Vivian Maria Arakelian

ORCID: 0000-0002-7049-4769
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About
Contact & Profiles
Research Areas
  • Cardiovascular and exercise physiology
  • Heart Rate Variability and Autonomic Control
  • Sports Performance and Training
  • Muscle metabolism and nutrition
  • Non-Invasive Vital Sign Monitoring
  • Exercise and Physiological Responses
  • Pulmonary Hypertension Research and Treatments
  • Children's Physical and Motor Development
  • Diabetes Management and Research
  • Blood Pressure and Hypertension Studies
  • Muscle activation and electromyography studies
  • Physical Activity and Health
  • Cardiac Health and Mental Health
  • Heart rate and cardiovascular health
  • Chronic Obstructive Pulmonary Disease (COPD) Research
  • Body Composition Measurement Techniques
  • Infrared Thermography in Medicine
  • Cardiovascular Issues in Pregnancy
  • Advanced Chemical Sensor Technologies
  • Cardiovascular Function and Risk Factors
  • Adipose Tissue and Metabolism
  • Diabetes, Cardiovascular Risks, and Lipoproteins
  • Laser Applications in Dentistry and Medicine
  • High Altitude and Hypoxia
  • Hemodynamic Monitoring and Therapy

Universidade Nove de Julho
2017-2021

Universidade Federal de São Carlos
2011-2019

Universidade de São Paulo
2012-2018

Massachusetts General Hospital
2017

Harvard University
2017

Harvard–MIT Division of Health Sciences and Technology
2017

Serviço Nacional de Aprendizagem Comercial
2016

University of Illinois Chicago
2016

Universidad San Carlos
2016

Foundation for Physical Medicine and Rehabilitation
2016

Summary Resistance incremental tests (IT) make it possible to determine critical metabolic and cardiovascular changes, such as the lactate threshold (LT). Different methods are frequently used improve exactness of LT identification. The objective study was identify by four different (visual inspection, log–log, algorithmic adjustment QLac) during resistance exercise evaluate which present more precision. Twelve men performed a maximal IT on leg press at relative intensities 10%, 20%, 25%,...

10.1111/j.1475-097x.2011.01027.x article EN Clinical Physiology and Functional Imaging 2011-04-25

Objective The aim of this study was to verify how a pair monozygotic twins would respond light-emitting diode therapy (LEDT) or placebo combined with strength-training program during 12 weeks. Design This case-control enrolled male twins, allocated randomly LEDT therapies. Light-emitting applied from flexible array (λ = 850 nm, total energy 75 J, t 15 seconds) both quadriceps femoris muscles each twin immediately after strength training session (3 times/wk for weeks) consisting leg press and...

10.1097/phm.0000000000000490 article EN American Journal of Physical Medicine & Rehabilitation 2016-05-13

Concurrent aerobic and resistance training (CART) programs have been widely recommended as an important strategy to improve physiologic functional performance in patients with chronic diseases. However, the impact of a personalized CART program type 2 diabetes (T2D) requires investigation. Therefore, primary aim current study is investigate on metabolic profile, glycemic control, exercise capacity diabetes. We evaluated 41 subjects T2D (15 females 19 males, 50.8 ± 7 years); were randomized...

10.1186/s40798-016-0052-1 article EN cc-by Sports Medicine - Open 2016-08-11

The aim of this work was to evaluate the hemodynamic, autonomic, and metabolic responses during resistance dynamic exercise before after an 8-week training program using a low-intensity (30% 1 repetitium maximum), high-repetition (3 sets 20 repetitions) model, added aerobic program, in coronary artery disease cohort.Twenty male subjects with (61.1 ± 4.7 years) were randomly assigned combined group (resistance + aerobic) or (AG). Heart rate, stroke volume, cardiac output, minute ventilation,...

