Julio Camargo
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Julio Camargo has a total of 31 co-authors. Here are the top co-authors by number of shared publications:
- Verônica Bender Haydu
Universidade Estadual de Londrina
4 shared publications - Cleiton Augusto Libardi
Federal University of Sao Carlos (UFSCar)
2 shared publications - Deivid Gomes Silva
MUSCULAB – Laboratory of Neuromuscular Adaptations to Resistance Training, Department of Physical Education, Federal University of São Carlos (UFSCar), São Carlos, SP, BRAZIL
2 shared publications - Diego Bittencourt
Federal University of Sao Carlos (UFSCar)
2 shared publications - J. Max Michel
Auburn University
2 shared publications - Joao Guilherme Almeida Bergamasco
Federal University of Sao Carlos (UFSCar)
2 shared publications
Latest Publications
- Open Access
Large increases in resistance training volume do not impair skeletal muscle hypertrophy or anabolic–catabolic molecular signalling in trained individuals
Skeletal muscle hypertrophy results from the integrated regulation of anabolic and proteolytic processes in response to mechanical loading. Although increases in resistance training (RT) volume are used to increase mechanical stress, it remains uncertain whether large and abrupt volume progressions could exceed muscle adaptive capacity by disrupting the balance between anabolic and catabolic signaling. The present study investigated whether a large increase in weekly RT volume (+120%) leads to impaired hypertrophic outcomes and intracellular regulatory responses compared with a modest increase (+20%). Twenty-five resistance-trained men and women (18–35 years old) completed an 8-week randomized, single-blind, within-subject unilateral intervention. Each participant trained both legs twice weekly, with one leg assigned to the large (VOL120) and the contralateral leg to the modest (VOL20) weekly volume progressions relative to habitual training volume. Vastus lateralis muscle cross-sectional area (mCSA) was assessed by ultrasonography before and after training. Muscle biopsies were obtained at baseline, post-intervention, and 24 h after the last session to quantify muscle fiber cross-sectional area (fCSA), satellite cell myonuclear content, and anabolic/catabolic signaling markers. Both protocols induced increases in mCSA over time ( p <0.001), with no protocol vs. time interaction. No significant effects were observed for fCSA nor satellite cell number or myonuclear content. Additionally, molecular responses related to translational regulation and protein degradation were largely similar between protocols. Collectively, these data indicate that a large, abrupt increase in weekly set volume does not impair hypertrophic adaptations or meaningfully alter the anabolic–catabolic signaling profile in resistance-trained individuals.
Open AccessLarge increases in resistance training volume do not impair skeletal muscle hypertrophy or anabolic–catabolic molecular signalling in trained individuals
Skeletal muscle hypertrophy results from the integrated regulation of anabolic and proteolytic processes in response to mechanical loading. Although increases in resistance training (RT) volume are used to increase mechanical stress, it remains uncertain whether large and abrupt volume progressions could exceed muscle adaptive capacity by disrupting the balance between anabolic and catabolic signaling. The present study investigated whether a large increase in weekly RT volume (+120%) leads to impaired hypertrophic outcomes and intracellular regulatory responses compared with a modest increase (+20%). Twenty-five resistance-trained men and women (18–35 years old) completed an 8-week randomized, single-blind, within-subject unilateral intervention. Each participant trained both legs twice weekly, with one leg assigned to the large (VOL120) and the contralateral leg to the modest (VOL20) weekly volume progressions relative to habitual training volume. Vastus lateralis muscle cross-sectional area (mCSA) was assessed by ultrasonography before and after training. Muscle biopsies were obtained at baseline, post-intervention, and 24 h after the last session to quantify muscle fiber cross-sectional area (fCSA), satellite cell myonuclear content, and anabolic/catabolic signaling markers. Both protocols induced increases in mCSA over time ( p <0.001), with no protocol vs. time interaction. No significant effects were observed for fCSA nor satellite cell number or myonuclear content. Additionally, molecular responses related to translational regulation and protein degradation were largely similar between protocols. Collectively, these data indicate that a large, abrupt increase in weekly set volume does not impair hypertrophic adaptations or meaningfully alter the anabolic–catabolic signaling profile in resistance-trained individuals.
