Physiological Correlates of Perceived Exertion in Continuous and Intermittent Exercise with the Same Average Power Output

Edwards, R. H. T.; Melcher, A.; Hesser, C. M.; Wigertz, Ove; Ekelund, Lars‐Göran

doi:10.1111/j.1365-2362.1972.tb00578.x

Cited by 91 publications

(53 citation statements)

References 16 publications

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“…In a previous study (Edwards, Melcher, Hesser, Wigertz & Ekelund, 1972) it was found that the higher rating of perceived exertion in intermittent exercise was closely correlated with the greater heart rate, ventilation, oxygen intake and blood lactate concentrations in this form of exercise compared with continuous exercise with the same average power output. The present study investigates further the relative costs, in terms of the cardiorespiratory adaptations to exercise and utilization of local energy stores in muscle, of the two types of exercise.…”

Section: Introductionmentioning

confidence: 88%

Cardiorespiratory and metabolic costs of continuous and intermittent exercise in man

Edwards¹,

Ekelund²,

Harris³

et al. 1973

The Journal of Physiology

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SUMMARY1. Cardiorespiratory and metabolic responses to paired patterns of continuous and intermittent exercise with the same average power output were studied in eight men. Heart rate, ventilation and pulmonary gas exchange were measured during the different patterns of exercise performed on a cycle ergometer. The recovery oxygen volume was measured over 30 min of loadless pedalling. Needle biopsy samples of the vastus lateralis muscle were taken before, during and after completion of the exercise for measurement of muscle metabolites.2. Heart rate, ventilation, oxygen intake, respiratory exchange ratio, and blood lactate concentration were generally higher with intermittent compared with continuous exercise as were the accumulated totals for heart beats, ventilation and oxygen intake. Muscle biopsy samples tended to have higher lactate and lower phosphocreatine contents in intermittent exercise. The lactate concentration in muscle and blood water was the same during loadless pedalling before exercise but was significantly higher in muscle than blood during exercise. This concentration gradient was larger in intermittent than in continuous exercise.3. Work efficiency, calculated from the total oxygen cost of work in excess of a loadless pedalling control, was significantly lower in intermittent exercise. The explanation is thought to be connected with the observation that when the work was performed at a high rate in short bursts a large part of the oxidative recovery took place after the contraction during the rest periods, whereas in the low intensity continuous exercise the oxygen

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Section: Introductionmentioning

confidence: 88%

Cardiorespiratory and metabolic costs of continuous and intermittent exercise in man

Edwards¹,

Ekelund²,

Harris³

et al. 1973

The Journal of Physiology

Self Cite

View full text Add to dashboard Cite

show abstract

“…Further* since many physiological measures (eg., oxygLn consumption, heart rate, minute ventilation) also Increase as a function of Increasin$ work Intensity, the fact that RPE Increases as a function of these physiological measures (Borg and Underholm, 1967;Borg and Noble, 1974;Edwards et al, 1972;Ekblom and Goldharg, 1971) Is also not surprising.…”

Section: Ve;21ý/vcmentioning

confidence: 99%

Perception of Effort during Constant Work to Self-Imposed Exhaustion

et al. 1979

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The purpose of this study was to describe the pattern of change in effort sense and the value of this pattern in predicting work end-point at relatively high work intensity (80% V̇O2 max). The patterns of change of various physiological functions were also observed. Two modes of work (walking and running) were compared to ascertain generalizability of results. 26 healthy male volunteers served as subjects. Time to exhaustion (ET) did not differ between walking and running. As work continued during both tasks, significant increases of V̇E, V̇E/V̇O2, V̇E/V̇CO2 and HR and a significant decrease of ET were observed; while V̇O2 and R remained fairly constant. V̇O2 and V̇E during the run were about 5% greater than during the walk; there were no differences in other measures. Ratings of perceived exertion (RPE) from the Borg Scale were identical for both conditions, increasing in a near linear fashion from a value of 12.9 at 25% of total work time to 18.9 at exhaustion. Ratings obtained at 25 and 50% ET were extrapolated to time of exhaustion; the point of intercept corresponded to ratings of perceived exertion for maximal work. At exhaustion, subjects rated perception of respiratory exertion for the walk as less than that for the run; perception of leg exertion was not different for the two conditions. Plasma lactate, epinephrine and norepinephrine concentrations following exercise did not differ between the two conditions. The findings for the walking experiment were essentially replicated in a second investigation involving another 28 subjects. It is concluded that, with the exception of V̇O2 and some ventilatory parameters, walking and running ar the same relative work intensity resulted in comparable perceptual and physiological responses. Psychophysical judgments made early during work were reasonably accurate predictors of exhaustion time.