10.1097/phm.0000000000000568 article EN American Journal of Physical Medicine & Rehabilitation 2016-07-07

Background: Type 2 diabetes Mellitus (T2DM) is associated with cardiac autonomic dysfunction, which an independent predictor of mortality in chronic diseases. However, whether the coexistence systemic arterial hypertension (HTN) DMT2 alters modulation remains unknown. Objective: To evaluate influence HTN on and cardiorespiratory fitness subjects DMT2. Methods: 60 patients both genders were evaluated allocated to two groups: (n = 32; 51 ± 7.5 years old) + 28; 6.9 old). RR intervals obtained...

10.5935/abc.20180105 article EN cc-by-nc Arquivos Brasileiros de Cardiologia 2018-01-01

BACKGROUND: The prognosis of Pulmonary Hypertension (PH) is directly correlated with the functional capacity (FC). most common FC test 6-Minute Walk Test (6MWT), however, there evidence to suggest that 6MWT does not reflect real in PH patients.AIM: To compare physiological responses among three field walk tests and cardiopulmonary exercise testing (CPET) patients pulmonary hypertension (PH), determine determinants distance walked tests.DESIGN: Cross sectional study.SETTING: Outpatient...

10.23736/s1973-9087.21.06561-8 article EN European Journal of Physical and Rehabilitation Medicine 2021-09-01

INTRODUCTION: It is well known that type 2 diabetes mellitus (T2DM) produces cardiovascular autonomic neuropathy (CAN), which may affect the cardiac modulation. However, it unclear whether lack of glycemic control in T2DM without CAN could impact negatively on Objective: To evaluate relationship between and modulation individuals with CAN. Descriptive, prospective cross sectional study.METHODS: Forty-nine patients (51±7 years) were divided into two groups according to glycosylated hemoglobin...

10.1590/1517-869220152104150003 article EN Revista Brasileira de Medicina do Esporte 2015-08-01

Aim was to identify critical load (CL) in young and elderly apparently healthy male cohorts. To contrast the metabolic, cardiovascular perceptual responses on CL according age. We evaluated 12 (23 ± 3 years) 10 (70 2 active males, who underwent: (1) 1 repetition maximum (1RM) test a 45° Leg Press; (2) different days, three high-intensity resistance exercise constant tests (60%, 75% 90% 1RM) until fatigue (Tlim). Absolute values of both asymptote curvature (kg) were significantly lower...

10.1080/02640414.2018.1561389 article EN Journal of Sports Sciences 2018-12-30

Summary Background Non‐invasive assessment of haemodynamic function by impedance cardiography ( IC ) constitutes an interesting approach to monitor cardiac in patients with coronary artery disease CAD ). However, such measurements are most often performed at rest, whereas symptoms also possible during exertion, particularly higher intensities. In addition, the association between exertion and cardiopulmonary exercise testing CPX is not well understood these patients, which was aim this...

10.1111/cpf.12197 article EN Clinical Physiology and Functional Imaging 2014-10-13

INTRODUÇÃO: Muitos trabalhos têm estudado o comportamento hormonal nos exercício resistido, entretanto poucos relacionam os hormônios cortisol, GH e insulina. OBJETIVO: Estudar ajustes das concentrações plasmáticas dos insulina em exercícios resistidos de mesma intensidade com relação à massas musculares distintas. MÉTODOS: Dez voluntários, 20,3 ± 4,2 anos, 74,1 10,2 kg peso, 177,2 4,6 cm estatura 23,8 3,2 kg/m2 IMC, realizaram uma sessão leg press (LP) supino reto (SR) quatro séries 10...

10.1590/s1517-86922014000100004 article PT Revista Brasileira de Medicina do Esporte 2014-01-01

A hyperbolic function as well a linear relationship between power output and time to exhaustion (Tlim) has been consistently observed during dynamic non-resistive exercises. However, little is known about its concept resistance exercises (RE), which could be defined critical load (CL). This study aimed verify the existence of CL RE number workbouts necessary determine optimal modeling achieve it.Fifteen healthy men (23±2.5 yrs) completed 1 repetition maximum test (1RM) on leg press 3 (60%,...

