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Exercise lowers blood pressure in university professors during subsequent teaching and sleeping hours |
Ribeiro F, Campbell CS, Mendes G, Arsa G, Moreira SR, da Silva FM, Prestes J, da Costa Sotero R, Simoes HG |
International Journal of General Medicine 2011 Oct 19;4:711-716 |
clinical trial |
3/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
BACKGROUND: University professors are subjected to psychological stress that contributes to blood pressure (BP) reactivity and development of hypertension. The purpose of this study was to investigate the effects of exercise on BP in university professors during teaching and sleeping hours. METHODS: Twelve normotensive professors (42.2 +/- 10.8 years, 74.2 +/- 11.2 kg, 172.8 +/- 10.4 cm, 20.1% +/- 6.7% body fat) randomly underwent control (CONT) and exercise (EX30) sessions before initiating their daily activities. EX30 consisted of 30 minutes of cycling at 80% to 85% of heart rate reserve. Ambulatory BP was monitored for 24 hours following both sessions. RESULTS: BP increased in comparison with pre-session resting values during teaching after CONT (p < 0.05) but not after EX30. Systolic, diastolic, and mean arterial BP showed a more pronounced nocturnal dip following EX30 (approximately -14.7, -12.7, and -9.6 mmHg, respectively) when compared with CONT (approximately -6, -5 and -3 mmHg). CONCLUSION: Exercise induced a BP reduction in university professors, with the main effects being observed during subsequent teaching and sleeping hours.
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