Read by QxMD icon Read

exercise stress test

Yaira Barranco-Ruiz, Antonio Martínez-Amat, Cristina Casals, Jerónimo Aragón-Vela, Silvia Rosillo, Silvana N Gomes, Ana Rivas-García, Rafael Guisado, Jesús R Huertas
The effect of exercise-induced oxidative stress on health and aging is not clearly explained. This study examined the effects of habitual sport practice, age, and submaximal exercise on the blood markers of oxidative stress, muscle damage, and antioxidant response. Seventy-two healthy men were grouped by their habitual sport practice: inactive (<1.5 h/week), recreational (3-8 h/week), and trained athletes (>8 h/week), and further divided by age: young (18-25 years), adult (40-55 years), and senior (>55 years)...
October 20, 2016: Journal of Physiology and Biochemistry
Raoyrin Chanavirut, Pattarapong Makarawate, Ian A Macdonald, Naruemon Leelayuwat
BACKGROUND: Imbalances of the autonomic nervous (ANS), the cardiovascular system, and ionics might contribute to the manifestation of The Brugada Syndrome (BrS). Thus, this study has aimed to investigate the cardio-respiratory fitness and the responses of the ANS both at rest and during a sub-maximal exercise stress test, in BrS patients and in gender-matched and age-matched healthy sedentary controls. METHODS: Eleven BrS patients and 23 healthy controls were recruited in Khon Kaen, Thailand...
October 2016: Journal of Arrhythmia
Nari Ahn, Yea Hyun Leem, Morimasa Kato, Hyukki Chang
PURPOSE: The effects of creatine and exercise on chronic stress-induced depression are unclear. In the present study, we identified the effects of 4-week supplementation of creatine monohydrate and/or exercise on antidepressant behavior and raphe 5-HT expression in a chronic mild stress-induced depressed mouse model. METHODS: Seven-week-old male C57BL/6 mice (n=48) were divided randomly into 5 groups: (1) non-stress control (CON, n=10), (2) stress control (ST-CON, n=10), (3) stress and creatine intake (ST-Cr, n=10), (4) stress and exercise (ST-Ex, n=9), and (5) combined stress, exercise, and creatine intake (ST-Cr+Ex, n=9)...
September 2016: Journal of Exercise Nutrition & Biochemistry
Ali Eshraghi, Reyhaneh Takalloo Ebdali, Seyed Sajed Sajjadi, Reza Golnezhad
INTRODUCTION: It is believed that an exaggerated blood pressure response (EBPR) to exercise stress test is associated with a higher risk of cardiovascular events. It is also assumed that QT dispersion (QT-d), which was originally proposed to measure the spatial dispersion of ventricular recovery times, may have a relationship to cardiovascular events. The objective of this study was to examine the difference of changes in QT-d, Maxi-QT, Mini-QT, and QT-c (corrected QT interval) of the electrocardiogram in two groups of patients with exaggerated blood pressure responses (EBPR group) and normal responses (control group) to exercise testing...
August 2016: Electronic Physician
Shirley J Ingram, Gabrielle McKee, Mary B Quirke, Niamh Kelly, Ashling Moloney
BACKGROUND: Chest pain is a common presentation to emergency departments (EDs). Pathways for patients with non-acute coronary syndrome (ACS) chest pain are not optimal. An advanced cardiology nurse-led chest pain service was commenced to address this. The aim of the study was to assess the outcomes of non-ACS patients discharged from ED to an advanced cardiology nurse-led chest pain clinic and compare by referral type (nurse or ED physician). METHODS: The service consisted of advanced cardiology nurse or ED physician consultation in the ED and discharge to advanced nurse-led chest pain clinic review less than 72 hours after discharge...
October 14, 2016: Journal of Cardiovascular Nursing
James Sharman
Millions of clinical exercise stress tests are conducted annually worldwide. The fundamental rationale underlying the conduct of these tests is that cardiovascular irregularities may be revealed during an exercise bout that would otherwise remain unnoticed if testing was only conducted under resting conditions. In order to reveal electrocardiographic abnormalities indicative of cardiac disease, maximal intensity exercise may need to be undertaken, whereas the presence of hypertension can be revealed by the blood pressure response at low to moderate intensity exercise...
September 2016: Journal of Hypertension
Ivana Burazor, Stamenko Susak
OBJECTIVE: After stent or bypass surgery blood pressure (BP) can go up for multiple reasons among which are: stress and tense of the patient unsure about the future, the pain of the cut and because some of the blood pressure medication, which the patient was receiving preoperatively may get withdrawn post operatively, thereby leading to shooting up the BP. In certain patients, BP actually comes down after surgery and returns back to the pre-operative levels 4 to 6 weeks down the track...