- Open Access
- 1 September 2025
- Published by Universidad de Guadalajara in ACTA COMPORTAMENTALIA
- Vol. 33 (3) , 410-433
O uso Sustentável de Recursos Comuns no Jogo Keep Fishin’: Uma Replicação Sistemática
A análise de comportamentos de extração de bens comuns e a gamificação tem recebido cada vez mais atenção de analistas do comportamento. Este estudo consistiu em uma replicação sistemática do Experimento 2 de Camargo (2019) visando: avaliar os efeitos de dois tipos de consequências adicionais (ganho de pontos extras e perda de pontos) sobre o comportamento de extração de recursos compartilhados; e avaliar a relação entre o histórico de uso de jogos eletrônicos e de pescarias com o comportamento de extração de recursos compartilhados em um jogo eletrônico que simula pescaria no oceano, o Keep Fishin’. Participaram 50 universitários (16 na Parte 1, 44 na Parte 2), distribuídos em três condições experimentais: Controle, Bônus (pontuação extra) e Multas (perda de pontos). Verificou-se que os participantes das três condições não apresentaram diferença estatisticamente significativa no número estimado de tentativas para concluir o jogo, com uma pequena vantagem para o grupo Bônus na Parte 1 do estudo. Os participantes da Parte 1 do estudo apresentaram maior sensibilidade às contingências, combinando estratégias de captura dos peixes e de soltá-los novamente no oceano. Concluiu-se que o efeito das consequências provavelmente foi mais acentuado na Parte 1 em que havia maior dificuldade para finalizar o jogo.
- 1 September 2025
- Published by Universidad de Guadalajara in ACTA COMPORTAMENTALIA
- Vol. 33 (3) , 410-433
Open AccessO uso Sustentável de Recursos Comuns no Jogo Keep Fishin’: Uma Replicação Sistemática
A análise de comportamentos de extração de bens comuns e a gamificação tem recebido cada vez mais atenção de analistas do comportamento. Este estudo consistiu em uma replicação sistemática do Experimento 2 de Camargo (2019) visando: avaliar os efeitos de dois tipos de consequências adicionais (ganho de pontos extras e perda de pontos) sobre o comportamento de extração de recursos compartilhados; e avaliar a relação entre o histórico de uso de jogos eletrônicos e de pescarias com o comportamento de extração de recursos compartilhados em um jogo eletrônico que simula pescaria no oceano, o Keep Fishin’. Participaram 50 universitários (16 na Parte 1, 44 na Parte 2), distribuídos em três condições experimentais: Controle, Bônus (pontuação extra) e Multas (perda de pontos). Verificou-se que os participantes das três condições não apresentaram diferença estatisticamente significativa no número estimado de tentativas para concluir o jogo, com uma pequena vantagem para o grupo Bônus na Parte 1 do estudo. Os participantes da Parte 1 do estudo apresentaram maior sensibilidade às contingências, combinando estratégias de captura dos peixes e de soltá-los novamente no oceano. Concluiu-se que o efeito das consequências provavelmente foi mais acentuado na Parte 1 em que havia maior dificuldade para finalizar o jogo.
- 29 August 2025
- Published by Springer Nature in European Journal of Applied Physiology
- Vol. 125 (11) , 3065-3081
Is there a volume saturation point for muscle hypertrophy in resistance-trained individuals? A narrative review
Resistance training (RT) volume is recognized as a key variable driving skeletal muscle hypertrophy. Meta-analyses have supported a positive dose–response relationship, with greater volumes resulting in more pronounced hypertrophic adaptations. However, more recent studies conducted in trained individuals have reported conflicting findings, raising the question of whether a saturation point, defined here as a theoretical threshold beyond which additional training volume no longer yields benefits, might exist, or whether the inconsistencies are better explained by methodological limitations and individual variability. In this narrative review, we explore physiological and methodological factors that may explain such discrepancies. Mechanistically, higher RT volumes are associated with greater anabolic signaling, myofibrillar protein synthesis, ribosomal biogenesis, and satellite cell activation, although these results are not universal. Moreover, excessive training volumes may elevate muscle protein breakdown via activation of catabolic pathways. Methodological factors such as the muscle group and exercises selected, lack of control for prior training volume, overestimation of effect sizes in power calculations, and between-subject variability challenge the interpretation of dose–response relationships. Collectively, these physiological mechanisms and methodological challenges highlight the complexity of establishing a clear and consistent relationship between RT volume and muscle hypertrophy. Expanding our knowledge of the RT dose–response relationship will require rigorous experimental designs, integration of molecular and morphological outcomes, and a greater focus on inter-individual variability. These elements may help clarify whether a true saturation point in RT volume exists for anabolic signaling and muscle hypertrophy.
