Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2009) 08, 197 - 202

Research article
Influence of Two Different Rest Interval Lengths in Resistance Training Sessions for Upper and Lower Body
Gilmar Senna , Belmiro F. Salles, Jonato Prestes, Rafael A. Mello, Simão Roberto
Author Information
Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil

Gilmar Senna
✉ Universidade Federal do Rio de Janeiro. School of Physical Education and Sports. Rio de Janeiro, RJ 22941-590, Brazil.
Email: sennagw@hotmail.com
Publish Date
Received: 19-08-2008
Accepted: 25-11-2008
Published (online): 01-06-2009
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ABSTRACT

Rest intervals between sets appear to be an important variable that can directly affect training volume and fatigue. The purpose of the present study was to compare the influence of two and five-minute rest intervals on the number of repetitions per set, per exercise and total repetitions in resistance training sessions. Fourteen trained men (23.0 ± 2. 2 yrs; 74.9 ± 4.1 kg; 1.75 ± 0.03 m) completed three sets per exercise, with 10RM load in four training sessions. Two sessions involved lower body exercises (leg press, leg extension and leg curl), with two-minute (SEQA) and with five-minute interval (SEQB). The other two sessions involved upper body exercises (bench press, pec-deck and triceps pulley), with two (SEQC) and five-minute intervals (SEQD). For two-minute, five of six exercises presented reductions in the second set, compared with the first set, and for the third set compared with the first and second sets. For five-minute, three of the six exercises presented reductions in the third set, compared with the first sets, and two of the six for the third set, compared with the second sets. The total number of repetitions in SEQA (66.7 ± 4.9) was significantly smaller than in SEQB (80.9 ± 6.9). Similarly, the total repetitions was significantly lower in SEQC (71.1 ± 4.7) compared with SEQD (83.7 ± 6.1). The results indicate that the training session performance is reduced by shorter intervals, being the initial exercises less affected during the progression of the sets.

Key words: Muscle strength, weight lifting, exercise, physical fitness.


           Key Points
  • Shorter rest interval between the sets and exercise in resistance training sessions for upper and lower body resulted in significant declines on the number of repetitions during the progression of the sets and exercises.
  • Longer rest intervals seem to be necessary to avoid significant declines in the number of repetitions during the progression of sets and exercises during a resistance training sequence, principally for the exercises performed last.
  • An important variable when maximal strength is desired is the volume of repetitions or total work. To achieve specific volumes longer rest interval is necessary.
 
 
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