Rhaí André Arriel

Federal University of Juiz de Fora

The findings of the ischemic preconditioning (IPC) on exercise performance are mixed regarding types of exercise, protocols and participants' training status. Additionally, studies comparing IPC with sham (i.e., low-pressure cuff) and/or control (i.e., no cuff) interventions are contentious. While studies comparing IPC versus a control group genera...

Mountain biking (MTB) is a cycling modality performed on a variety of unpaved terrain. Although the cross-country Olympic race is the most popular cross-country (XC) format, other XC events have gained increased attention. XC-MTB has repeatedly modified its rules and race format. Moreover, bikes have been modified throughout the years in order to i...

Aim: To verify the response of tissue saturation index (TSI) during ischemia-reperfusion (IR) interventions with different cuff-pressures. Methods: Twenty-nine healthy men experienced in resistance training were recruited. Each one has undergone a control condition (no cuff) and one of the three IR interventions: 1) 190 mmHg (CP-190, 22.7 ± 3.0 yea...

The outbreak of the new Coronavirus and the sudden lockdown promoted alternative approaches for health care procedures, such as telemedicine and telerehabilitation appointments. The establishment of social distancing as the "new normal" and use of technologies became necessary for remote online activities (i.e., school, work, leisure and shopping)....

Background: Chronic diseases are the leading causes of death and disability in older women. Physical exercise training programs promote beneficial effects for health and quality of life. However, exercise interruption periods may be detrimental for the hemodynamic and lipidic profiles of hypertensive older women with dyslipidemia. Methods: Ninet...

We analyzed the effects of wearing blue lenses on melatonin level, physical and cognitive performance. Fifteen youth volleyball players (15.0±1.5 yrs) attended the laboratory on 3 occasions (48-h interval): on the 1st visit they were familiarized with the procedures of the study, and on 2nd and 3rd visits they were submitted to the testing protocol...

Instagram (IG) reaches millions of people, sharing personal content and all kinds of information, including those related to exercise and health. However, the scientific quality of the posted information is questionable. Thus, this study aimed to analyze whether exercise and health information posted by popular Brazilian IG influencers has technica...

Background: Physical inactivity is a primary cause of most chronic diseases. In addition, the negative effects of aging, physical inactivity and dyslipidemia are risk factors for cardiovascular diseases of older women. Exercise is considered fundamental for the treatment and prevention due to the benefits in the health of this population, but detr...

Paes ST, Scapim SN, Arriel RA, Meireles A, Marocolo M. Main Source of Information Regarding Physical Activity Among Physically Active Brazilian People. JEPonline 2021;24(5):23-28. This study investigated the main sources of information that people who exercise outdoors use to learn about physical activity (PA). The study sample consisted of 418 phy...

RESUMO: O pré-condicionamento isquêmico [do termo em inglês ischemic preconditioning (IPC)] é uma estratégia caracterizada por breves ciclos de restrição do fluxo sanguíneo seguidos de reperfusão, realizados nos membros superiores ou inferiores com o objetivo de melhorar o desempenho físico. Essa intervenção tem chamado atenção devido a sua caracte...

Background Following the COVID-19 pandemic (caused by the SARS-CoV-2 coronavirus) at the beginning of 2020, containment measures have been taken by different countries around the globe. Citizens were forced to stay in quarantine, affecting their food consumption habits and food sector. These impacts have not yet been properly understood. Thus, it i...

Background: Sedentarism and inactivity are risk factors for the development of hypertension. Thus, the prevention of the natural process of biological and physiological aging of older women through physical exercise results in higher benefits in preventing cardiovascular diseases and can be a key factor for its treatment. Multicomponent exercise (...

Although in recent years, crosscountry short track (XCC) mountain biking became more popular among athletes and coaches, no study has analyzed the main determinants of performance in this modality. Thus, this study investigates performance and pacing pro le of professional crosscountry cyclists on different technical sections during a XCC competiti...

This study examined the effects of a simultaneous ischemic preconditioning (IPC) and SHAM intervention to reduce the placebo effect due to a priori expectation on the performance of knee extension resistance exercise. Nine moderately trained men were tested in three different occasions. Following the baseline tests, subjects performed a first set o...

This study is an extension of a previously research about cheese consumer behavior assessed by diaries (Rodrigues et al. 2020). It comprises an investigation of Diary (performed at home by consumers) and CATA (a traditional sensory method performed at lab) tools assessing Canastra cheese, to compare the results and information obtained from both se...

Instagram (IG) reaches millions of people, sharing personal content, and also all kinds of information, including those related to exercise and health. However, scientific quality of the posted information is questionable. Thus, this study aimed at analyzing whether exercise and health information posted by main IG Brazilian influencers have techni...

RESUMO: O mountain biking (MTB) é um esporte tradicional e difundido em todo o mundo e, devido às suas exigências técnicas e físicas, a utilização de métodos de monitoramento e quantificação da carga interna na rotina de treinamentos torna-se essencial para evitar lesões e maximizar o desempenho em competições. Existem divergências entre os treinad...

The diary method has been used in some areas of knowledge, being uncommon in the area of sensory analysis of food. In addition, given the expanding market and the added value of Canastra artisanal Minas cheese, it is important to study consumer behavior, as well as understand the consumption habits of the product. Thus, the objective of this study...

Abstract: It has been demonstrated that brief cycles of ischemia followed by reperfusion (IR) applied before exercise can improve performance and, IR intervention, applied immediately after exercise (post-exercise ischemic conditioning—PEIC) exerts a potential ergogenic effect to accelerate recovery. Thus, the purpose of this systematic review with...

