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Impact of ischaemia–reperfusion cycles during ischaemic preconditioning on 2000-m rowing ergometer performance

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European Journal of Applied Physiology Aims and scope Submit manuscript

Abstract

Purpose

Although ischaemic preconditioning (IPC), induced by cycles of transient limb ischaemia and reperfusion, seems to improve exercise performance, the optimal duration of ischaemia–reperfusion cycles is not established. The present study investigated the effect of ischaemia–reperfusion duration within each IPC cycle on performance in a 2000-m rowing ergometer test.

Methods

After incremental and familiarization tests, 16 trained rowers (mean ± SD: age, 24 ± 11 years; weight, 74.1 ± 5.9 kg; \(\dot{V}{\text{O}}_{{\text{2}}}\) peak, 67.2 ± 7.4 mL·kg−1·min−1) were randomly submitted to a 2000-m rowing test preceded by intermittent bilateral cuff inflation of the lower limbs with three cycles of ischaemia–reperfusion, lasting 5 min (IPC-5) or 10 min (IPC-10) at 220 or 20 mmHg (control). Power output, \(\dot{V}{\text{O}}_{{\text{2}}}\), heart rate, blood lactate concentration, pH, ratings of perceived exertion (RPE), and near-infrared spectroscopy-derived measurements of the vastus lateralis muscle were continuously recorded.

Results

No differences among treatments were found in the 2000-m test (control: 424 ± 17; IPC-5: 425 ± 16; IPC-10: 424 ± 17 s; P = 0.772). IPC-10 reduced the tissue saturation index and oxy-haemoglobin concentration during exercise compared with control. The power output during the last 100-m segment was significantly lower with IPC-10. The IPC treatments increased the heart rate over the first 500 m and decreased the pH after exercise. No alterations were observed in \(\dot{V}{\text{O}}_{{\text{2}}}\), blood lactate, or RPE among the trials.

Conclusion

In conclusion, IPC does not improve the 2000-m rowing ergometer performance of trained athletes regardless of the length of ischaemia–reperfusion cycles.

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Abbreviations

La:

Blood lactate concentration

O2Hb:

Oxy-haemoglobin concentration

HHb:

Deoxy-haemoglobin concentrations

AOD:

Accumulated oxygen deficit

CTRL:

Control

HR:

Heart rate

HRpeak:

Peak heart rate

LT:

Lactate threshold

NIRS:

Near-infrared spectroscopy

IPC:

Ischaemic preconditioning

IPC-5:

Ischaemic preconditioning with cycles of 5-min ischaemia–reperfusion

IPC-10:

Ischaemic preconditioning with cycles of 10-min ischaemia–reperfusion

RPE:

Ratings of perceived exertion

TSI:

Tissue saturation index

\(\dot{V}{\text{O}}_{{\text{2}}}\) :

Pulmonary oxygen uptake

\(\dot{V}{\text{O}}_{{\text{2}}}\)max:

Maximal oxygen uptake

\(\dot{V}{\text{O}}_{{\text{2}}}\)peak:

Peak oxygen uptake

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Acknowledgements

This work was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) (research grant number: 487610/2013-0) and Fundação de Amparo a Pesquisa e Inovação do Estado de Santa Catarina (FAPESC). The authors would like to acknowledge Clube Náutico Francisco Martinelli, Clube de Regatas Aldo Luz and Clube Náutico Riachuelo for their contribution. We would also like to recognize the following coaches for their contribution to the project: Douglas Oliveira, Bernard’Augusto Ferrazza Dias, Eduardo Gomes de Azevedo Filho, and Rudemar Brizola de Quadros.

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Authors and Affiliations

Authors

Contributions

TT, RAA, RSOC and FC conceived and designed research. TT, RAA, FDL, AFS, FDL and JAGR conducted experiments. RSOC, KLP and FC contributed analytical tools. TT, RAA, RSOC and KLP analyzed data. TT, RAA, RSOC, JAGR, AFS, FDL and FC wrote the manuscript. All authors read and approved the manuscript.

Corresponding author

Correspondence to Tiago Turnes.

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Conflict of interest

The authors declare that have no conflict of interest. The results of the current study do not constitute endorsement of the product by the authors or the journal.

Additional information

Communicated by Massimo Pagani.

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Turnes, T., de Aguiar, R.A., de Oliveira Cruz, R.S. et al. Impact of ischaemia–reperfusion cycles during ischaemic preconditioning on 2000-m rowing ergometer performance. Eur J Appl Physiol 118, 1599–1607 (2018). https://doi.org/10.1007/s00421-018-3891-2

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  • DOI: https://doi.org/10.1007/s00421-018-3891-2

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