Determining the Magnitude of Treatment Effects in Strength Training Research Through the Use of the Effect Size

Rhea, Matthew R.

doi:10.1519/14403.1

Cited by 531 publications

(471 citation statements)

References 7 publications

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“…Partial Eta squared statistics ( 2 ) were analyzed to determine the magnitude of an effect independent of sample size. Pre/Post effect sizes were calculated for each group and performance measure [20]. The coefficient of the transfer was then calculated from squat result gains to vertical jump and sprinting speed via a calculation reported by Zatsiorsky [21]: Transfer = Result Gain in nontrained exercise/Result Gain in trained exercise…”

Section: Statistical Analysesmentioning

confidence: 99%

Joint-angle specific strength adaptations influence improvements in power in highly trained athletes

Rhea¹,

Kenn²,

Peterson³

et al. 2018

Hum Mov.

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Purpose. The purpose of this study was to examine the influence of training at different ranges of motion during the squat exercise on joint-angle specific strength adaptations. Methods. Twenty eight men were randomly assigned to one of three training groups, differing only in the depth of squats (quarter squat, half squat, and full squat) performed in 16-week training intervention. Strength measures were conducted in the back squat pre-, mid-, and post-training at all three depths. Vertical jump and 40-yard sprint time were also measured. Results. Individuals in the quarter and full squat training groups improved significantly more at the specific depth at which they trained when compared to the other two groups (p < 0.05). Jump height and sprint speed improved in all groups (p < 0.05); however, the quarter squat had the greatest transfer to both outcomes. Conclusions. Consistently including quarter squats in workouts aimed at maximizing speed and jumping power can result in greater improvements.

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Section: Statistical Analysesmentioning

confidence: 99%

Joint-angle specific strength adaptations influence improvements in power in highly trained athletes

Rhea¹,

Kenn²,

Peterson³

et al. 2018

Hum Mov.

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“…where M E =the mean of the experimental group, M C =the mean of the control group, and SD C =the standard deviation of the control group (Rhea 2004). For determination of the magnitude of effect sizes, we considered the following values for untrained individuals (Rhea 2004).…”

Section: Statistical Analysesmentioning

confidence: 99%

“…For determination of the magnitude of effect sizes, we considered the following values for untrained individuals (Rhea 2004). Trivial (<0.50), small (0.50-1.25), moderate (1.25-1.9), and large (>2.0).…”

Section: Statistical Analysesmentioning

confidence: 99%

Understanding the individual responsiveness to resistance training periodization

Prestes

Nascimento

Tibana

et al. 2015

AGE

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This study was designed to compare the effects of linear periodization (LP) and undulating periodization (UP) on functional capacity, neuromuscular function, body composition, and cytokines in elderly sedentary women. We also aimed to identify the presence of high responders (HR), medium responders (MR), and low responders (LR) for irisin, interleukin-1 beta (IL-1β), toll-like receptor-4 (TLR-4), and brainderived neurotrophic factor (BDNF) to resistance training (RT). Forty-nine elderly women were assigned to a control group, LP, and UP scheme. Functional capacity, body composition, maximal strength, irisin, TLR-4, BDNF, and IL-1β were evaluated. Both periodization models were effective in improving 45°leg press 1RM, chair-stand, arm curl, and time-up and go tests, with no significant differences in body composition and cytokines. Furthermore, HR, MR, and LR were identified for irisin, IL-1β, TLR-4, and BDNF, with differences between groups and moments. This study provides evidence that both periodization models were effective in improving functional capacity and neuromuscular function, with no effect on body composition and cytokines (probably as a consequence of the different responsiveness). Furthermore, for the first time, HR, MR, and LR were identified for irisin, IL1-β, TLR-4, and BDNF in response to RT.

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“…Foram utilizados os seguintes critérios para o CCI: < 0,4 pobre; 0,4 -< 0,75 satisfatório; ≥ 0,75 excelente 25 . O cálculo do efeito do tamanho (Effect Size, ES) foi realizado através da formula de Cohen e os resultados se basearam nos seguintes critérios: <0,35 efeito trivial; 0,35-0,80 pequeno efeito; 0,80-1,50 efeito moderado; e >1,5 grande efeito, para sujeitos treinados de forma recreacional baseando em Rhea 26 . Uma significância (α) de 5% foi utilizada para todos os testes estatísticos, através do software SPSS versão 18.0.…”

Section: Análise Estatísticaunclassified

Alongamento Intermitente E Contínuo Aumentam a Amplitude De Movimento E Reduzem a Força Dos Flexores De Punho

Marchetti

Mattos

Serpa

et al. 2015

Rev Bras Med Esporte

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REsUMOIntrodução: A manipulação do intervalo entre séries pode influenciar o desempenho de atividades subsequentes. Objetivo: Comparar o efeito do intervalo de alongamento estático de forma continua e intermitente no desempenho de flexores de punho. Métodos: A amostra foi composta por 14 adultos jovens, hígidos, do gênero masculino (idade 31±9 anos; estatura 178±0,7 cm; massa 85±12 Kg). Foi avaliada a amplitude de movimento passivo (ADMP) em extensão de punho, a força isométrica máxima de flexão de punho associado a eletromiografia superficial antes e depois de dois protocolos de alongamento com diferentes intervalos entre séries. Para cada sujeito, um dos membros superiores foi alongado com o protocolo contínuo (CON INT (81°±10 and 94°±10, P<0.001) and CON (87°±12 and 96°±11, P=0.004). The results for peak force showed significant reduction in post-intervention conditions for both protocols: INT (205±54 Kgf and 148±56 Kgf, P<0.001) and CON (211±39 Kg and 144±36 Kgf, P<0.001). The results for the rate of force development showed significant increase in pre and post-intervention conditions for both protocols INT (0.52 ± 0.29 Kgf/ms and 1.24±0.45 Kgf/ms, P<0.001) and CON (0.43±0.29 Kgf/ms and 1.11±0.34 Kgf/ms, P<0.001). Conclusion: Both protocols increased the passive range of motion, reduced the peak force and the rate of force development, without changes in the activation of wrist flexors.

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Determining the Magnitude of Treatment Effects in Strength Training Research Through the Use of the Effect Size

Cited by 531 publications

References 7 publications

Joint-angle specific strength adaptations influence improvements in power in highly trained athletes

Joint-angle specific strength adaptations influence improvements in power in highly trained athletes

Understanding the individual responsiveness to resistance training periodization

Alongamento Intermitente E Contínuo Aumentam a Amplitude De Movimento E Reduzem a Força Dos Flexores De Punho

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