- 29 August 2025
- Published by Springer Nature in European Journal of Applied Physiology
- Vol. 125 (11) , 3065-3081
Is there a volume saturation point for muscle hypertrophy in resistance-trained individuals? A narrative review
Resistance training (RT) volume is recognized as a key variable driving skeletal muscle hypertrophy. Meta-analyses have supported a positive dose–response relationship, with greater volumes resulting in more pronounced hypertrophic adaptations. However, more recent studies conducted in trained individuals have reported conflicting findings, raising the question of whether a saturation point, defined here as a theoretical threshold beyond which additional training volume no longer yields benefits, might exist, or whether the inconsistencies are better explained by methodological limitations and individual variability. In this narrative review, we explore physiological and methodological factors that may explain such discrepancies. Mechanistically, higher RT volumes are associated with greater anabolic signaling, myofibrillar protein synthesis, ribosomal biogenesis, and satellite cell activation, although these results are not universal. Moreover, excessive training volumes may elevate muscle protein breakdown via activation of catabolic pathways. Methodological factors such as the muscle group and exercises selected, lack of control for prior training volume, overestimation of effect sizes in power calculations, and between-subject variability challenge the interpretation of dose–response relationships. Collectively, these physiological mechanisms and methodological challenges highlight the complexity of establishing a clear and consistent relationship between RT volume and muscle hypertrophy. Expanding our knowledge of the RT dose–response relationship will require rigorous experimental designs, integration of molecular and morphological outcomes, and a greater focus on inter-individual variability. These elements may help clarify whether a true saturation point in RT volume exists for anabolic signaling and muscle hypertrophy.
- 10 July 2025
- Published by Springer Nature in The Psychological Record
- Vol. 75 (3) , 451-467
A Comprehensive Evaluation of Equivalence Classes in Adults with High and Low levels of Self-Reported Depressive Symptoms
- 10 July 2025
- Published by Springer Nature in The Psychological Record
- Vol. 75 (3) , 451-467
A Comprehensive Evaluation of Equivalence Classes in Adults with High and Low levels of Self-Reported Depressive Symptoms
- 28 May 2025
- Published by Springer Nature in The Psychological Record
- Vol. 75 (3) , 435-450
The Effects of Reinforcement and Punishment Magnitude on the Formation and Maintenance of Equivalence Classes
- 28 May 2025
- Published by Springer Nature in The Psychological Record
- Vol. 75 (3) , 435-450
The Effects of Reinforcement and Punishment Magnitude on the Formation and Maintenance of Equivalence Classes
- Open Access
- 15 January 2021
- Published by Center for Open Science in PsyArXiv
Probability Discounting and Adherence to Preventive Behaviors During the COVID-19 Pandemic
This brief communication reports preliminary findings of a study conducted to investigate the relationship between probability discounting and people’s adherence to preventive behaviors recommended during the COVID-19 pandemic. A sample of 112 adults living in Brazil completed an online survey composed of a Probability Discounting Questionnaire (PDQ) and a 10-item assessment of how often they complied with the health authorities’ recommendations (e.g., wash the hands frequently, practice social distancing, stay at home as much as possible, wear a mask when in public). Data analysis included the participants who showed higher (n = 40) and lower (n = 40) adherence to preventive behaviors. Results revealed that probability discounting measures are related to people’s preventive actions. Participants in the higher adherence group present significantly larger risk aversion indices (i.e., larger h values) than participants in the lower adherence group. Also, participants who showed lower adherence to preventive behaviors were more likely to perform risky choices in the PDQ than participants who demonstrated higher compliance with health authorities’ recommendations. These preliminary results suggest that probability discounting can play an essential role in people’s self-protective decisions during a global health emergency, such as the COVID-19 pandemic.
