Nicholson et al. 1919 Nicholson CK, Lambert JP, Chow CW, Lefer DJ, Calvert JW. Chronic exercise downregulates myocardial myoglobin and attenuates nitrite reductase capacity during ischemia-reperfusion. J Mol Cell Cardiol. 2013;64:1-10./2013 |
Running wheel 4 weeks |
Exe: exercise NO2: supplemented nitrite Exe + N02 Sed: sedentary |
Infarcted area and troponin-1: Sed > Exe = Exe + NO2 > NO2 Ejection fraction: Sed < Exe = Exe + NO2 < NO2 Myoglobin and NFAT: Sed = NO2 > Exe = Exe + NO2
|
Exercise decreases cardiac myoglobin levels by inhibiting the calcineurin-NFAT pathway. Moderate exercise-induced cardioprotection is due to diminished ability to reduce nitrite to NO. |
Akita et al. 2020 Akita Y, Otani H, Matsuhisa S, Kyoi S, Enoki C, Hattori R, et al. Exercise-induced activation of cardiac sympathetic nerve triggers cardioprotection via redox-sensitive activation of eNOS and upregulation of iNOS. Am J Physiol Heart Circ Physiol. 2007;292(5):H2051-9./2007 |
7 consecutive days 60 min/session 60%-70% VO2max
|
Exe: exercise Wild: control Phenol: sympathetic ablation Antioxidant supplemented eNOS(−/−): eNOS knockout 1400W: iNOS blockade iNOS(−/−): iNOS knockout |
Infarcted area: Exe < other groups eNOS and iNOS activity: Exe > other groupsOxidative stress: > in Exe andeNOS(−/−)
|
Exercise stimulates cardiac sympathetic innervation, causing eNOS activation with consequent iNOS elevation, which acts as a mediator in late cardioprotection. |
Hajnal et al. 1111 Hajnal A, Nagy O, Litvai A, Papp J, Parratt JR, Vegh A. Nitric oxide involvement in the delayed antiarrhythmic effect of treadmill exercise in dogs. Life sci. 2005;77(16):1960-71./2005 |
1 session 21 min Remaining not reported |
CT: control L-NAME CT: eNOS blockade AEST CT: iNOS blockade Exe: exercise Exe + L-NAME Exe + AEST |
Arrhythmias: less frequent only in ExeInfarcted area: similar among all groups |
NO acts as a catalyst and mediator in exercise-induced late protection against IR injury. |
Babai et al. 1212 Babai L, Szigeti Z, Parratt JR, Vegh A. Delayed cardioprotective effects of exercise in dogs are aminoguanidine sensitive: possible involvement of nitric oxide. Clin Sci (Lond). 2002;102(4):435-45./2012 |
1 session 21 min |
CT: control without exercise CT + Phe: phenylephrine CT + AG: iNOS blockade Exe 24 h: 24 h after exercise Exe 48 h: 48 h after exercise Exe 24 h + AG: iNOS blockade 24 h after exercise |
Baroreflex sensitivity: Exe 24 h and 48 h > other groups Survival: Exe 24 h: 70% and CT: 9% |
Exercise-induced cardioprotection is mediated by NO because this effect is abolished by aminoguanidine and iNOS activity increases 24 h after exercise. |
Farah et al. 2121 Farah C, Kleindienst A, Bolea G, Meyer G, Gayrard S, Geny B, et al. Exercise-induced cardioprotection: a role for eNOS uncoupling and NO metabolites.Basic Res Cardiol. 2013;108(6):389./2013 |
5 weeks 5 days/week 45 min/session 70% VO2max25m/min |
CT: control Exe: exercise Exe + L-NAME: eNOS blockade Exe + L-NIO: more specific eNOS blockade Exe + BH4: NO donor |
Nitrite and GMPc levels: similar between groups eNOS function: Exe and BH4 > other groupsInfarcted area: Exe < other groups Oxidative stress: Exe > other groups |
Exercise results in increased antioxidant capacity, which prevents an excessive synthesis of NO, limiting its binding to O2and the consequent formation of peroxynitrite (highly cytotoxic). |