It has been demonstrated that brief cycles of ischemia followed by reperfusion (IR) applied before exercise can improve performance and, IR intervention, applied immediately after exercise (post-exercise ischemic conditioning – PEIC) exerts a potential ergogenic effect to accelerate recovery. Thus, the purpose of this systematic review with meta-an...

We read with interest the recent Viewpoint by Ferrandi, Alway, and Mohamed (1) on the interaction between SARS-CoV-2 and ACE2 with skeletal muscle, and although several relevant points were raised, we would like to present some elements to enrich the debate. Pathologies that affect directly the skeletal muscle (e.g., Duchenne muscular dystrophy) or...

Rules determine how team sport matches occur. Match-induced fatigue is specific to each sport, and may be associated with injury incidence. For example, the injury rate in soccer is distinctly higher during matches than in training sessions. Understanding the differences between team sports rules might be useful for enhancing rules (e.g., safer spo...

Blood flow restriction (BFR) can be used during resistance training (RT) through pressure application with pneumatic (pressurized) cuffs (PC) or non-pneumatic (practical) cuffs (NPC). However, PC are expensive and difficult to use in the gym environment compared to NPC. The main aim was to compare, correlate, and verify the hormonal and metabolic r...

Aims: To evaluate whether body mass (BM) and body composition may influence mountain bike cycling performance. Methods: Forty male amateur mountain bikers attended the laboratory on two non-consecutive days. At the first visit, anthropometric measures (height, BM, body fat [BF], fat-free mass [FFM] and body mass index [BMI]) and familiarization to...

Background: Previous studies have assessed the effects of ischemic preconditioning (IPC) on exercise performance and physiological variables, such as lactate and muscle deoxygenation. In this study, we verified the IPC effects on heart rate and performance during and immediately after a maximal incremental cycling test. Methods: Eighteen recreat...

The assessment of neuromuscular fatigue is important for minimizing the risks of nonfunctional overreaching, and monitoring training loads has rapidly grown in recent years. The objective of the study was to compare the acute upper body performance and rating of perceived exertion (RPE) responses to high-volume (HV) and high-intensity (HI) resistan...

Aims: To evaluate whether body mass (BM) and body composition may influence mountain bike cycling performance. Methods: Forty male amateur mountain bikers attended the laboratory on two non-consecutive days. At the first visit, anthropometric measures (height, BM, body fat [BF], fat-free mass [FFM] and body mass index [BMI]) and familiarization to...

Introduction: Regular practice of resistance training offer positive results on muscular and physical performance. Thus, some strategies have been developed to influence the increase of performance results. Therefore, the objective of this study was to verify the influence of music, placebo supplementation and biofeedback on the number of execution...

Anxiety is the main emotion, which influences life quality and competitive performance. The purpose of this study was to evaluate anxiety levels on different training phases during a semester season and to analyze the relation between anxiety and athletic training of adolescent swimmers. Twenty swimmers were included, 13 men with an average age of...

de Souza, HLR, Arriel, RA, Hohl, R, da Mota, GR, and Marocolo, M. Is ischemic preconditioning intervention occlusion-dependent to enhance resistance exercise performance? J Strength Cond Res XX(X): 000-000, 2019-Ischemic preconditioning is a rising technique with potential to improve performance. Currently, its effects are still controversial, and...

Aims: To investigate the early and late ischemic preconditioning (IPC) effect on the trained cyclists’ performance during incremental cycling test until exhaustion. Methods: Twenty-one male cyclists allocated to an IPC (2 x 5-min of blood flow occlusion at 50 mm Hg above systolic pressure followed + 5-min of deflation), SHAM (2 x 5-min at 20 mm Hg)...

Brief moments of blood flow occlusion followed by reperfusion may promote enhancements in exercise performance. Thus, this study assessed the 24-h effect of post-exercise ischemic conditioning (PEIC) on exercise performance and physiological variables in trained cyclists. In a randomized, single-blind study, 28 trained cyclists (27.1 ± 1.4 years) p...

INTRODUTION: Brief moments of blood flow occlusion followed by reperfusion cause hyperemia (1), and this may raises delivery of glucose and oxygen supply to muscles favouring glycogen, ATP and PCr re-synthesis (2) post-exercise. Beyond this, the maneuver inhibited reactive oxygen species (ROS) (3) and creatine kinase (CK) (4) production. Thus, this...

Introdução: O pré-condicionamento isquêmico [do termo em inglês ischemic preconditioning (IPC)] é caracterizado por breves momentos de oclusão vascular seguido por reperfusão. Embora concebido na área clínica, quando inserido na área esportiva, o IPC mostrou efeitos positivos sobre o desempenho físico. Entretanto, a influência no desempenho do exer...

Introduction: For a precise prescription of training loads, it is important that the perceived exertion (RPE) between coach and athlete are in agreement. Thus, the aim of this study was to verify the association between the RPE of the session (SRPE) perceived by coach and athlete for the daily monitoring of training loads in young athletes during t...

The dehydration (body mass loss) induced by exercise may lead to a decrease in sports performance, and this effect may be greater in young people than in adults. The purpose of this study was to analyze the psychophysiological responses of young and adult athletes during long-distance running. We investigated the degree of dehydration, heart rate b...

Abstract: The strength training can be used in order to improve neuromuscular function, adaptations can be observed in the maximal strength, recognized by the medical and scientific communities it´s as key to promoting health and improving quality of life. Objectives: Check the relationship between dynamic and isometric strength in the bench press...