10.23736/s0022-4707.16.06169-7 article EN The Journal of Sports Medicine and Physical Fitness 2017-03-01

The objective of this study was to assess cardiovascular, respiratory, and metabolic responses during a commonly used dynamic leg press resistance exercise until exhaustion (TEx) at different intensities compare with critical load (CL). This prospective, cross-sectional, controlled, crossover study. Twelve healthy young men (23±2.5 years old) participated. subjects carried out three bouts in percentages 1 repetition maximum (60, 75, 90% 1RM) TEx. CL obtained by means hyperbolic model...

10.1590/1414-431x20187837 article EN cc-by Brazilian Journal of Medical and Biological Research 2018-01-01

The position of lower limbs during lunge is different from squat without clear understanding on differences in muscle activation. objective was to compare the electromyographic activity vastus lateralis (VL), medialis (VM), biceps femoris (BF) and semitendinosus (ST) execution exhaustion limb, changing legs frontally posteriorly. Nine active women participated this study with a mean (SD) age 22 (3.4) years body mass 60.3 (4.1) kg. divided two phases, forward leg (random order). signals were...

10.5007/1980-0037.2012v14n1p83 article EN cc-by Brazilian Journal of Kinanthropometry and Human Performance 2012-01-02

Materials and methods We evaluated 49 patients (51.2±7.7 yrs.) with a confirmed diagnosis of diabetes. The subjects were randomized in two groups according to glycated hemoglobin-HbA1c: HbA1c 7%. fasting plasma glucose performed specialized laboratory HR iRR recorded for 10 min the supine position. Statistical analysis included Shapiro-Wilk Test, Mann Whitney Test Spearman Correlation.

10.1186/1758-5996-7-s1-a3 article EN cc-by Diabetology & Metabolic Syndrome 2015-11-11

The cardiac autonomic modulation and exercise capacity, which are strong predictors of cardiovascular overall mortality, reduced in type 2 diabetes (T2DM) hypertension. New indices from non-linear modeling have been recently proposed as a method to describe the complexity heart rate (HR) dynamics. Variables cardiopulmonary test (CPET), circulatory power (CP), ventilatory (VP), oxygen uptake efficiency slope (OUES) used important markers limitation. However, whether coexistence T2DM systemic...

10.1249/01.mss.0000487733.70260.a3 article EN Medicine & Science in Sports & Exercise 2016-05-01

PURPOSE: To evaluate the effect of heart rate variability (HRV) on discontinuous exercise test leg press 45° (DET-L) and testing cycle ergometer (DET-C) before after RT program 8 weeks in CAD patients. METHODS: Twenty male patients were randomized to a training group (TG; 61.3±5.2 years) control (CG; 61±4.4 years). R-R intervals collected during DET-L until maximum sustained load (MSL) 20 contractions lower limbs DET-C for 3 minutes, 45°. HRV indices (RMSSD, SD1, SDNN) calculated stable...

10.1249/01.mss.0000478557.57916.1b article EN Medicine & Science in Sports & Exercise 2015-05-01

The aging process can determine changes such as reduced functional capacity and altered cardiac autonomic modulation (CAM); resistance exercise (RE) may have an important role in mitigating these effects RT at “critical load” (CL) intensity is progressively gaining attention prescription innovative, promising training strategy. PURPOSE: purpose of this study was to test the hypothesis that elderly young subjects present different CAM behavior during RE performed CL. METHODS: 10 (25.2±4.17...

10.1249/01.mss.0000485789.99023.a2 article EN Medicine & Science in Sports & Exercise 2016-05-01

<b>Background:</b> New indices such as cardiopulmonary (CP) and ventilator power (VP) have been proposed important markers of exercise limitation (1). Concurrent aerobic resistance training (CART) widely recommended in diabetic patients (2). However, no study has evaluated if these can be beneficially modulated by CART programs with type 2 diabetes mellitus (T2DM). <b>Objective:</b> To evaluate the effects on CP VP maximal T2DM. <b>Materials Methods:</b> We 41 (50.8±7 years) T2DM randomized...

10.1183/13993003.congress-2016.pa2271 article EN 2016-09-01
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