Frasier et al. 2222 Frasier CR, Moukdar F, Patel HD, Sloan RC, Stewart LM, Alleman RJ, et al. Redox-dependent increases in glutathione reductase and exercise preconditioning: role of NADPH oxidase and mitochondria. Cardiovasc Res. 2013;98(1):47-55./2013 |
10 consecutive days 60 min/session 15’ at 15 m/min, 30’ at 30 m/min, and 15’ at 15 m/min |
Sed: sedentary Exe: exercise BCNU + Exe: inhibited glutathione reductase Vas2870 + Exe: inhibited NADPH oxidase |
Infarcted area and arrhythmias: Exe < other groups Antioxidant activity: Exe > other groups |
Adaptive signaling of exercise-induced cardioprotection is triggered by EROS, which increases glutathione reductase activity. |
Lee et al. 2323 Lee Y, Min K, Talbert EE, Kavazis AN, Smuder AJ, Willis WT, et al. Exercise protects cardiac mitochondria against ischemia-reperfusion injury. Med Sci Sports Exerc. 2012;44(3):397-405./2012 |
5 consecutive days 60 min/session 70% VO2max30m/min |
CP: sedentary without IR CIR: sedentary with IR EP: exercise without IR EIR: exercise with IR |
Proapoptotic proteins and EROS: CIR > other groups Functional parameters: CP = EP > EIR > CIR Respiratory function: EIR = CP = EP |
Cardioprotection is partially mediated by beneficial adaptations in mitochondrial phenotype, increasing their resistance to the oxidative damage due to IR injury. |
Kavazis et al. 2424 Kavazis AN, McClung JM, Hood DA, Powers SK. Exercise induces a cardiac mitochondrial phenotype that resists apoptotic stimuli. Am J Physiol Heart Circ Physiol, 2008;294(2):H928-35./2008 |
5 consecutive days 60 min/session 30 m/min |
Sed: sedentary Extr: trained |
Antioxidant enzymes and mitochondrial function: ExTr > Sed Expression of proapoptotic proteins: Sed > ExTr |
Exercise induces mitochondrial adaptations that contribute to cardioprotection. |
French et al. 1313 French JP, Hamilton KL, Quindry JC, Lee Y, Upchurch PA, Powers SK. Exercise-induced protection against myocardial apoptosis and necrosis: MnSOD, calcium-handling proteins, and calpain. Faseb J. 2008;22(8):2862-71./2008 |
3 consecutive days 60 min/session 30 m/min |
C: sedentary T: trainedT-AS: trained with anti-MnSOD treatment T-M: trained with sham anti-MnSOD treatment |
MnSOD: T and T-M > T-AS = C Catalase and GPX: similar among groupsInfarcted area and apoptosis: C > T-AS > T = T-M |
Exercise increases the activity of antioxidant enzymes (SOD) that promote cardioprotection by attenuating necrosis/apoptosis |
Lennon et al. 1616 Lennon SL, Quindry JC, Hamilton KL, French JP, Hughes J, Mehta JL, et al. Elevated MnSOD is not required for exercise-induced cardioprotection against myocardial stunning. Am J Physiol Heart Circ Physiol. 2004;287(2):H975-80./2004 |
3 consecutive days 60 min/session 30 m/min |
S-C: sedentary control E-C: trained without treatment E-AS: trained with anti-MnSOD treatment E-MM: trained with sham anti-MnSOD treatment |
MnSOD: E-C = E-MM > E-AS = S-C Antioxidant activity: catalase > in E groupsDouble product: S-C < other groups |
Prevention of exercise-induced elevation of an antioxidant enzyme (MnSOD) does not abolish cardioprotection. |
Hamilton et al. 1414 Hamilton KL, Staib JL, Phillips T, Hess A, Lennon SL, Powers SK. Exercise, antioxidants, and HSP72: protection against myocardial ischemia/reperfusion. Free radic Biol Med. 2003;34(7):800-9./2003 |
5 consecutive days 60 min/session 30 m/min |
