Alex Silva Ribeiro

Alex Silva Ribeiro
University of Northern Parana · Center for Biological and Health Sciences (CCBS)

PhD

About

135
Publications
208,003
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1,640
Citations
Additional affiliations
March 2016 - April 2016
Universidade Estadual de Londrina
Position
  • Post doc student

Publications

Publications (135)
Article
Full-text available
A flexibilidade é uma capacidade física de suma importância para a qualidade de vida dos indivíduos haja vista que inúmeros trabalhos comprovaram melhora na postura, redução nos níveis de lesões tanto nas atividades diárias como esportivas, entre outros. O treinamento com peso (TP) melhora o desempenho das atividades físicas o que é fundamental par...
Article
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Although one-repetition maximum (1RM) and lean soft tissue (LST) are the most common measures to assess muscular strength and skeletal muscle mass in older adults, reference data is still missing. There-fore, the present study aimed to produce reference values for the 1RM tests and LST in physically inde-pendent older women. Furthermore, the effect...
Article
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Aims The main purpose of the present study was to investigate the acute effects of different resistance training loads on the session rating of perceived exertion (sRPE) and feelings of pleasure/displeasure (sFPD) of the session in older women. Method In a randomized, counterbalanced, and cross-over design, 16 older women (66.1 ± 3.9 years, 67.0 ±...
Article
Objectives: A single session of high-intensity exercise promotes exaggerated increases in sympathetic cardiac activity, which may increase the risk of acute cardiovascular events. However, it is not clear if similar responses occur after an FT session. Thus, this study aimed to (1) analyze the acute autonomic responses to a single FT session in hea...
Article
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We read with interest the meta-analytic review of Pallarés et al. (doi: 10.1111/sms.14006), which assessed the effects of full vs. partial range of motion (fROM vs. pROM) resistance training interventions on neuromuscular, functional, and structural adaptations. We congratulate the authors on a comprehensive review of current data on a topic that h...
Article
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The present study analyzed the effects from day-before to day-of bodybuilding competition on intracellular water (ICW), extracellular water (ECW), total body water (TBW), and bioimpedance analysis (BIA) parameters (resistance, R; reactance, Xc; and derived scores) in bodybuilding athletes. We assessed anthropometry and BIA (foot-to-hand; tetrapolar...
Article
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Fitness professionals routinely employ a variety of resistance training exercises in program design as a strategy to enhance muscular adaptations. However, it remains uncertain whether such an approach offers advantages over a fixed-exercise selection. The objective of this paper was to review the effects of exercise variation on muscle hypertrophy...
Article
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The squat is one of the most widely used exercises in resistance-training programs. The aim of the present narrative review was to analyze the effect of the squat on lower-limb muscle hypertrophy. Briefly, the available literature indicates that the squat is an effective exercise for inducing hypertrophy of the quadriceps, mainly the vastii, but al...
Article
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The present study compared strength responses between preferred (PREF) and non-preferred (N-PREF) legs in older women. Muscular strength was measured unilaterally using an isokinetic dynamometer and was analyzed for reproducibility scores, acute performance, and responsiveness to a resistance training (RT) program. One hundred and eleven women (≥60...
Article
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Purpose: Resistance training combined with appropriate dietary intake can promote a concomitant increase in skeletal muscle mass (SMM) and reduction in fat mass, a condition termed body recomposition. This study's primary purpose was to explore the effects of protein ingestion on body recomposition following 24 weeks of resistance training (RT) in...
Article
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The purpose of this study was to investigate the effects of supplementation of whey protein (WP) versus leucine-matched collagen peptides (CP) on muscle thickness (MT) and performance after a resistance training (RT) program in young adults. Twenty-two healthy untrained participants were randomly assigned to either a WP (n = 11) or leucine-matched...
Article
O equilíbrio postural sofre alterações fisiológicas devido à idade, diminuindo a capacidade de se equilibrar na posição ortostática e/ou em um movimento dinâmico. O objetivo do presente estudo foi verificar se a dorsiflexão tem influência e se correlaciona com diferentes avaliações de equilíbrio postural em mulheres idosas. Um total de 54 mulheres...
Article
BACKGROUND: We aimed to analyze the impact of previous resistance training (RT) experience on cognitive function in older women. METHODS: Sixty-one physically independent women (> 60 years) were assigned to one of the three groups: novice (n = 21, untrained individuals with no RT experience or who had not trained for several months), intermediate (...
Article
The induced adaptations from resistance training are dependent on the adequate manipulation of the variables involved in training, and volume is one of the most important. However, high volume training can be more stressful, thus prior information of the training volume to be performed may affect performance. The aim of this study is to verify the...
Article
Objectives Photobiomodulation (PBM) with light-emitting diode therapy (LEDT) are among the most common strategy for improving performance and recovery from physical exercise in young adults. However, its effectiveness in resistance-trained women remains contradictory. The purpose of this study was to investigate the effects of light-emitting diode...
Article
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The aim of the present study was to investigate the influence of intensity of load and cuff pressure on training volume and myoelectric activation during the knee extension exercise executed with and without blood flow restriction (BFR) to failure. Ten young men (22 ± 2 y), with at least six months of training experience, visited the laboratory on...
Article
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Cessation of resistance training could result in loss of the gains acquired. Therefore, the aim of the current study was to verify the effect of 1-year of detraining following resistance training on body composition, functional capacity, handgrip strength, localized muscular endurance, and countermovement jump performance (CMJ) in older adults. Fif...
Article
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Calculating resistance-training volume in programs focused on muscle hypertrophy is an attempt to quantify the external workload carried out, then to estimate the dose of stimulus imposed on targeted muscles. The volume is usually expressed in some variables that directly affected the total training work, such as the number of sets, repetitions, an...
Article
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Objective This study aims to investigate the effects of laser photobiomodulation (PBM) at 808 nm on biceps brachii performance to exhaustion, rating of perceived exertion (RPE), and delayed onset muscle soreness (DOMS) in untrained young women. Methods Thirteen young women (20.1 ± 2.9 years) participated in a crossover study in which they received...
Article
Background and purpose: Physical and therapeutic strategies to maintain and rehabilitate skeletal muscle mass, strength, and postural balance are clinically relevant to improve the health, well-being, and quality of life of older adults. The purpose of this study was to investigate the effects of photobiomodulation (PBM)/laser therapy combined wit...
Article
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We compared the effects of different resistance training (RT) volume reduction strategies on muscular strength and lean soft-tissue (LST) in older women. Fifty seven physically independent women (> 60 years) performed a 20-week pre-conditioning phase of a standardized whole-body RT program (eight exercises, three sets, 8-12 repetitions, three sessi...
Article
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The objectives of this paper were to: (a) systematically review studies that explored the effects of exercise order (EO) on muscular strength and/or hypertrophy; (b) pool their results using a meta-analysis; and (c) provide recommendations for the prescription of EO in resistance training (RT) programmes. A literature search was performed in four d...
Article
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An individual’s training status is a key factor used to determine the volume, the intensity, and the selection of exercises for resistance training pre- scription. Interestingly, there are no objective parameters to assess train- ing status, so there is ambiguity in determining the appropriate volume and other resistance training variables in this...
Article
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This study aimed to investigate the effects of free leucine supplementation on muscle recovery from resistance exercise (RE) in young adults. Fourteen untrained subjects (23.9 ± 3.6 years old) underwent RE sessions (leg press and hack squat; 3 sets of 8-12 reps at 70% 1RM) supplemented with leucine (LEU; 2 daily doses of 3 g) or placebo (PLA), sepa...
Article
Manipulation of resistance training variables has been shown to have a substantial effect on muscular adaptations. A major variable in this process is exercise selection. In addition to the effectiveness of a given exercise to recruit the target muscle groups, safety considerations and individual comfort during execution of a lift should be conside...
Article
Specialized resistance training techniques (e.g., drop-set, rest-pause) are commonly used by well-trained subjects for maximizing muscle hypertrophy. Most of these techniques were designed to allow a greater training volume (i.e., total repetitions x load), due to the supposition that it elicits greater muscle mass gains. However, many studies that...
