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Maternal and Fetal Chronotropic Response Induced by Acute Session of Resistance Exercises

2006; Lippincott Williams & Wilkins; Volume: 38; Issue: Supplement Linguagem: Inglês

10.1249/00005768-200605001-02164

1530-0315

Luciano P. Laiter, Sergio G. Gollo, Osmar Latif, Francisco Navarro, Reury F. P. Bacurau, Francisco Luciano Pontes, Vagner Raso,

Cardiovascular and exercise physiology

PURPOSE: Determine the maternal and fetal chronotropic response induced by acute session of resistance exercises. METHODS: The sample was constituted by 4 pregnant women aged from 17 to 34 years-old (x: 24.50 ± 8.80 years), and mean gestational age of 27.00 ± 4.69 weeks. Volunteers were submitted to an acute session of resistance exercises composed of 3 sets of 10 repetition for lattissimus pull down, leg extension, shoulder press, leg flexion, seated row, hip adduction, and seated bench press exercises in the respective order. The workload was established by 10-RM according to the rate of perceived exertion (0 – 10). Maternal heart rate was determined before and immediatelly after each sets through heart rate monitor (POLAR [Vantage NV model]), whilst fetal heart rate was continuously analyzed during all session at 1 minute intervals by cardiotocograph (CTG) equipment (Embraeme [Khoson, ARG], TM4 model). RESULTS: There was statistically significant increase on maternal chronotropic response immediatelly after each set when compared with pre-set period (p 0.01). CONCLUSIONS: The results permit to conclude that a light to moderate resistance exercises session doesn't induce significant change on fetal chronotropic response, suggesting which that session represented a safety form of exercise for the (pregnant and fetus). *Partially supported by Academia Atlantis (Americana, São Paulo, Brazil).