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https://www.readbyqxmd.com/read/28338362/the-effects-of-caffeine-taurine-or-caffeine-taurine-co-ingestion-on-repeat-sprint-cycling-performance-and-physiological-responses
#1
Rory Warnock, Owen Jeffries, Stephen Patterson, Mark Waldron
PURPOSE: This study investigated the effects of caffeine (C), taurine (T), caffeine and taurine co-ingestion (C+T) or placebo (P) on repeated Wingate cycling performance and associated physiological responses. METHODS: Seven male team sports players participated in a randomised, single-blind, cross-over study, where they completed three Wingate tests, each separated by 2-min, an hour after ingesting: C (5 mg/kg BM), T (50 mg/kg BM), C+T (5 mg/kg BM + 50 mg/kg BM) or P (5 mg/kg BM) in a gelatine capsule...
March 24, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28337160/the-association-between-self-reported-difficulties-in-emotion-regulation-and-heart-rate-variability-the-salient-role-of-not-accepting-negative-emotions
#2
Endre Visted, Lin Sørensen, Berge Osnes, Julie L Svendsen, Per-Einar Binder, Elisabeth Schanche
Difficulties in emotion regulation are associated with development and maintenance of psychopathology. Typically, features of emotion regulation are assessed with self-report questionnaires. Heart rate variability (HRV) is an objective measure proposed as an index of emotional regulation capacity. A limited number of studies have shown that self-reported difficulties in emotion regulation are associated with HRV. However, results from prior studies are inconclusive, and an ecological validation of the association has not yet been tested...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28332737/association-between-resting-heart-rate-just-before-starting-the-first-dialysis-session-and-mortality-a-multicenter-prospective-cohort-study
#3
Daijo Inaguma, Shigehisa Koide, Kazuo Takahashi, Hiroki Hayashi, Midori Hasegawa, Yukio Yuzawa
AIM: Some observational studies of the general population showed that resting heart rate was associated with mortality. However, the relationship was unclear in dialysis patients. METHODS: The study was a multicenter prospective cohort analysis including 1,102 patients. Patients were classified into four groups based on resting heart rate just before starting the first dialysis session: <60/min; 60-79/min; 80-100/min; and ≥101/min. All-cause mortality, cardiovascular (CV) related mortality, and incidences of CV events after dialysis initiation were compared using the log-rank test...
March 23, 2017: Nephrology
https://www.readbyqxmd.com/read/28331306/is-cardiac-autonomic-modulation-during-upper-limb-isometric-contraction-and-valsalva-maneuver-impaired-in-copd-patients
#4
Cássia da Luz Goulart, Ramona Cabiddu, Paloma de Borba Schneiders, Elisabete Antunes San Martin, Renata Trimer, Audrey Borghi-Silva, Andréa Lúcia Gonçalves da Silva
PURPOSE: To evaluate the heart rate variability (HRV) indices and heart rate (HR) responses during isometric contraction (IC) and Valsalva maneuver (VM) in COPD patients. METHODS: Twenty-two stable moderate to severe COPD patients were evaluated. R-R intervals were recorded (monitor Polar(®) S810i) during dominant upper limb IC (2 minutes). Stable signals were analyzed by Kubios HRV(®) software. Indices of HRV were computed in the time domain (mean HR; square root of the mean squared differences of successive RR intervals [RMSSD] and HRV triangular index [RR tri index]) and in the frequency domain (high frequency [HF]; low frequency [LF] and LF/HF ratio)...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28330948/correction-to-resting-heart-rate-trajectory-pattern-predicts-arterial-stiffness-in-a-community-based-chinese-cohort
#5
(no author information available yet)
No abstract text is available yet for this article.
