Effects of repeated yearly exposure to exercise-training on blood pressure andmetabolic syndrome evolution
Morales Palomo, Felix Alberto
Ortega, Juan Fernando
López-Galindo, Pedro L.
MetadataShow full item record
Objective: To study if repeated yearly training programs consolidate the transient blood pressure (BP) improvements of one exercise program into durable adaptations. Methods: Obese middle-age individuals with metabolic syndrome (MetS) underwent high-intensity aerobic interval training during 16 weeks (November to mid-March) in 3 consecutive years [training group (TRAIN); N¼23]. Evolution of MetS components was compared with a matched-group that remained sedentary [control group (CONT); N¼26]. Results: At the end of the first training program (0–4 months), TRAIN lowered systolic arterial pressure, blood glucose, waist circumference and MetS Z-score below CONT ( 8.5 2.5mmHg; 19.9 2.6 mg/dl; 3.8 0.1cm and 0.3 0.1, respectively, all P<0.05). With detraining (month 4–12) TRAIN adaptations relapsed to the levels of baseline (month 0) except for BP. A second exercise program (month 12–16) lowered blood glucose and waist circumference below CONT ( 19.0 2.0 mg/dl; 4.1 0.1 cm). After detraining (month 16–24) BP, blood glucose and Z-score started below CONT values ( 6.8 0.9 mmHg; 24.6 2.5 mg/dl and 0.4 0.05, respectively, all P<0.05) and those differences enlarged with the last training program (month 24–28). Ten-year atherosclerotic cardiovascular disease risk estimation increased only in CONT (8.6 1.1–10.1 1.3%; year 2–3; P<0.05). Conclusion: At least two consecutive years of 4-month aerobic interval training are required to chronically improve MetS (Z-score). The chronic effect is mediated by BP that does not fully return to pretraining values allowing a cumulative improvement. On the other hand, sedentarism in MetS patients during 3 years increases their predicted atherosclerotic diseases risk.