Article
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The aims of this study were: (i) to analyze the relationship between the performance of different measures of muscular strength, and (ii) to identify which measurements present a greater relationship with an overall strength score. Sixty older women (aged 69 ± 6 years) were submitted to muscular strength measurements from isotonic, isokinetic, and...
Article
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This study analyzed the effects of the pyramidal resistance training (RT) system with two repetition zones on cardiovascular risk factors in older women (≥ 60 years old). Fifty-nine older women were randomly assigned in three groups: non-exercise control (CON, n = 19), narrow-pyramid system (NPR, n = 20), and wide-pyramid system (WPR, n = 20). Trai...
Article
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Bioelectrical impedance vector analysis (BIVA) and phase angle (PhA) have been widely used to monitor changes in health-related parameters in older adults, while resistance training (RT) is one of the potential strategies to mitigate the adverse effects of aging. The purpose of this study was to compare the effects of the crescent-pyramid RT system...
Article
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Muscular strength and hypertrophy following resistance training may be obtained in different degrees depending on the approach performed. This study was designed to compare the responses of the biceps brachii to two preacher curl exercises, one performed on a cable-pulley system (CAB; in which a greater torque was applied during the exercise when e...
Article
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The main purpose of this study was to assess the effects of resistance training (RT) frequency following a retraining period on muscular strength, body composition, and metabolic biomarkers after a detraining period in older women. Fourty older women ( 60 yrs) were randomly assigned to two groups that perform RT two or three times per week during...
Article
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Objective: This study aimed to investigate the acute effects of laser PBM (λ: 808 nm) therapy on muscle performance and perceived exertion in physically active elderly women. Methods: Seventeen physically active elderly women (72.6 ± 4.1 y) participated in a crossover study in which they received active or placebo laser therapy on the rectus femori...
Article
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We aimed to compare the effects of creatine (Cr) supplementation combined resistance training (RT) on skeletal muscle mass (SMM), total body water (TBW), intracellular water (ICW), and extracellular water (ECW) in resistance-trained men, as well as determining whether the SMM/ICW ratio changes in response to the use of this ergogenic aid. Twenty-se...
Article
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This study aimed to compare the effects of resistance training performed with low versus moderate loads on systemic resting blood pressure (BP) in older women. A total of 29 women (72.6 ± 5.1 years) were randomized into two groups: low load (LOW, n = 15) and moderate load (MOD, n = 14). An 8-week whole-body resistance training program was carried o...
Article
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Resistance training has been widely recommended as a strategy to enhance the functional autonomy and quality of life in older individuals. Among the variables that comprise a training session, the selection of exercises stands out as an important consideration for the elderly. Although a wide range of resistance exercise options exists, current gui...
Article
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The purpose of the present study was to compare the effects of three resistance exercise orders on muscular strength, body composition, and functional fitness in trained older women. Forty-five women (aged ≥ 60 years), after performing 12 weeks of a pre-conditioning resistance-training program were randomly assigned in one of the following groups t...
Article
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Background: Many factors may influence the magnitude of individual responses to resistance training (RT). How the manipulation of training volume and/or frequency affects responsiveness level for muscle mass gain in older women has not been investigated. Aims: This study had the objective of identifying responders (RP) and non-responders (N-RP) old...
Article
The purpose of this study was to investigate the effects of resistance training (RT) performed using low vs. moderate loads on muscular strength, muscle mass, and muscle quality index (MQI) in older women. Twenty-seven older women (71.5 ± 5 years, 65.2 ± 11 kg, 154.2 ± 5 cm, 27.4 ± 4 kg.m-2) were randomized into two groups: one that performed RT wi...
Article
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The present study aimed to evaluate the influence of holding the chair handles during the assessment of older women’s knee flexion and extension isokinetic and isometric strength. Of 57 older women (≥ 60 years) selected from a convenience sample for this research, 23 were randomly chosen to perform the tests twice for reproducibility analyses. Each...
Article
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The purpose of the present study was to investigate the effects of resistance training (RT) performed with a higher versus lower training volume on oxidative stress (OS) biomarkers in older women. Thirty-eight older women (≥ 60 years) were randomly assigned to one of two groups: a group that performed one set per exercise (LV, n = 18), or 3 sets pe...
