The effect of alternation in the exercises of large and small groupings in lower limbs on lactacidemia and cardiovascular parameters
Abstract
The aim of this study was to investigate the influence of alternating the exercises execution order for legs: Squat Free (AGL) and extensor chair (EC) on the lactacidemia, perception scale of OMNI effort and cardiovascular parameters. 10 volunteers 27.3 ± 1.7 anos; 177.3 ± 2.4cm; 87.5 ± 4.1kg were two sequences of 3 sets of 10 repetitions at 70% 1RM squat free (SF) and leg extension (LE) alternating exercises. The first sequence SF and EC and the second sequence LE and SF. They were measured at rest and after each series: lactacidemia, perceived exertion by OMNI, heart rate, systolic blood pressure, diastolic blood pressure and double product. All parameters studied showed significant increases in the second sequence when compared to the first sequence. We therefore conclude that performing a sequence resistance exercise starting with recruitment of small anterior muscle groups to large groups induces a significant stress on the metabolic system (lactacidemia), perceived exertion (scale of perceived OMNI effort) and cardiovascular system ( HR, SBP, DBP and DP). Therefore, the rules of the American College of Sports Medicine suggests training large previous groups small is adequate, we suggest that the alternation would have carried a stress overload and increased fatigue, it may be the objective of some resistance training programs in order muscle hypertrophy.
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