September 2016: Journal of Hypertension
Scott J Dankel, Kevin T Mattocks, Matthew B Jessee, Samuel L Buckner, J Grant Mouser, Brittany R Counts, Gilberto C Laurentino, Jeremy P Loenneke
The principle of progressive overload must be adhered to for individuals to continually increase muscle size with resistance training. While the majority of trained individuals adhere to this principle by increasing the number of sets performed per exercise session, this does not appear to be an effective method for increasing muscle size once a given threshold is surpassed. Opposite the numerous studies examining differences in training loads and sets of exercise performed, a few studies have assessed the importance of training frequency with respect to muscle growth, none of which have tested very high frequencies of training (e...
October 17, 2016: Sports Medicine
Yusuf Ziya Tan, Semra Özdemir, Burak Altun, Fatmanur Çelik
OBJECTIVE: This study aimed to investigate the effects of assessment with myocardial perfusion scintigraphy (MPS) and heart rate recovery (HRrec) measurements in combination to evaluate the current status of patients with a diagnosis or suspicion of coronary artery disease (CAD). METHODS: A total of 350 patients were included in the study. CAD group consisted of 200 patients with stable angina pectoris and a known history of CAD, while the control group consisted of 150 patients with suspicious stress test who had no history of known CAD...
October 5, 2016: Molecular Imaging and Radionuclide Therapy
Mahmoud Al Rifai, Jaideep Patel, Rupert K Hung, Khurram Nasir, Steven J Keteyian, Clinton A Brawner, Jonathan K Ehrman, Sherif Sakr, Roger S Blumenthal, Michael J Blaha, Mouaz H Al-Mallah
BACKGROUND: Cardiorespiratory fitness protects against mortality; however, little is known about the benefits of improved fitness in individuals with a family history of coronary heart disease. We studied the association between cardiorespiratory fitness and risk of incident coronary heart disease and all-cause mortality, hypothesizing an inverse relationship similar to individuals without a family history of coronary heart disease. METHODS: We included 57,999 patients (53±13 years; 49% females; 29% Black), from the Henry Ford Exercise Testing (FIT) Project...
October 14, 2016: American Journal of Medicine
David Hernando, Nuria Garatachea, Rute Almeida, Jose Antonio Casajús, Raquel Bailón
Heart rate variability (HRV) analysis during exercise is an interesting non-invasive tool to measure the cardiovascular response to the stress of exercise. Wearable heart rate monitors are a comfortable option to measure RR intervals while doing physical activities. It is necessary to evaluate the agreement between HRV parameters derived from the RR series recorded by wearable devices and those derived from an ECG during dynamic exercise of low to high intensity.23 male volunteers performed an exercise stress test on a cycle ergometer...
September 27, 2016: Journal of Strength and Conditioning Research
Joanna Majerczak, Marcin Grandys, Krzysztof Duda, Agnieszka Zakrzewska, Aneta Balcerczyk, Leszek Kolodziejski, Dorota Szymoniak-Chochol, Ryszard T Smolenski, Grzegorz Bartosz, Stefan Chlopicki, Jerzy A Zoladz
In this study we have evaluated the effect of 20-weeks of moderate-intensity endurance training (ET) on the endothelial glycocalyx layer integrity in relation to the training-induced changes in antioxidant defence. Eleven healthy young, untrained men performed an incremental cycling exercise until exhaustion before and after 20 weeks of ET. Endurance training consisted of 40- minute sessions, mainly of moderate-intensity (∼50% of VO2max ), performed 4 times per week. Venous blood samples were taken at rest and at the end of the maximal exercise test...
October 17, 2016: Experimental Physiology
Agnieszka Wsol, Wioletta Wydra, Marek Chmielewski, Andrzej Swiatowiec, Marek Kuch
BACKGROUND: A retrospective study was designed to investigate P-wave duration changes in exercise stress (EST) test for the prediction of angiographically documented substantial coronary artery disease (CAD). METHODS: We analyzed 265 cases of patients, who underwent EST and subsequently coronary angiography. Analysis of P-wave duration was performed in leads II, V5 at rest, and in the recovery period. RESULTS: The sensitivity and specificity for the isolated ST-segment depression were only 31% and 76%, respectively...