Article
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Stretch training is widely used in a variety of fitness-related capacities such as increasing joint range of motion, preventing contractures, and alleviating injuries. Moreover, some researches indicate that stretch training may induce muscle hypertrophy; however, studies on the topic have been primarily relegated to animal and in vitro models. The...
Article
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BACKGROUND: The purpose of this study was to compare the effects of a 24-week resistance-training (RT) program performed 2 vs. 3 times per week on body fat and metabolic health markers in older women. METHODS: Thirty-nine women (≥60 years old) were randomly assigned to two groups according to RT frequency (G2x = two sessions per week, n=19; and G3x...
Article
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The purpose of the study was to verify the effect of two dispositions of resistance exercises on rate of perceived of effort (RPE), discomfort and affectivity in older women. Twenty older women (68.0±6.6 years, 69.8±12.7 kg, and 155.9±7.0 cm) performed in a balanced and randomized design two experimental conditions, namely: a circuit (CIRC) fashion...
Article
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The aim of this study was to compare the acute effects of four resistance-training (RT) exercise orders on rate of perceived exertion (RPE) and RT variables with exercise load properly adjusted according to its position within the sequence in older women. That is, the load was adjusted so that it was possible that the sets were performed within the...
Article
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Bodybuilding is an aesthetic sport whereby competitors aspire to achieve a combination of high levels of muscularity combined with low levels of body fat. Protein is an important macronutrient for promoting muscle growth, and meeting daily needs is necessary to optimize the accretion of lean mass. Current recommendations for muscle hypertrophy sugg...
Article
Resistance exercise has been widely recommended for elderly population, since this type of exercise induces important health benefits, especially to improve functional capacity and preserve muscle mass, thus reflecting on the quality of life of older individuals. Among the several components of the resistance exercises the selection of movements to...
Article
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The purpose of this study was to investigate the effects of BCAA supplementation on muscle recovery from resistance exercise (RE) in untrained young adults. Twenty-four young adults (24.0 ± 4.3 years old) were assigned to 1 of 2 groups (n = 12 per group): a placebo-supplement group or a BCAA-supplement group. The groups were supplemented for a peri...
Article
The main purpose of the present study was to investigate the acute effects of different training loads on ratings of perceived exertion and discomfort and feelings of pleasure/displeasure in resistance-trained men. Twelve resistance-trained men (26.7 ± 3.5 years, 85.1 ± 17.5 kg, and 174. 9 ± 9.9 cm) performed 3 sets of the bench press, squat on a h...
Book
A hipertrofia muscular é um dos principais objetivos de praticantes de treinamento resistido. As respostas induzidas pelo treinamento resistido são dependentes da adequada manipulação das variáveis que compõe a prescrição do treino. Nesse sentido, este livro irá abordar as principais variáveis apresentando suas aplicações práticas fundamentadas por...
Article
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β-alanine supplementation has been shown to increase muscle carnosine levels and exercise performance. However, its effects on muscle recovery from resistance exercise (RE) remains unknown. The purpose of this study was to investigate the effects of β-alanine supplementation on muscle function during recovery from a single session of high-intensity...
Article
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The purpose of this study was to analyze the effects of 24 weeks of resistance training (RT) performed 2 vs. 3 times per week on muscle strength, muscle mass, and muscle quality in older women. Thirty-nine older women (≥ 60 years old) were randomly assigned to two groups according to RT frequency (G2x = two sessions per week, n=19; and G3x = three...
Article
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The aim of this study was to compare the effects of linear periodization (LP) versus nonperiodized (NP) resistance training on upper-body isometric force and skeletal muscle mass (SMM) in sarcopenic older adults. Twenty sarcopenic older adults were randomly assigned into the LP and NP groups and performed 16 weeks of resistance training. The SMM wa...
Article
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The purpose of the present study was to analyze the effects of resistance-training (RT) exercise order on muscle strength, hypertrophy, and anabolic hormones in older women. Forty-four older women were randomly assigned to one of three groups: a non-exercise control group (CON, n=15) and two RT groups that performed a 12-weeks RT program in a multi...
Article
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The purpose of this study was to determine the effects of different amounts of energy intake in combination with progressive resistance training on muscle mass and body fat in bodybuilders. Eleven male bodybuilders (26.8 ± 2.3 years, 90.1 ± 9.7 kg, and 176.9 ± 7.1 cm) were randomly assigned into one of two groups: a group that ingested higher amoun...