April 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28325020/socioeconomic-status-age-and-heart-rate-variability-in-a-bangladeshi-community
#6
Nishat E-Sharmin Trisha, Herbert F Jelinek, Mika P Tarvainen, David J Cornforth, Dewan S Alam, Megan Smith
Socioeconomic status (SES) is a risk factor for cardiovascular disease (CVD) and either low or high heart rate variability (HRV) at rest has been shown to predict cardiovascular morbidity and mortality. The study investigated the extent HRV features can predict SES. Four hundred and twenty eight people were randomly selected from the commercial districts (high SES) and slum areas (low SES) within Dhaka city. Demographic, clinical, and HRV features were recorded. Of the clinical variables age, waist circumference and diastolic blood pressure (p<;0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28323361/heart-rate-variability-parameters-in-horses-distinguish-atrial-fibrillation-from-sinus-rhythm-before-and-after-successful-electrical-cardioversion
#7
B Broux, D De Clercq, A Decloedt, S Ven, L Vera, G van Steenkiste, K Mitchell, C Schwarzwald, G van Loon
BACKGROUND: Atrial fibrillation (AF) is the most common pathological arrhythmia in horses. After successful treatment, recurrence is common. Heart rate monitors are easily applicable in horses and some devices offer basic heart rate variability (HRV) calculations. If HRV can be used to distinguish between AF and sinus rhythm (SR), this could become a monitoring tool for horses at risk for recurrence of AF. OBJECTIVES: The purpose of this study was to assess whether in horses AF (before cardioversion) and SR (after cardioversion) can be differentiated based upon HRV parameters...
March 21, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28322688/correction-cardiopulmonary-exercise-testing
#8
Kenneth Leclerc
In the article, "Cardiopulmonary exercise testing: A contemporary and versatile clinical tool" (Leclerc K, Cleve Clin J Med 2017; 84:161-168), an error occurred in Table 1. Heart rate reserve was defined as maximum heart rate minus resting heart rate. It should be defined as (maximum heart rate minus resting heart rate) divided by (predicted maximum heart rate minus resting heart rate).
March 2017: Cleveland Clinic Journal of Medicine
https://www.readbyqxmd.com/read/28320488/the-effect-of-rider-weight-and-additional-weight-in-icelandic-horses-in-t%C3%A3-lt-part-i-physiological-responses
#9
G J Stefánsdóttir, V Gunnarsson, L Roepstorff, S Ragnarsson, A Jansson
This study examined the effect of increasing BW ratio (BWR) between rider and horse, in the BWR range common for Icelandic horses (20% to 35%), on heart rate (HR), plasma lactate concentration (Lac), BWR at Lac 4 mmol/l (W4), breathing frequency (BF), rectal temperature (RT) and hematocrit (Hct) in Icelandic horses. In total, eight experienced school-horses were used in an incremental exercise test performed outdoors on an oval riding track and one rider rode all horses. The exercise test consisted of five phases (each 642 m) in tölt, a four-beat symmetrical gait, at a speed of 5...
March 21, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28319189/lung-function-parameters-improve-prediction-of-vo2peak-in-an-elderly-population-the-generation-100-study
#10
Erlend Hassel, Dorthe Stensvold, Thomas Halvorsen, Ulrik Wisløff, Arnulf Langhammer, Sigurd Steinshamn
Peak oxygen uptake (VO2peak) is an indicator of cardiovascular health and a useful tool for risk stratification. Direct measurement of VO2peak is resource-demanding and may be contraindicated. There exist several non-exercise models to estimate VO2peak that utilize easily obtainable health parameters, but none of them includes lung function measures or hemoglobin concentrations. We aimed to test whether addition of these parameters could improve prediction of VO2peak compared to an established model that includes age, waist circumference, self-reported physical activity and resting heart rate...
2017: PloS One
https://www.readbyqxmd.com/read/28315565/heart-rate-variability-in-normal-weight-patients-with-polycystic-ovary-syndrome
#11
Celal Kilit, Türkan Paşalı Kilit
OBJECTIVE: Polycystic ovary syndrome (PCOS) is an endocrine disease closely related to several risk factors of cardiovascular disease. Obese women with PCOS show altered autonomic modulation. The results of studies investigating cardiac autonomic functions of normal-weight women with PCOS are conflicting. The aim of the study was to assess the reactivity of cardiac sympathovagal balance in normal-weight women with PCOS by heart rate variability analysis. METHODS: We examined the heart rate variability in 60 normal-weight women with PCOS and compared them with that in 60 age-matched healthy women having a similar metabolic profile...
