Validade das equações preditivas de uma repetição máxima varia de acordo com o exercício realizado em adultos jovens treinados

Menêses, Annelise Lins; Santana, Fábio; Soares, Antônio Alves; Souza, Bruna; Souza, Diogo O.; Santos, Marcos dos; Cyrino, Edílson Serpeloni; Ritti‐Dias, Raphael Mendes

doi:10.12820/2317-1634.2013v18n1p95

Cited by 8 publications

(7 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…After the warming up stage (20–30 repetitions with subjectively low load), the participant was asked to establish a load for which they could perform a maximum of 10 repetitions. The load and the number of repetitions to perform this task were applied to Brzycki (1993) equation, a valid method to establish the maximum load value in leg-extension exercises ( Menêses et al, 2013 ). The load could increase according to the participant’s feedback and could reduce in case of inability to perform the exercise.…”

Section: Methodsmentioning

confidence: 99%

A New Approach to Evaluate Neuromuscular Fatigue of Extensor Elbow Muscles

2020

View full text Add to dashboard Cite

Neuromuscular fatigue evaluation is widely performed on different muscles through the conventional protocol using maximum voluntary contraction (MVC) with electrical stimuli in the analyzed muscle. In an attempt to use this protocol on elbow extensor musculature, previous studies and pilot studies showed co-contraction effects from antagonist musculature during muscular stimulations. The aim of this study was to propose a new neuromuscular fatigue protocol evaluation on elbow extensor musculature. Twenty participants preformed exercises to induce central (CenFat) and peripheral fatigue (PerFat). Neuromuscular fatigue was evaluated on knee extensor muscles by a conventional protocol that provides Twitch Superimposed (TS K) and Twitch Potentiated (TP K), central and peripheral parameters respectively. For elbow extensor muscles, the protocol used sustained submaximal contraction at 10, 20, 30, 40, and 50% of MVC. The neuromuscular fatigue in upper limbs was identified by Twitch Potentiated (TP E) and multiple Twitch Superimposed (TS E) parameters. Using the relationship between MVC (%) and evoked force, the proposed protocol used several TS E to provide slope, y-intercept and R 2. It is proposed that slope, R 2 , and y-intercept change may indicate peripheral fatigue and the identified relationship between y-intercept and R 2 may indicate central fatigue or both peripheral and central fatigue. The results were compared using the non-parametric analyzes of Friedmann and Wilcoxon and their possible correlations were verified by the Spearmann test (significance level set at p < 0.05). After PerFat a decrease in TP E (57.1%, p < 0.001) was found but not in any TS E , indicating only peripheral fatigue in upper limbs. After CenFat a decrease in TP E (21.4%, p: 0.008) and TP K (20.9%, p < 0.001) were found but not in TS K , indicating peripheral fatigue in upper and lower limbs but not central fatigue. A non-significant increase of 15.3% after CenFat and a statistical reduction (80.1%, p: 0.001) after PerFat were found by slope. Despite R 2 showing differences after both exercises (p < 0.05), it showed a recovery behavior after CenFat (p: 0.016). Although PerFat provided only peripheral fatigue, CenFat did not provide central fatigue. Considering the procedural limitations of CenFat, parameters resulting from the proposed protocol are sensitive to neuromuscular alteration, however, further studies are required.

show abstract

Section: Methodsmentioning

confidence: 99%

A New Approach to Evaluate Neuromuscular Fatigue of Extensor Elbow Muscles

2020

View full text Add to dashboard Cite

show abstract

“…To determine the load of the resisted exercise, a maximal repetition test (1MR) was performed for each activity. The initial load was determined subjectively, indicated by the volunteer himself, who made 3 attempts with an interval of 5 min between them (13) , in the exercises: bench press, leg curl, rowing machine, horizontal leg press, triceps pulley, extension chair, developing machine, seated calf and biceps machine.…”