- 15 January 2021
- Published by Center for Open Science in PsyArXiv
Open AccessProbability Discounting and Adherence to Preventive Behaviors During the COVID-19 Pandemic
This brief communication reports preliminary findings of a study conducted to investigate the relationship between probability discounting and people’s adherence to preventive behaviors recommended during the COVID-19 pandemic. A sample of 112 adults living in Brazil completed an online survey composed of a Probability Discounting Questionnaire (PDQ) and a 10-item assessment of how often they complied with the health authorities’ recommendations (e.g., wash the hands frequently, practice social distancing, stay at home as much as possible, wear a mask when in public). Data analysis included the participants who showed higher (n = 40) and lower (n = 40) adherence to preventive behaviors. Results revealed that probability discounting measures are related to people’s preventive actions. Participants in the higher adherence group present significantly larger risk aversion indices (i.e., larger h values) than participants in the lower adherence group. Also, participants who showed lower adherence to preventive behaviors were more likely to perform risky choices in the PDQ than participants who demonstrated higher compliance with health authorities’ recommendations. These preliminary results suggest that probability discounting can play an essential role in people’s self-protective decisions during a global health emergency, such as the COVID-19 pandemic.
- 30 June 2020
- Published by Universidade Federal do Pará in Revista Brasileira de Análise do Comportamento
- Vol. 16 (1)
COMBATENDO A TRAGÉDIA DOS COMUNS: COMO ESTRATÉGIAS DE AUTOCONTROLE E COOPERAÇÃO SOCIAL PODEM CONTRIBUIR PARA O ENFRENTAMENTO DA PANDEMIA DE COVID-19
A pandemia de COVID-19 se configura como um desafio global sem precedentes, cujos impactos sobre os sistemas de saúde ao redor do mundo podem ser caracterizados como uma espécie de tragédia dos comuns, na qual o número de pessoas adoecidas ao mesmo tempo pode superar rapidamente o número de equipamentos hospitalares e a quantidade de profissionais capacitados para prestar os atendimentos necessários. O presente trabalho teve como objetivo discorrer sobre os fatores comportamentais envolvidos em problemas sociais semelhantes aos enfrentados durante a atual situação de pandemia e, a partir disso, explorar estratégias que podem ser utilizadas para potencializar a adoção de ações e intervenções voltadas para minimizar os efeitos da COVID-19 sobre os indivíduos e sobre a sociedade como um todo. Processos comportamentais envolvidos no autocontrole e na cooperação social foram identificados e descritos como relacionados com uma maior ou menor probabilidade de adesão às medidas protetivas necessárias para o enfrentamento da pandemia, tais como o distanciamento social, o fortalecimento de hábitos de higiene e o uso de equipamentos de proteção individual. Com base na literatura analítico-comportamental, foram propostas nove estratégias de autocontrole e cooperação social que se configuram como alternativas não-coercitivas para se frear o avanço da doença, de modo a permitir que os sistemas de saúde atendam adequadamente todas as pessoas que precisem de cuidados médicos nesse momento.Palavras-chave: dilema dos comuns; tomada de decisão; desvalorização pelo atraso; desvalorização pela probabilidade; desvalorização social.