October 17, 2016: Cardiology Journal
Sabina Cauci, Cinzia Buligan, Micaela Marangone, Maria Pia Francescato
BACKGROUND: Oxidative stress in female athletes is understudied. We investigated oxidative stress in sportswomen of different disciplines according to combined oral contraceptive (OC) use and lifestyle/alimentary habits. METHODS: Italian sportswomen (n = 144; mean age 23.4 ± 4.2 years; body mass index 21.2 ± 2.2 kg m(-2); sport activity 9.2 ± 4.1 h week(-1)) were analyzed; 48 % were volleyball players, 12.5 % soccer players, 10.4 % track-and-field sports, and followed by other disciplines' athletes...
December 2016: Sports Medicine—Open
Liying Ying, Xiaomin Chen, Lai Har Wu, Jing Shu, Xiangli Wu, Alice Yuen Loke
PURPOSE: Couples as dyads suffer from the diagnosis of infertility and related treatment. These couples commonly experience emotional and physical pain and tension in their marital lives. The purpose of this study is to report on the process of developing a potentially feasible and effective complex intervention for couples undergoing in vitro fertilization treatment in China. METHODS: The Medical Research Council (MRC) framework for developing and evaluating the complex intervention was adopted to guide the development of the Partnership and Coping Enhancement Programme (PCEP)...
October 15, 2016: Journal of Assisted Reproduction and Genetics
Eric Hermand, François J Lhuissier, Nicolas Voituron, Jean-Paul Richalet
We evaluated the mechanisms responsible for the instability of ventilation control system under simultaneous metabolic (exercise) and environmental (hypoxia) stresses, promoting the genesis of periodic breathing. A model following the main concepts of ventilatory control has been tested, including cardiovascular and respiratory parameters, characteristics of peripheral and central chemoreceptors, at mild exercise in hypoxia (FIO2=0.145). Interaction between O2 and CO2 sensing was introduced following three different modalities...
October 12, 2016: Journal of Theoretical Biology
Zach Rozenbaum, Shafik Khoury, Galit Aviram, Yaniv Gura, Jack Sherez, Avi Man, Jason Shimiaie, Thierry Le Tourneau, Amir Halkin, Simon Biner, Gad Keren, Yan Topilsky
BACKGROUND: Discriminating circulatory problems with reduced stroke volume from de-conditioning in which the muscles cannot consume O2 normally by gas exchange parameters is difficult. METHODS: We performed combined stress echo and cardio-pulmonary (CPET) tests in 110 patients (20 normal effort capacity, 54 attenuated stroke volume response, 36 de-conditioning) to evaluate multiple hemodynamic parameters and oxygen content difference (A-VO2 Difference) in four predefined activity levels to assess which of the gas measures may help in the discrimination...
October 11, 2016: Chest
Eun Young Han, Sang Hee Im, Bo Ryun Kim, Min Ji Seo, Myeong Ok Kim
OBJECTIVE: Brachial-ankle pulse wave velocity (baPWV) evaluates arterial stiffness and also predicts early outcome in stroke patients. The objectives of this study were to investigate arterial stiffness of subacute nonfunctional ambulatory stroke patients and to compare the effects of robot-assisted gait therapy (RAGT) combined with rehabilitation therapy (RT) on arterial stiffness and functional recovery with those of RT alone. METHOD: The RAGT group (N = 30) received 30 minutes of robot-assisted gait therapy and 30 minutes of conventional RT, and the control group (N = 26) received 60 minutes of RT, 5 times a week for 4 weeks...
October 2016: Medicine (Baltimore)
Xavier Capó, Miquel Martorell, Antoni Sureda, Joan Riera, Franchek Drobnic, Josep Antoni Tur, Antoni Pons
n-3-polyunsaturated fatty acids and polyphenols are potential key factors for the treatment and prevention of chronic inflammation associated to ageing and non-communicable diseases. The aim was to analyse effects of an almond and olive oil beverage enriched with α-tocopherol and docosahexaenoic, exercise and age on inflammatory plasma markers, and immune gene expression in peripheral blood mononuclear cells (PBMCs). Five young and five senior athletes who were supplemented for five weeks with a functional beverage performed a stress test under controlled conditions before and after beverage supplementation...
October 9, 2016: Nutrients
Alireza Khoshdel, Shane Carney, Saxon White, Alastair Gillies
INTRODUCTION: Kidney disease increases the risk of cardiovascular disease. The corollary of that observation should be that cardiovascular disease would not only increase the risk of kidney dysfunction, but also cause kidney damage, a concept not previously proposed. MATERIALS AND METHODS: Hemodynamic response to a graded exercise stress test was measured in 70 candidates to evaluate the association of heart rate and blood pressure change, heart rate reserve, chronotropic incompetence (percentage of achievement of maximal predicted heart rate), and circulatory power with development of kidney failure (glomerular filtration rate < 30 mL/min/1...
September 2016: Iranian Journal of Kidney Diseases
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"