دورية أكاديمية
Hemodynamic effects of aerobic vs resistance exercise.
| العنوان: | Hemodynamic effects of aerobic vs resistance exercise. |
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| المؤلفون: | Copeland SR; Department of Medicine, University of Tennessee, Memphis 38163, USA., Mills MC, Lerner JL, Crizer MF, Thompson CW, Sullivan JM |
| المصدر: | Journal of human hypertension [J Hum Hypertens] 1996 Nov; Vol. 10 (11), pp. 747-53. |
| نوع المنشور: | Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
| اللغة: | English |
| بيانات الدورية: | Publisher: Nature Publishing Group Country of Publication: England NLM ID: 8811625 Publication Model: Print Cited Medium: Print ISSN: 0950-9240 (Print) Linking ISSN: 09509240 NLM ISO Abbreviation: J Hum Hypertens Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: <2003->: London : Nature Publishing Group Original Publication: Houndmills, Basingstoke, Hampshire, UK : Scientific & Medical, Macmillan Press, c1987- |
| مواضيع طبية MeSH: | Exercise/*physiology , Hemodynamics/*physiology , Vascular Resistance/*physiology, Adult ; Forearm ; Humans ; Isometric Contraction/physiology ; Isotonic Contraction/physiology ; Male ; Rest/physiology ; Weight Lifting/physiology |
| مستخلص: | Previous studies suggest that aerobic exercise lowers blood pressure (BP), while isometric exercise increases BP, at least transiently. The purpose of this study was to examine the hemodynamic effect of a 6-week training period of aerobic exercise or weight training. Twenty deconditioned healthy males ages 18-36, self-selected a training regimen. The aerobic group exercised 30 min/day, 4 times each week to achieve 60-80% maximal heart rate. The resistance group lifted weights at 65-80% maximal voluntary contraction; 3-4 sets of 8-12 repetitions; 3 day/week using large muscle groups. Hemodynamic measurements of heart rate, BP, venous capacitance, forearm blood flow, and vascular resistance were made at baseline and week 6 by plethysmography and analyzed by 2-way ANOVA. The groups showed no differences in baseline characteristics. A training effect was confirmed by a decrease in resting heart rate in the aerobic group (71.5 +/- 4.4 to 64.5 +/- 3.7, beats per minute, P = 0.004), and an increase in total work capacity in the weight lifting group (6231 vs 7508, P = 0.01). Forearm blood flow increased similarly in both groups, averaging 17% (3.5 +/- 0.2 vs 4.2 +/- 0.2 ml 100 g/min, P = 0.03), while forearm vascular resistance fell 19% (28.8 +/- 1.7 vs 24.3 +/- 1.7 mm Hg/ml/min 100 g, P = 0.08). The main differences between the groups after training was found in their response to isometric stress (1/3 maximal handgrip). The weight-lifting group had a greater increase of forearm blood flow and venous capacitance, less increase in systolic BP (SBP) and a greater fall of forearm vascular resistance, (P < 0.05) while the aerobic group had less increase in SBP and heart rate (P < 0.04) but no significant change of forearm hemodynamics. We conclude that both aerobic and repetitive weight programs have short term favorable effects on resting forearm BP and resistance. The exercise programs differ in altering the individual's physiologic response to subsequent isometric stress. However, exercise training of longer duration or greater intensity or frequency could alter these results. |
| معلومات مُعتمدة: | 5-MOI-RR00211 United States RR NCRR NIH HHS; HL 21523 United States HL NHLBI NIH HHS; T35K07405 United States PHS HHS |
| تواريخ الأحداث: | Date Created: 19961101 Date Completed: 19970401 Latest Revision: 20071115 |
| رمز التحديث: | 20221213 |
| PMID: | 9004105 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 0950-9240 |
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