March 9, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28303774/physiological-evaluation-of-personal-protective-ensembles-recommended-for-use-in-west-africa
#12
Aitor Coca, Tyler Quinn, Jung-Hyun Kim, Tianzhou Wu, Jeff Powell, Raymond Roberge, Ronald Shaffer
OBJECTIVE: Personal protective equipment (PPE) provides health care workers with a barrier to prevent human contact with viruses like Ebola and potential transmission of the disease. However, PPE can also introduce an additional physiological burden from potentially increased heat stress. This study evaluated the human physiological and subjective responses to continuous light exercise within environmental conditions similar to those in West Africa while wearing 3 different, commonly used PPE ensembles (E1, E2, and E3)...
March 17, 2017: Disaster Medicine and Public Health Preparedness
https://www.readbyqxmd.com/read/28301436/the-effects-of-recovery-duration-during-high-intensity-interval-exercise-on-time-spent-at-high-rates-of-oxygen-consumption-oxygen-kinetics-and-blood-lactate
#13
Ilias Smilios, Aristides Myrkos, Andreas Zafeiridis, Argyris Toubekis, Apostolos Spassis, Savas P Tokmakidis
The recovery duration and the work to recovery ratio are important aspects to consider when designing a high-intensity aerobic interval exercise (HIIE). This study examined the effects of recovery duration on total exercise time performed above 80, 90 and 95% of maximum oxygen consumption (VO2max) and heart rate (HRmax) during a single-bout HIIE. We also evaluated the effects on VO2 and HR kinetics, blood lactate concentration and rating of perceived exertion (RPE). Eleven moderately trained males (22.1±1 yrs...
March 13, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28300048/cardiovascular-responses-to-millet-pounding-activity-among-women-in-a-rural-community-in-northeastern-nigeria
#14
Adetoyeje Y Oyeyemi, Fati Jajimaji, Adewale L Oyeyemi, Abdul-Hameed A Jabbo
BACKGROUND: Pounding food items in a wooden mortal is a common home chore in many communities in African and Asian countries. However, no empirical data exist on energy expenditure during this activity, and whether the activity can be considered a light, moderate, or vigorous intensity physical activity is unknown. PURPOSE: This study was aimed at gaining insights into energy expenditure during millet pounding through cardiovascular responses to millet pounding activity, and to explore possible differences in response between women who pound millet as their occupation (habitual millet pounders) and those who pound millet only for their own home cooking but not as a job (nonhabitual pounders)...
January 2017: Annals of African Medicine
https://www.readbyqxmd.com/read/28298781/analgesic-efficacy-of-transverse-abdominal-plane-block-after-elective-cesarean-delivery-bupivacaine-with-fentanyl-versus-bupivacaine-alone-a-randomized-double-blind-controlled-clinical-trial
#15
Roshan John, R V Ranjan, T R Ramachandran, Sagiev Koshy George
BACKGROUND: The analgesic benefit of transversus abdominis plane (TAP) blocks for cesarean delivery remains controversial. In our study, we compared the analgesic efficacy of TAP block using local anesthetic bupivacaine and adjunct fentanyl with bupivacaine alone in patients undergoing elective cesarean section. METHODS: Our study was a randomized, double-blind, controlled clinical trial where sixty patients undergoing elective cesarean delivery under subarachanoid block (2 ml of 0...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298766/comparison-of-perioperative-thoracic-epidural-fentanyl-with-bupivacaine-and-intravenous-fentanyl-for-analgesia-in-patients-undergoing-coronary-artery-bypass-grafting-surgery
#16
Amitabh Chanchal Sen, Sunil Rajan, Rakhi Balachandran, Lakshmi Kumar, Suresh Gangadharan Nair
