Akbari Z, Sedaghat Z, Esmaili-Dehaj M, Karamean E, Zarei N, Keshavarzi A et al . Effects of remote limb ischemic preconditioning on pulmonary function tests and maximal oxygen uptake. Physiol Pharmacol 2014; 18 (3) :315-326
URL:
http://ppj.phypha.ir/article-1-1021-en.html
Abstract: (5960 Views)
Introduction: Ischemic preconditioning (IPC) protects skeletal muscles from ischemia-reperfusion injury and
improves physical exercise performance. The purpose of the present study was to determine whether application of
remote ischemic preconditioning (RIPC) of upper limbs would affect the pulmonary function tests and the maximal
oxygen consumption (VO2max).
Methods: Twenty healthy trained and untrained subjects were examined under 2 experimental conditions of control
and RIPC groups. All individuals attended the laboratory twice, once as the control group and the next time as the RIPC
group in a counterbalanced order. These visits were at least 1 week apart and were taken place at the same time of the
day. RIPC was induced using a protocol of three cycles of 5 min ischemia/5 min reperfusion in both arms. Pulmonary
function tests and oxygen saturation (SPO2) were measured before and after the RIPC protocol. VO2max was estimated by
the Queen Step Test.
Results: Analysis of data revealed that RIPC increased FEV1, FEF25-75 and MVV tests in the untrained group,
while it increased FVC, FEV1, FEF25-75 and MVV tests in the trained group. Preconditioning also increased VO2max
and the maximal heart rate in trained subjects.
Conclusion: These results show that pre-exercise induction of limb ischemic preconditioning improves pulmonary
function tests and VO2max especially in trained subjects. Thus, this technique may be appropriate for the enhancement of
exercise performance in athletes during competitions and also for improving the respiratory function in different
pulmonary diseases in the near future.