open access

Vol 18, No 2 (2011)
Original articles
Published online: 2011-03-10
Submitted: 2013-01-14
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Role of 12-week resistance training in preserving the heart against ischemia-reperfusion-induced injury

Farhad Ghadiri Soufi, Mohaddeseh Mahmoudi Saber, Rafigheh Ghiassie, Mohsen Alipour
Cardiol J 2011;18(2):140-145.

open access

Vol 18, No 2 (2011)
Original articles
Published online: 2011-03-10
Submitted: 2013-01-14

Abstract


Background: Discovering an effective approach to provide cardioprotection against coronary artery disease has long been sought. We studied the cardioprotective effect of resistance training against ischemia-reperfusion-induced injury.
Methods: Twenty male rats were divided into trained and sedentary groups (n = 10 in each). The rats were exercised in squat-training apparatus (12 repetitions/set, four sets/day and five days/week for 12 weeks). After the last training session, transient regional ischemia of left anterior descending coronary artery (40 min) was followed by 80 min of reperfusion. Coronary flow, left ventricular developed pressure, diastolic pressure and infarct size were measured.
Results: After 35 min of ischemia, coronary flow and developed pressure were higher in trained than untrained groups (10.37 ± 0.96 vs 7.54 ± 0.89 mL/min × g, p < 0.01 for coronary flow and 67.74 ± 3.31 vs 52.39 ± 4.28 mm Hg, p < 0.01 for developed pressure) and this difference persisted until 50 min of reperfusion (10.59 ± 0.88 vs 7.71 ± 0.73 mL/ /min × g, p < 0.01 for coronary flow and 58.12 ± 4.07 vs 39.56 ± 3.79 mm Hg, p < 0.01 for developed pressure). Diastolic pressure was significantly lower from 35 min of ischemia (11.51 ± 5.37 vs 24.53 ± 5.44 mm Hg, p < 0.05) through 35 min of reperfusion in trained rather than sedentary rats (30.62 ± 3.19 vs 43 ± 7.11 mm Hg, p < 0.01). Resistance exercise training reduced the infarct size statistically in trained rats as compared with sedentary animals (39.32 ± 4.09 vs 29.36 ± 4.17 percentage of zone at risk, p < 0.05).
Conclusions: These results show that chronic resistance exercise provides cardioprotection against myocardial injuries. (Cardiol J 2011; 18; 2: 140-145)

Abstract


Background: Discovering an effective approach to provide cardioprotection against coronary artery disease has long been sought. We studied the cardioprotective effect of resistance training against ischemia-reperfusion-induced injury.
Methods: Twenty male rats were divided into trained and sedentary groups (n = 10 in each). The rats were exercised in squat-training apparatus (12 repetitions/set, four sets/day and five days/week for 12 weeks). After the last training session, transient regional ischemia of left anterior descending coronary artery (40 min) was followed by 80 min of reperfusion. Coronary flow, left ventricular developed pressure, diastolic pressure and infarct size were measured.
Results: After 35 min of ischemia, coronary flow and developed pressure were higher in trained than untrained groups (10.37 ± 0.96 vs 7.54 ± 0.89 mL/min × g, p < 0.01 for coronary flow and 67.74 ± 3.31 vs 52.39 ± 4.28 mm Hg, p < 0.01 for developed pressure) and this difference persisted until 50 min of reperfusion (10.59 ± 0.88 vs 7.71 ± 0.73 mL/ /min × g, p < 0.01 for coronary flow and 58.12 ± 4.07 vs 39.56 ± 3.79 mm Hg, p < 0.01 for developed pressure). Diastolic pressure was significantly lower from 35 min of ischemia (11.51 ± 5.37 vs 24.53 ± 5.44 mm Hg, p < 0.05) through 35 min of reperfusion in trained rather than sedentary rats (30.62 ± 3.19 vs 43 ± 7.11 mm Hg, p < 0.01). Resistance exercise training reduced the infarct size statistically in trained rats as compared with sedentary animals (39.32 ± 4.09 vs 29.36 ± 4.17 percentage of zone at risk, p < 0.05).
Conclusions: These results show that chronic resistance exercise provides cardioprotection against myocardial injuries. (Cardiol J 2011; 18; 2: 140-145)
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Keywords

exercise; heart; infarction; ischemia; reperfusion

About this article
Title

Role of 12-week resistance training in preserving the heart against ischemia-reperfusion-induced injury

Journal

Cardiology Journal

Issue

Vol 18, No 2 (2011)

Pages

140-145

Published online

2011-03-10

Bibliographic record

Cardiol J 2011;18(2):140-145.

Keywords

exercise
heart
infarction
ischemia
reperfusion

Authors

Farhad Ghadiri Soufi
Mohaddeseh Mahmoudi Saber
Rafigheh Ghiassie
Mohsen Alipour

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