Untrained control (1) Untrained and antioxidant diet (2) Trained and antioxidant diet (3) Trained and antioxidant diet (4) |
Infarcted area: 1 > 2 = 3 = 4 Antioxidant activity: 1 = 3 < 2 = 4 HSP72/73: 3 > 1 = 2 = 4 Intraventricular pressure: 4 > 3 > 2 > 1 |
Exercise and use of antioxidants can promote cardioprotection independently and the combination of these two strategies does not interfere in the response. |
Hamilton etal. 2525 Hamilton KL, Powers SK, Sugiura T, Kim S, Lennon S, Tumer N, et al. Short-term exercise training can improve myocardial tolerance to I/R without elevation in heat shock proteins. Am J Physiol Heart Circ Physiol. 2001;281(3):H1346-52./2001 |
3-5 days 60 min/session70% VO2max 30 m/min |
C: control E-cold: exercised at 4°C E-warm: exercised at 25°C |
Intraventricular pressure and MnSOD: E-cold = E-warm > C HSPs: E-warm > E-cold = C GPx: E-cold > E-warm = C |
The protection is not dependent on increased myocardial HSP levels [Remark 1] but rather on increased myocardial antioxidant defense. |
Yamashita et al. 1515 Yamashita N, Hoshida S, Otsu K, Asahi M, Kuzuya T, Hori M. Exercise provides direct biphasic cardioprotection via manganese superoxide dismutase activation. J Exp Med. 1999;189(11):1699-706./1999 |
1 session 25-30 min 27-30 m/min |
C: controlEx: exercised (0.5h, 3 h, 24 h, 36 h, 48 h, 60h, and 72 h after exercise) |
Infarcted area: C = 3 h = 24 h = 72 h > 0.5 h = 36 h = 48 h = 60 h MnSOD activity: 0.5 h = 48 h > other groupsExpression of MnSOD: 48 h > other groups |
The exercise-induced production of EROS, TNF-a, and IL-ip results in MnSOD activation, which plays an important role in biphasic cardioprotection against IR injury. |
Esposito et al. 2626 Esposito F, Ronchi R, Milano G, Margonato V, Di Tullio S, Marini M, et al. Myocardial tolerance to ischemia-reperfusion injury, training intensity and cessation. Eur J Appl Physiol. 2011;111(5):859-68./2011 |
10 weeks 3 days/week 60 min/session 60% or 80% VO2max
|
UNT: untrained Low: low-intensity exercise High: high-intensity exercise High-det: untrained after high-intensity exercise |
Infarcted area: High < Low = High-det < UNT HSP70 and MnSOD: High > Low > High-det > UNT |
The cardioprotective benefits of exercise are proportional to its intensity and occur via HSPs and antioxidant defense. |
Lennon et al. 2727 Lennon SL, Quindry JC, French JP, Kim S, Mehta JL, Powers SK. Exercise and myocardial tolerance to ischaemia-reperfusion. Acta Physiol Scand.2004; 182(2):161-9./2004 |
3 consecutive days 60 min/session 55% or 75% VO2max
|
C: sedentary control Mod: exercise at 55% VO2maxHigh: exercise at 75% VO2max
|
Cardiac function: High = Mod > C MnSOD: High > Mod = C HSP72: High > Mod > C |
Moderate- and high-intensity exercise promotes similar protection against IR injury. |
Murlasits et al. 2828 Murlasits Z, Lee Y, Powers SK. Short-term exercise does not increase ER stress protein expression in cardiac muscle. Med Sci Sports Exerc. 2007;39(9):1522-8./2007 |
5 consecutive days 60 min/session 70% VO2max
|
C: sedentary control Trained |
Infarcted area: C > Trained HSP72: Trained > C Grp78, Grp94, calreticulin, ATF3, CHOP, Caspase 12, Noxa, Puma: Trained = C |
The cardioprotective effect of short-duration exercise is not associated with the regulation of stress proteins such as HSPs. |
Quindry et al. 2929 Quindry JC, Hamilton KL, French JP, Lee Y, Murlasits Z, Tumer N, et al. Exercise-induced HSP-72 elevation and cardioprotection against infarct and apoptosis. J Appl Physiol (1985). 2007;103(3):1056-62./2007 |
