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Ischemic preconditioning has no effect on maximal arm cycling exercise in women

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European Journal of Applied Physiology Aims and scope Submit manuscript

Abstract

Purpose

We investigated the effect of ischemic preconditioning (IPC) on performance of a 3 min maximal effort arm ergometer test in young women.

Methods

Twenty healthy women (23.1 (SD 3.3) years) performed a 3 min maximal effort arm cycling exercise, preceded by IPC on both arms or SHAM in a counterbalanced randomized crossover design. Both blood flow (via high resolution ultrasound; n = 17) and muscle oxygenation/deoxygenation (via near infrared spectroscopy; n = 5) were measured throughout the IPC/SHAM. Performance and perceptual/physiological (i.e., heart rate, blood lactate, rating of perceived exertion, and triceps brachialis oxygenation) parameters were recorded during the exercise test.

Results

Occlusion during IPC completely blocked brachial artery blood flow, decreased oxygenated hemoglobin/myoglobin (Δ[oxy(Hb + Mb)]), and increased deoxygenated Hb/Mb (Δ[deoxy(Hb + Mb)]). There were no differences (P > 0.797) in performance (peak, mean, and end power output) or in any perceptual/physiological variables during the 3 min all-out test between IPC/SHAM. During exercise, Δ[oxy(Hb + Mb)] initially decreased with no differences (P ≥ 0.296) between conditions and returned towards baseline by the completion of the test while Δ[deoxy(Hb + Mb)] increased with no differences between conditions and remained elevated until completion of the test (P ≥ 0.755).

Conclusions

We verified the successful application of IPC via blood flow and NIRS measures but found no effects on performance of a 3 min maximal effort arm cranking test in young women.

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Abbreviations

ANOVA:

Analysis of variance

AU:

Arbitrary units

BP:

Blood pressure

HR:

Heart rate

IPC:

Ischemic preconditioning

[La]:

Blood lactate concentration

NIRS:

Near-infrared spectroscopy

Δ[oxy(Hb+Mb)]:

Change in oxygenated hemoglobin and myoglobin

Δ[deoxy(Hb+Mb)]:

Change in deoxygenated hemoglobin and myoglobin

RPE:

Rating of perceived exertion

RPM:

Revolutions per minute

SHAM:

Placebo treatment

SBP:

Systolic blood pressure

References

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Acknowledgments

Dr. Mota was supported by the US Department of State—Fulbright Program. We sincerely appreciate the time and effort provided by our participants. We also thank the following for their valuable contributions: Steven B. Gladden (for technical assistance with counting revolutions on the arm crank ergometer), C. Brooks Mobley (for assistance with instrumenting the arm crank ergometer), Julia Kimbrough and Hillary Schulman (for assistance with the recruitment of participants and data collection), Angelique N. Moore (for assistance with the blood flow measurements), and Dr. Matthew W. Miller for statistical advice.

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Authors and Affiliations

Authors

Contributions

GRM, ANK, and LBG conceived and designed research. GRM, ZBR, JSM, and JRM conducted experiments. DDP and ANK contributed new reagents or analytical tools. GRM, ZBR, JSM, JRM, and LBG analyzed data. GRM, ANK, and LBG wrote the manuscript. All authors read and approved the manuscript.

Corresponding author

Correspondence to Gustavo R. Mota.

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Conflict of interest

All authors declare that they have no conflict of interest.

Additional information

Communicated by Michael Lindinger.

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Mota, G.R., Rightmire, