGS) is used to identify individuals with low muscle strength (dynapenia). The influence of the number of attempts on maximal HGS is not yet known and may differ depending on age and health status. This study aimed to assess how many attempts of HGS are required to obtain maximal HGS. METHODS: Three cohorts (939 individuals) differing in age and health status were included. HGS was assessed three times and explored as continuous and dichotomous variable...
February 2, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28149429/physiological-nutritional-and-performance-profiles-of-brazilian-jiu-jitsu-athletes
#17
Leonardo V Andreato, Jonatas Fs Santos, João Vdc Esteves, Valeria Lg Panissa, Ursula F Julio, Emerson Franchini
This study analysed the physiological, nutritional and performance profiles of athletes practicing Brazilian jiu-jitsu. To this end, 15 athletes that practiced Brazilian jiu-jitsu (aged: 28 ± 5 years; 8 brown belts and 7 black belts; training experience: 11 ± 4 years) underwent anthropometric measurements (body composition and somatotype), dietary evaluation (24 h recall) and physical fitness tests (movement time, dynamometer handgrip, kimono grip strength, vertical jump and sit-and-reach tests). The athletes had 12...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28143709/arterial-hypertension-in-migraine-role-of-familial-history-and-cardiovascular-phenotype
#18
Laura Babayan, Oleg V Mamontov, Alexander V Amelin, Mikhail Bogachev, Alexei A Kamshilin
Recent studies indicate that migraine is associated with increased risk of cardiovascular diseases. However, links between autonomic cardiovascular regulation, arterial hypertension (AH) and migraine are still little explored. In this study, we evaluated autonomic regulation in migraine patients with and without hypertension. We studied 104 patients with migraine, aged 34±10 y, including 28 with and 76 without hypertension (M+AH and M-AH groups, respectively). The control group consisted of 88 healthy volunteers matched by age and sex...
January 25, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28138724/the-steerable-microcatheter-a-new-device-for-selective-catheterisation
#19
Takeshi Soyama, Daisuke Yoshida, Yusuke Sakuhara, Ryo Morita, Daisuke Abo, Kohsuke Kudo
The steerable microcatheter (SwiftNINJA, Sumitomo Bakelite, Tokyo, Japan), which has a remote-controlled flexible tip manipulated using a dial in the handgrip, was recently developed and delivered to the market. This device enables the user to change the angle of the microcatheter tip manually, and potentially makes selective catheterisation easier. We evaluated its unique characteristics and utility in selective catheterisation and coil embolization. This article describes: (1) the advantages of this device in catheterisations involving acute angle branches, and (2) a new technique of compact coil packing with the use of intentional folding by the bendable tip of the catheter...
January 30, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28138227/electromyographic-activity-of-masticatory-muscles-in-elderly-women-a-pilot-study
#20
Ewelina Gaszynska, Karolina Kopacz, Magdalena Fronczek-Wojciechowska, Gianluca Padula, Franciszek Szatko
OBJECTIVES: To evaluate the effect of age and chosen factors related to aging such as dentition, muscle strength, and nutrition on masticatory muscles electromyographic activity during chewing in healthy elderly women. BACKGROUND: With longer lifespan there is a need for maintaining optimal quality of life and health in older age. Skeletal muscle strength deteriorates in older age. This deterioration is also observed within masticatory muscles. METHODS: A total of 30 women, aged 68-92 years, were included in the study: 10 individuals had natural functional dentition, 10 were missing posterior teeth in the upper and lower jaw reconstructed with removable partial dentures, and 10 were edontoulous, using complete removable dentures...
2017: Clinical Interventions in Aging
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