3 consecutive days 60 min/session 30 m/min |
Sed: sedentary W Ex: exercised at 22°C C Ex: exercised at 8°C |
Infarcted area and Tunnel: Sed > W Ex = C Ex HSP72: W Ex > C Ex = Sed |
The exercise-induced increase in HSP72 levels is not essential for protection against infarction and apoptosis. |
Starnes et al. 3030 Starnes JW, Taylor RP, Ciccolo JT. Habitual low-intensity exercise does not protect against myocardial dysfunction after ischemia in rats. Eur J Cardiovasc Prev Rehabil. 2005;12(2):169-74./2005 |
16 weeks 5 days/week 40 min/session 55%-60% VO2max
|
Sed: sedentary RUN: exercised |
Cardiac function: Sed = RUN HSP70: RUN > Sed |
Exercise at 55%-60% of VO2max induces an increase in HSP70 levels, but this increase is below the threshold for inducing cardioprotection. |
Moran et al. 3131 Morán M, Blazquez I, Saborido A, Megias A. Antioxidants and ecto-5'-nucleotidase are not involved in the training-induced cardioprotection against ischaemia-reperfusion injury. Exp Physiol. 2005;90(4):507-17./2005 |
24 weeks 5 days/week45 min/session25 m/min |
Sed: sedentary Tr: trained |
HSP72: Tr > Sed Oxidative stress and adenosine: Tr = SedMnSOD and GR: Tr < Sed |
Exercise-induced cardioprotection occurs via increase in HSP72 levels and not through the increase of antioxidant or adenosine levels. |
Lennon et al. 3232 Lennon SL, Quindry J, Hamilton KL, French J, Staib J, Mehta JL, et al. Loss of exercise-induced cardioprotection after cessation of exercise. J Appl Physiol (1985). 2004;96(4):1299-305./2004 |
3 consecutive days 60 min/session 70% VO2 max
|
CT: control 1, 3, 9, and 18 days after exercise |
Catalase and HSP72: 1 day = 3 days > other groups Cardiac function: 1 day = 3 days = 9 days > 18 days = CT |
Cardioprotection is abolished 18 days after the end of exercise and is not related to HSP72 and catalase. |
Harris et al. 3333 Harris MB, Starnes JW. Effects of body temperature during exercise training on myocardial adaptations. Am J Physiol Heart Circ Physiol. 2001;280(5):H2271-80./2001 |
3, 6, and 9 weeks 5 days/week 60 min/session 23°C or 8°C |
Sed: sedentary 3WK, 6WK, and 9WK: exercised for 3/6/9 weeks at 23°C 3WKC, 6WKC, and 9WKC: exercised for 3/6/9 weeks at 8°C |
HSP70: 3WK = 6WK = 9WK > CT = 3WKC = 6WKC = 9WKC Cardiac function: 9WK > SED = 9WKC SOD: 9WK = 9WKC |
Exercise-induced cardioprotection appears to be due to the increase in HSP70 levels. |
Taylor et al. 1010 Taylor RP, Harris MB, Starnes JW. Acute exercise can improve cardioprotection without increasing heat shock protein content. Am J Physiol Heart Circ Physiol. 1999;276(3 Pt 2):H1098-102./1999 |
1 or 3 days, 100 min/ day, 20 m/min at 23°C 1 day, 100 min/day, 20 m/min at 8°C |
CTRL: sedentary control HS: sedentary heated to 42°C 1DR and 3DR: exercised for 1/3 days at 23°C1CR: exercised for 1 day at 8°C |
Cardiac function: CTRL < other groupsHSP72: 1DR = 3DR = HS > 1CR = CTRL |
Acute exercise can produce cardioprotective response without increase in HSP72 levels. |
Quindry et al. 3434 Quindry JC, Miller L, McGinnis G, Kliszczewicz B, Irwin JM, Landram M, et al. Ischemia reperfusion injury, KATP channels, and exercise-induced cardioprotection against apoptosis. J Appl Physiol (1985). 2012;113(3):498-506./2012 |
3 days 60 min/session70% VO2max30 m/min |
