摘要：Braz TV, Ornelas F, Matos NR, Germano MD, Sindorf MAG, Moreno MA, Lopes CR. Chronic Effect of Different Load Distributions on the Autonomic Heart Rate Modulation. JEPonline 2016;19(2):55-67. The purpose of the current study was to assess and compare the chronic effect of exercise training and different external training load distributions (ETL) on the autonomic heart rate (HR) modulation of 21 healthy adult women who were randomly divided into 3 groups: Linear Load (LL, n = 8); Undulating Load (UL, n = 8), and Control Load (CL, n = 5). They were assessed before (A1) and after (A2) 12 aerobic training sessions: Heart rate variability (HRV) at rest (HRVrest) and post exercise (HRVpost-exercise), Heart Rate at Rest (HRrest), incremental shuttle walk test (ISWT) and HRV threshold (HRVT). The internal training load (ITL) was calculated using the Foster method. The ETL in the CL group Zone 1 was greater than that of the LL and UL groups (P = 0.008). There was no significant difference (P = 0.575) between the ITL of the CL (13474 ± 1059 a.u.), LL (12650 ± 1411 a.u.), and UL (12734 ± 846 a.u.) groups. All variables showed significant differences (P<0.05) from A1 to A2, with the exception of HRrest for CL and LL and of HRVpost-exercise for CL. The effect size was great for HRVpost-exercise and HRVT in the UL group (ES = 2.07 and 2.97). The findings indicate that the subjects improved in aerobic capacity, HRVT speed and HRrest regardless of the load distribution. However, the CL group needed more ETL than the LL and UL groups in Zone 1. The ITL did not differ during the sessions, indicating that the ETL periodization increased the chronic adaptations of the proposed training, especially for UL.