CONTEXT: Two-thirds of patients undergoing coronary artery bypass grafting (CABG) surgery report moderate to severe pain, particularly with ambulatory or respiratory effort. AIMS: The aim of this study is to compare the analgesic effect of perioperative thoracic epidural fentanyl with bupivacaine and intravenous fentanyl in patients undergoing CABG surgery. SETTINGS AND DESIGN: The study was a prospective, randomized, nonblinded comparative study...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28296232/inhibitors-of-soluble-epoxide-hydrolase-minimize-ischemia-reperfusion-induced-cardiac-damage-in-normal-hypertensive-and-diabetic-rats
#17
Oliul Islam, Prashanth Patil, Sumanta K Goswami, Rema Razdan, Mohammed N Inamdar, Mohammed Rizwan, Jubin Mathew, Bora Inceoglu, Kin S Stephen Lee, Sung H Hwang, Bruce D Hammock
AIM: We designed a study to evaluate the cardioprotective effect of two soluble epoxide hydrolase (sEH) inhibitors, 1-(1-propanoylpiperidin-4-yl)-3-(4-trifluoromethoxy)phenyl)urea (TPPU) and trans-4-{4-[3-(4-trifluoromethoxyphenyl)-ureido]cyclohexyloxy}benzoic acid (t-TUCB), in ischemia-reperfusion (IR) model. METHODS: Cardioprotective effects of the sEH inhibitors were evaluated against IR-induced myocardial damage in hearts from normal, hypertensive and diabetic rats using Langendorff's apparatus...
March 15, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28295842/police-work-stressors-and-cardiac-vagal-control
#18
Michael E Andrew, John M Violanti, Ja K Gu, Desta Fekedulegn, Shengqiao Li, Tara A Hartley, Luenda E Charles, Anna Mnatsakanova, Diane B Miller, Cecil M Burchfiel
OBJECTIVES: This study examines relationships between the frequency and intensity of police work stressors and cardiac vagal control, estimated using the high frequency component of heart rate variability (HRV). METHODS: This is a cross-sectional study of 360 officers from the Buffalo New York Police Department. Police stress was measured using the Spielberger police stress survey, which includes exposure indices created as the product of the self-evaluation of how stressful certain events were and the self-reported frequency with which they occurred...
March 14, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28291817/specific-changes-in-circulating-cytokines-and-growth-factors-induced-by-exercise-stress-testing-in-asymptomatic-aortic-valve-stenosis
#19
Renata Kolasa-Trela, Malgorzata Konieczynska, Marta Bazanek, Anetta Undas
BACKGROUND: We evaluated exercise-induced changes in the profile of circulating cytokines and growth factors in patients with AS. METHODS: We studied 32 consecutive asymptomatic moderate-to-severe AS patients and 32 age and sex-matched controls. Plasma levels of interleukin (IL)-6, IL-10, hepatocyte growth factor (HGF), vascular endothelial growth factor (VEGF), and transforming growth factor (TGF)-β were measured at 4 time points, i.e. at rest, at peak bicycle exercise, one hour and 24 hours after a symptom-limited exercise...
2017: PloS One
https://www.readbyqxmd.com/read/28291022/effects-of-descending-stair-walking-on-health-and-fitness-of-elderly-obese-women
#20
Trevor C Chen, Chung-Chan Hsieh, Kuo-Wei Tseng, Chih-Chiao Ho, Kazunori Nosaka
PURPOSE: Eccentric exercise training produces positive fitness and health outcomes, but whether this is also the case for descending stair walking (DSW) is unknown. This study investigated the hypothesis that DSW would improve insulin sensitivity, lipid profiles and physical fitness better than ascending stair walking (ASW). METHODS: Elderly (≥60 y) obese women were placed to either DSW or ASW group (n=15/group). An elevator was used to eliminate ascending stairs for DSW, and descending stairs for ASW...
March 13, 2017: Medicine and Science in Sports and Exercise
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