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“…As modalidades de exercícios utilizados nos estudos foram ciclo ergômetro (38%) 21,23,25,[27][28][29] , esteira (19%) 22,24,26 , exercícios resistidos (13%) 24 , ciclismo indoor (19%) 30,31,32 , jogos no Nintendo Wii (6%) 33 e ciclo ergômetro adaptado para piscina (6%) 24 . Dentre os protocolos utilizados nos artigos, quatro estudos aplicaram protocolos de teste com carga incremental (25%), um estudo aplicou carga decremental (6%), quatro estudos aplicaram carga contínua (25%) e sete estudos aplicaram carga intervalada (44%).…”

Section: Resultsunclassified

“…A percepção subjetiva de esforço foi correlacionada com a frequência cardíaca (FC), potência, taxa ventilatória, consumo de oxigênio, eficiente metabólico bruto e concentração de lactato sanguíneo. A percepção subjetiva de esforço e a frequência cardíaca (FC) foram correlacionadas em dez artigos, sendo que um estudo apresentou correlação muito forte (r = 0,90  1,00) 23 , cinco estudos apresentaram correlação forte (r = 0,70  0,90) 21,22,25,27,28 , dois estudos apresentaram correlação moderada (r = 0,50  0,70) 26,29 , um estudo apresentou correlação fraca (r = 0,30  0,50) 33 e um estudo apresentou correlação muito fraca (r = 0,00  0,30) 32 . Além disso, um estudo apresentou coeficiente de regressão alto para teste de esteira (70%, R 2 =0,70) e relativamente fraca para exercício resistido (27%, R 2 =0,27) 24 .…”

Section: Resultsunclassified

A Systematic Review of Cross-Cultural Adaptation and Validation of Borg's Rating of Perceived Exertion Scale

Cabral¹,

Lopes²,

Wolf³

et al. 2017

J Phys Educ

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RESUMOO objetivo dessa revisão sistemática foi analisar os processos de adaptação transcultural e validação da Escala de Percepção Subjetiva de Esforço de Borg (6-20) e de suas instruções durante o exercício em adultos e idosos. A busca foi realizada nas bases de dados da área da saúde, esporte e psicologia (Pubmed, ScienceDirect, Bireme (BVS), PsycINFO, SportDiscus e Scopus) e os descritores em inglês e português foram padronizados para todas as bases de dados ("exercise"/"exercício"; "validity"/"validade"; "borg scale"/"escala de borg"; "perceived exertion"/"percepção de esforço"; e "validation"/"validação"). Entre os 1488 artigos encontrados, foram selecionados 14 artigos para análise. Os principais resultados encontrados foram que a adaptação transcultural (Cantonês e Japonês) foi reportada em apenas quatro artigos. Os critérios mais baixos de qualidade metodológica foram aqueles relacionados a definição de percepção de esforço, a instrução e familiarização com a Escala. Os resultados indicam que a maioria dos estudos não realizou o processo de adaptação transcultural e além disso, só a validade concorrente foi utilizada como método de validação. Portanto, é necessário realizar adaptação transcultural da Escala de Borg (6-20) principalmente na língua portuguesa, além dos diferentes tipos de validação para se obter resultados mais precisos. Palavras-chave: Exercício. Percepção. Validade dos testes. Tradução. ABSTRACTThe aim of this systematic review was to check the cross-cultural adaptation and validation processes of Borg's Rating of Perceived Exertion Scale (6-20) and its instructions during exercise in adults and older adults. The research was conducted in databases that cover the area of health, sport and psychology (Pubmed, ScienceDirect, Bireme (BVS), PsycINFO, SportDiscus and Scopus) and descriptors in English and Portuguese languages were standardized for all databases ("exercise" / "exercicio", "validity" / "validade", "borg scale" / "escala de borg"; "perceived exertion" / "percepção de esforço" and "validation" / "validação"). From 1488 items found, 14 articles were selected for analysis. The main findings were that the cross-cultural adaptation (Cantonese and Japanese) had been reported by four articles. The methodological quality criteria that less scored were related to concept of perception of effort, instructions to use and familiarization with Borg's scale. The concurrent validity was the only validation method reported. Therefore, it is required to perform cross-cultural adaptation of Borg's Scale (6-20), mainly to Portuguese language. Thus, different validation processes should be pefromed to ensure high accuracy in the results. Keywords: Exercise. Perception. Validity of tests. Translating. IntroduçãoA percepção de esforço pode ser definida como a percepção de quão pesada e extenuante é uma tarefa física 1 . É uma medida psicofisiológica, que tem como objetivo quantificar a percepção subjetiva de esforço originada através de todos os sistemas corporais 1,2 . Várias pesquisas têm demonstra...

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Physiological Correlates of Perceived Exertion in Continuous and Intermittent Exercise with the Same Average Power Output

Cited by 91 publications

References 16 publications

Cardiorespiratory and metabolic costs of continuous and intermittent exercise in man

Cardiorespiratory and metabolic costs of continuous and intermittent exercise in man

Perception of Effort during Constant Work to Self-Imposed Exhaustion

A Systematic Review of Cross-Cultural Adaptation and Validation of Borg's Rating of Perceived Exertion Scale

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