- 30 June 2020
- Published by Universidade Federal do Pará in Revista Brasileira de Análise do Comportamento
- Vol. 16 (1)
COMBATENDO A TRAGÉDIA DOS COMUNS: COMO ESTRATÉGIAS DE AUTOCONTROLE E COOPERAÇÃO SOCIAL PODEM CONTRIBUIR PARA O ENFRENTAMENTO DA PANDEMIA DE COVID-19
A pandemia de COVID-19 se configura como um desafio global sem precedentes, cujos impactos sobre os sistemas de saúde ao redor do mundo podem ser caracterizados como uma espécie de tragédia dos comuns, na qual o número de pessoas adoecidas ao mesmo tempo pode superar rapidamente o número de equipamentos hospitalares e a quantidade de profissionais capacitados para prestar os atendimentos necessários. O presente trabalho teve como objetivo discorrer sobre os fatores comportamentais envolvidos em problemas sociais semelhantes aos enfrentados durante a atual situação de pandemia e, a partir disso, explorar estratégias que podem ser utilizadas para potencializar a adoção de ações e intervenções voltadas para minimizar os efeitos da COVID-19 sobre os indivíduos e sobre a sociedade como um todo. Processos comportamentais envolvidos no autocontrole e na cooperação social foram identificados e descritos como relacionados com uma maior ou menor probabilidade de adesão às medidas protetivas necessárias para o enfrentamento da pandemia, tais como o distanciamento social, o fortalecimento de hábitos de higiene e o uso de equipamentos de proteção individual. Com base na literatura analítico-comportamental, foram propostas nove estratégias de autocontrole e cooperação social que se configuram como alternativas não-coercitivas para se frear o avanço da doença, de modo a permitir que os sistemas de saúde atendam adequadamente todas as pessoas que precisem de cuidados médicos nesse momento.Palavras-chave: dilema dos comuns; tomada de decisão; desvalorização pelo atraso; desvalorização pela probabilidade; desvalorização social.
- 23 May 2017
- Published by Universidade Federal do Pará in Revista Brasileira de Análise do Comportamento
- Vol. 12 (2)
ANÁLISE DO COMPORTAMENTO E SUSTENTABILIDADE: REVISÃO DOS ARTIGOS PUBLICADOS NO BEHAVIOR AND SOCIAL ISSUES DE 2005 A 2016
Analistas do comportamento têm investigado práticas sustentáveis desde a década de 1970. Não obstante, as pesquisas da área são limitadas em relação à abrangência dos alvos de pesquisa/intervenção, à manutenção a longo prazo de comportamentos pró-ambientais, e à sua disseminação para um público amplo. A presente pesquisa buscou identificar os principais alvos de intervenção/análise e a principal contribuição dos artigos publicados entre 2005 e 2016 no periódico Behavior and Social Issues. Os artigos foram identificados por meio dos descritores: sustentabilidade, sustentável, aquecimento global, mudança climática, comportamento pró-ambiental, proteção ambiental, conservação ambiental, reciclagem, e uso de energia. Dos 13 artigos analisados, nove investigaram, teoricamente, novas unidades de análise/intervenção, a relação entre processos psicológicos e sustentabilidade, e os efeitos de consequências imediatas e atrasadas em escolhas sustentáveis. Quatro artigos investigaram empiricamente o efeito de variáveis antecedentes, consequentes, e regras no aumento da reciclagem, na redução do consumo de energia, na transmissão de práticas sustentáveis em uma micro sociedade laboratorial, e na adaptação de um estabelecimento comercial. A presente revisão fornece um panorama da área e tem o potencial de guiar pesquisadores, estudantes, e audiências interessadas na busca por variáveis e estratégias relevantes para a promoção de práticas pró-ambientais.Palavras-chave: sustentabilidade, comportamento pró-ambiental, análise do comportamento
- 23 May 2017
- Published by Universidade Federal do Pará in Revista Brasileira de Análise do Comportamento
- Vol. 12 (2)
ANÁLISE DO COMPORTAMENTO E SUSTENTABILIDADE: REVISÃO DOS ARTIGOS PUBLICADOS NO BEHAVIOR AND SOCIAL ISSUES DE 2005 A 2016
Analistas do comportamento têm investigado práticas sustentáveis desde a década de 1970. Não obstante, as pesquisas da área são limitadas em relação à abrangência dos alvos de pesquisa/intervenção, à manutenção a longo prazo de comportamentos pró-ambientais, e à sua disseminação para um público amplo. A presente pesquisa buscou identificar os principais alvos de intervenção/análise e a principal contribuição dos artigos publicados entre 2005 e 2016 no periódico Behavior and Social Issues. Os artigos foram identificados por meio dos descritores: sustentabilidade, sustentável, aquecimento global, mudança climática, comportamento pró-ambiental, proteção ambiental, conservação ambiental, reciclagem, e uso de energia. Dos 13 artigos analisados, nove investigaram, teoricamente, novas unidades de análise/intervenção, a relação entre processos psicológicos e sustentabilidade, e os efeitos de consequências imediatas e atrasadas em escolhas sustentáveis. Quatro artigos investigaram empiricamente o efeito de variáveis antecedentes, consequentes, e regras no aumento da reciclagem, na redução do consumo de energia, na transmissão de práticas sustentáveis em uma micro sociedade laboratorial, e na adaptação de um estabelecimento comercial. A presente revisão fornece um panorama da área e tem o potencial de guiar pesquisadores, estudantes, e audiências interessadas na busca por variáveis e estratégias relevantes para a promoção de práticas pró-ambientais.Palavras-chave: sustentabilidade, comportamento pró-ambiental, análise do comportamento