Section: Methodsmentioning

confidence: 99%

Acute effect of aerobic and resistance exercises on cardiovascular and neuromuscular responses in normotensive

Ruíz¹,

Pires²,

Pelai³

et al. 2020

mtprehabjournal

View full text Add to dashboard Cite

Introduction: the literature report the effect of different types of exercise (aerobic and resisted) on cardiovascular and neuromuscular behavior after exercise. Objective: the objective of this study was to verify the acute effect after a resisted or aerobic exercise session on arterial pressure (BP), heart rate (HR), muscular strength and electromyography (EMG) activity of the rectus femoris (RF), vastus lateralis (VL) and vastus medialis (MV) in normotensive individuals. Method: the study included eight men (27.3 ± 3.1 years, 76.4 ± 9.7 kg, 1.80 ± 0.10 m, 24.3 ± 1.6 kg/m2 ), physically active individuals who randomly performed an aerobic exercise session (treadmill, 30 min, 60-70% of the reserve heart rate), or a resisted exercise session (nine exercises, three sets, 70% 1RM, 8 -12 repetitions). The BP, HR, EMG and muscle strength, were analyzed at rest before exercise and for 60 min after exercise. Results: as a result, systolic BP after the exercises (aerobic and resisted) remained lower than the pre-exercise rest values, with 30, 45 and 60 min (p<0.05) of recovery. On the other hand, the diastolic BP was lower after resistive exercise in all periods of recovery (p <0.01) in relation to pre-exercise. HR values remained elevated after aerobic and resisted exercise, in all recovery periods (p <0.05). Muscle strength and electromyography activity did not show significant differences after exercise. Conclusion: independently of the exercise type, occurs post-exercise hypotension (PEH), increase the HR during the recovery period and reestablishment of muscle strength and myoelectric activity of muscles compared to pre-exercise.

show abstract

“…Muscle strength was determined by using the 4-10 RMs test. We used the equations from Epley 20 [1RM = (0.0333 x reps) x submaximal load + submaximal load)] and Adams 21 [1RM = submaximal load / [100 -(2 x reps)] x 100] to predict the values of the participants' 1RM of exercise for upper and lower limbs, respectively, based on the findings of Meneses et al 22 . The exercises included bench press, leg extension, driven pulley, leg flexion, lateral shoulder raise and a triceps pulley (Righetto® brand).…”

Section: -10 Repetition Maximum (Rm) Testmentioning

confidence: 99%

Effects of one resistance training session on body checking behaviors in male adults

Fortes

Ferreira

Vianna

et al. 2018

Rev Bras Educ Fís Esporte

View full text Add to dashboard Cite

The objective of this study is to analyse the effects of a session of resistance training on body checking in male adults. Participants included 50 volunteers aged between 18 and 30 years. A single session of resistance training was performed, and we used hypertrophy as our training method. Body checking behaviors were assessed using the Male Body Checking Questionnaire (MBCQ). Participants answered the MBCQ before (T1), immediately after (T2), and 24 h (T3), 48 h (T4) and 72 h (T5) after the resistance training session. The findings showed no difference in the subscale "compared to other people" (p=0.32). However, statistically significant differences were found for the subscales “use of reflective surface” (p=0.03), "check by clamping" (p=0.04) and "evaluation by others" (p=0.02). We concluded that a single session of resistance training was able to positively change some body checking behaviors of male adults.

show abstract

Validade das equações preditivas de uma repetição máxima varia de acordo com o exercício realizado em adultos jovens treinados

Cited by 8 publications

References 12 publications

A New Approach to Evaluate Neuromuscular Fatigue of Extensor Elbow Muscles

A New Approach to Evaluate Neuromuscular Fatigue of Extensor Elbow Muscles

Acute effect of aerobic and resistance exercises on cardiovascular and neuromuscular responses in normotensive

Effects of one resistance training session on body checking behaviors in male adults

Contact Info

Product

Resources

About