Sed: sedentary control Exe: exercised Ex5HD: exercised with mitochondrial KATP blockade ExHMR: exercised with sarcolemmal KATP blockade |
Infarcted area: Exe = Ex5HD < ExHMR = Sed MnSOD: Sed < other groups |
Sarcolemmal KATP channels are more important than mitochondrial KATP channels in the prevention of tissue death after exercise. |
Quindry et al. 3535 Quindry JC, Schreiber L, Hosick P, Wrieden J, Irwin JM, Hoyt E. Mitochondrial KATP channel inhibition blunts arrhythmia protection in ischemic exercised hearts. Am J Physiol Heart Circ Physiol. 2010;299(1):H175-83./2010 |
3 consecutive days 60 min/session 30 m/min |
Sed: sedentary control Exe: exercised Ex5HD: exercised with mitochondrial KATP blockade ExHMR1098: exercised with sarcolemmal KATP blockade |
Arrhythmias: Ex = ExHMR1098 < Ex5HD = Sed MnSOD: Sed < other groups |
Mitochondrial KATP channels promote antiarrhythmic protection as part of exercise-induced cardioprotection. |
Brown et al. 3636 Brown DA, Chicco AJ, Jew KN, Johnson MS, Lynch JM, Watson PA, et al. Cardioprotection afforded by chronic exercise is mediated by the sarcolemmal, and not the mitochondrial, isoform of the KATP channel in the rat. J Physiol. 2005;569(Pt 3):913-24./2005 |
12 weeks Remaining not informed |
Sed: sedentary Tr: trained 5HD: exercised with mitochondrial KATP blockadeHMR1098: exercised with sarcolemmal KATP blockade |
Infarcted area: HMR1098 > other groupsCalcium content: 5HD > other groups Blood pressure: 5HD < other groups |
Exercise increases the expression of sarcolemmal KATP channels, which when blocked, annuls the cardioprotective benefits of exercise. |
Michelsen et al. 3737 Michelsen MM, Stottrup NB, Schmidt MR, Lofgren B, Jensen RV, Tropak M, et al. Exercise-induced cardioprotection is mediated by a bloodborne, transferable factor. Basic Res Cardiol.2012;107(3):260./2012 |
Bicycle 1 session 25 min 4x 2’ 400W + 3’ 250W |
ExPC: exercise-induced preconditioning ExPC + N: exercise-induced preconditioning + opioid blockade rIPC: Remote ischemic preconditioning rIPC + N: Remote ischemic preconditioning + opioid blockade |
Infarcted area: rIPC < rIPC + N / ExPC < ExPC + N Blood pressure: rIPC > rIPC + N = ExPC > ExPC + N |
Exercise remotely preconditions the heart through the opioid receptor activation-dependent humoral effector. |
Galvao et al. 3838 Galvão TF, Matos KC, Brum PC, Negrao CE, Luz PL, Chagas AC. Cardioprotection conferred by exercise training is blunted by blockade of the opioid system. Clinics (Sao Paulo). 2011;66(1):151-7./2011 |
12 weeks 5 days/week 60 min/sessionn60% VO2max
|
C: control ET: physical training M: morphine IR: ischemia and reperfusion M + N: opioid blockade ET + M ET + N |
Infarcted area: C, M + N, and ET + N > other groups Intraventricular pressure and capillary density: similar between groups |
The chronic effect of exercise in reducing the infarcted area is due to the activation of opioid receptors rather than to increased myocardial perfusion. |
Dickson et al. 99 Dickson EW, Hogrefe CP, Ludwig PS, Ackermann LW, Stoll LL, Denning GM. Exercise enhances myocardial ischemic tolerance via an opioid receptor-dependent mechanism. Am J Physiol Heart Circ Physiol.2008;294(1):H402-8./2008 |
1 session 25 min 25 m/min |
Exe: exercise Exe N: exercise with opioid blockade |
Intraventricular pressure: equal between groups Infarcted area: Exe < Exe + N |
Cardioprotection is mediated by an opioid receptor-dependent mechanism. |