Article
The purpose of this study was to analyze the effect of a single-set RT program on CVDrisk parameters in untrained older women. Forty-eight older women (> 60 years) were randomly assigned to two groups. The training group (SS) performed a 12-week RT program comprised of single sets (10-15 repetitions) in 8 exercises performed 3 times per week. The c...
Article
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The aim of this study was to analyze the association between muscle quality index (MQI) and phase angle (PhA) after a program of progressive resistance training (RT) in older women. Sixty-six older women with previous RT experience (68.8 ± 4.6 years, 156.6 ± 5.3 cm, 66.0 ± 13.0 kg, 26.7 ± 4.6 kg/m²) underwent 12 weeks of RT (3 x/week, 8 exercises,...
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To analyze the impact of running in different relative humidity (RH) (normal RH (53%); very high RH (94%)), on hydration status (HS), sweating rate (SR), heart rate (HR), and rating of perceived exertion (RPE). Fourteen men (25.2 years) performed two sessions of running on treadmill. Body mass (normal RH: -1.35%, very high RH: -1.65%), and HS reduc...
Article
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The purpose of the present study was to analyze the effects of the order of resistance training (RT) exercises on hypertrophy in young adult men. Thirty-six young adult men (21.9 ± 2.5 years, 72.6 ± 12.1 kg, 176.9 ± 7.4 cm, 23.1 ± 3.3 kg/m²) were randomly assigned to one of two training groups that performed a 6-week RT program in either a traditio...
Article
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The pre-exhaustion (PE) system in resistance training is largely used by athletes and practitioners with the goal of enhancing muscular adaptations. PE consists of performing a single-joint exercise prior to a multiple-joint exercise in an effort to increase the overload (muscle activation and/or training volume) in a given muscle. Different PE app...
Article
Overweight among older adults has increased considerably, and resistance training (RT) is a very attractive intervention strategy for positive changes associated with its practice. The aim was to evaluate the impact of nutritional status on body composition and muscle strength of older women in a RT program. Forty-eight older women were divided int...
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Aims: The purpose of this study was to examine the effects of training volume (1 vs. 3 sets) on lower-body muscle strength in untrained young men. Methodsː Eighteen untrained young men were recruited and their legs were trained with 1 or 3 sets (in a contralateral design) for 6 weeks, using a knee extension machine. Isokinetic peak torque and one r...
Article
Objective: To analyse the effect of resistance training (RT) frequency on muscle mass, appendicular lean soft tissue, insulin-like growth factor 1 (IGF-1), testosterone, and their changes with detraining in older women. Methods: Forty-five physically independent older women (≥ 60 years) were randomly assigned to perform RT either two (G2X, n = 2...
Article
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The purpose of the present study was to investigate the effect of whey protein supplementation on muscular strength, hypertrophy, and muscular quality in older women pre-conditioned to resistance training (RT). In a randomized, double-blind and placebo-controlled design, 31 older women (67.4 ± 4.0 years, 62.0 ± 6.9 kg, 155.9 ± 5.7 cm, 25.5 ± 2.4 kg...
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Background: Phase angle (PhA) is a viable indicator of cellular health, with higher values reflecting better cellularity, cell membrane integrity, and cell function. Adaptive responses to resistance training (RT) on PhA may be important in obese older people Aims: The main purpose of the present study was to investigate the effects of 8 weeks of re...
Article
This study aimed to analyze the effects of a pyramid system performed with two repetition zones on muscular strength and skeletal muscle mass (SMM) in older women. Thirty-nine physically independent older women (67.8 ± 5.4 years) were randomly assigned into one of two of groups that performed an 8-week resistance training program in an ascending pyr...
Article
The main purpose of this study was to investigate the effects of 12 weeks of resistance training (RT) on Phase Angle (PhA), inflammatory and oxidative stress biomarkers, and to evaluate whether these RT‐induced adaptations are related to PhA changes. Fifty‐one older women (70.6±5.1 years; 26.9±4.2 kg/m²) were randomly allocated into: a training gro...