of short rest periods on neuromuscular responses to resistance exercise
in trained men
Mohammadi Sajad1, Damirchi Arsalan1, Ahmadi Rahmat2
1Department of Physical Education & Sport Sciences, Rasht, Iran
2Department of Physical Education & Sport Sciences, Guilan University, Rasht, Iran
study examined the effect of three different rest intervals in
resistance training (RE) on neuromuscular responses. Method. Twelve
healthy trained males of students of Guilan University (mean age
21.67±2.309 years, weight 65.067±7.14 kg and height
171.17±7.030 cm) voluntarily participated in the study. Subjects
at three separate sessions of an RE protocol were assigned in a random
order a rest interval of 60s (P60), 90s (P90) or 120s (P120) between
sets. The RE session consisted of 4 sets of knee extension to failure
using 80% of 1 maximum repetition. Integrated electromyography (IEMG)
right femoral muscle was recorded before and immediately after exercise
protocols, also was calculated training volume in all rest intervals.
Statistical evaluation of the data was accomplished by a repeated
measures analysis of variance.
Result. The results showed no
significant difference in values of IEMG between the rest intervals
p≤0/45, but after the training values of IEMG were significantly
decrease in all rest intervals p≤0/001. Training volume performed in
P90 and P120 significantly greater than P60 p≤0/001 but there was no
significant difference between P90 and P120 p≤0/99.
It is concluded that all three rest intervals caused fatigue and
decreased IEMG values but decreased IEMG values in rest interval of 60s
more than 90s and 120s, respectively.
resistance training, rest interval, electromyography, fatigue