- 1 May 2016
- Published by Springer Nature in Behavior and Social Issues
- Vol. 25 (1) , 61-76
Fostering the Sustainable use of Common-Pool Resources through Behavioral Interventions: an Experimental Approach
This study proposes the use of an experimental analogue of natural resource exploitation to evaluate the effects of the real-time displaying of the amount of available resources and the provision of written feedback messages on the resource extraction behavior of participants sharing a common-pool whereby participants are physically and verbally isolated from each other. The experiment involved the application of a three-member common-pool resources (CPR) game. The members of the groups sharing the CPR were changed periodically and were allowed to talk briefly to each other so that an experienced participant could give instructions to a newcomer. In this way, it was also possible to evaluate how the accuracy of instructions regarding resource preservation and sustainability affects group member resource extraction patterns and CPR maintenance in the long run. Twenty-two college students took part and were distributed into three groups: Control, Display, and Feedback. The amount of resources extracted individually and by the groups in every round of the game was analyzed, as were the verbal responses of the experienced participants when giving instructions to newcomers. Results showed that the manipulated variables were effective for the short-term decrease in the amount of resources extracted by the members of the Display and Feedback groups. The accuracy of the instructions was also important for the sustained maintenance of the pattern of consumption established by the manipulated variables, leading to the recovery and the preservation of the resources in a greater number of the game’s rounds.
- 1 May 2016
- Published by Springer Nature in Behavior and Social Issues
- Vol. 25 (1) , 61-76
Fostering the Sustainable use of Common-Pool Resources through Behavioral Interventions: an Experimental Approach
This study proposes the use of an experimental analogue of natural resource exploitation to evaluate the effects of the real-time displaying of the amount of available resources and the provision of written feedback messages on the resource extraction behavior of participants sharing a common-pool whereby participants are physically and verbally isolated from each other. The experiment involved the application of a three-member common-pool resources (CPR) game. The members of the groups sharing the CPR were changed periodically and were allowed to talk briefly to each other so that an experienced participant could give instructions to a newcomer. In this way, it was also possible to evaluate how the accuracy of instructions regarding resource preservation and sustainability affects group member resource extraction patterns and CPR maintenance in the long run. Twenty-two college students took part and were distributed into three groups: Control, Display, and Feedback. The amount of resources extracted individually and by the groups in every round of the game was analyzed, as were the verbal responses of the experienced participants when giving instructions to newcomers. Results showed that the manipulated variables were effective for the short-term decrease in the amount of resources extracted by the members of the Display and Feedback groups. The accuracy of the instructions was also important for the sustained maintenance of the pattern of consumption established by the manipulated variables, leading to the recovery and the preservation of the resources in a greater number of the game’s rounds.
- 1 September 2015
- Published by American Psychological Association (APA) in Psychology & Neuroscience
- Vol. 8 (3) , 385-396
Effects of preexperimental history on the formation of stimulus equivalence classes: A study with supporters of Brazilian soccer clubs.
- 1 September 2015
- Published by American Psychological Association (APA) in Psychology & Neuroscience
- Vol. 8 (3) , 385-396
Effects of preexperimental history on the formation of stimulus equivalence classes: A study with supporters of Brazilian soccer clubs.