A-39 Free Communication/Poster - Cardiovascular Wednesday, May 30, 2018, 7: 30 AM - 12: 30 PM Room: CC-Hall B
Changes in Vascular Function of Female University Students at Different Types of Walking
171 Board #12 May 30 9
30 AM - 11
PURPOSE: To reveal effect of different types of walking on vascular function of female university students at the same amount of exercise.
METHODS: Thirty normal weight female university students (age: 20.9±1.5years) participated in the study. They were randomly divided into two groups (IW group and CW group). There were fifteen female students in each group. Each group did exercise at the intensity of 65% heart rate reserve. CW(continuous walking) group walked continuously for 30 minutes without rest. IW(intermittent walking) group had 3-minute rest between two 15-minute walking. The blood pressure, heart rate, pulse wave velocity (PWV) and ankle brachial index (ABI) were determined before exercise. After exercise above indexes were recorded every 5 minutes till 30 minutes.
RESULTS: 30 minutes after intermittent walking, the blood pressure(SBP: 99.8±6.8 vs 104.8±7.5mmHg, DBP: 59.8±6.1 vs 65.3±9.9mmHg) and heart rate(62.1±7.6 vs 68.2±3.9bpm) of IW group decreased significantly compared with pre-exercise(P<0.05). 5 minutes(891.2±86.3 vs 1006.9±71.5cm/s) and 30 minutes (933.4±72.2 vs 1006.9±71.5cm/s) after intermittent walking, PWV of IW group declined significantly compared with pre-exercise(P<0.05). 30 minutes after continuous walking, the blood pressure(SBP: 100.8±4.8 vs 108.4±8.2mmHg, DBP: 59.6±6.1 vs 64.7±5.0mmHg) and heart rate(65.3±11.4 vs 70.3±9.7bpm) of CW group descended significantly compared with pre-exercise(P<0.05). 5 minutes and 30 minutes after continuous walking, PWV(978.1±93.8 vs 1012.5±91.5cm/s) and ABI(0.96±0.09 vs 1.04±0.08) of CW group decreased significantly compared with pre-exercise(P<0.05). 5 minutes after exercise, the SBP(109.0±7.9 vs 116.8±6.1mmHg) and DBP(61.2±6.2 vs 63.4±5.7mmHg) of CW group were significantly lower than those of IW group.
CONCLUSIONS: Both intermittent walking and continuous walking do good to lower blood pressure and heart rate, ameliorate arterial stiffness and improve vascular elasticity of female university students. Continuous walking has better effect on improvement of blood pressure and ankle brachial index compared with intermittent walking, which contribute to reduce risk of lower extremity arterial stenosis. All those improvement are beneficial to prevent cardiovascular disease in early life.© 2018 American College of Sports Medicine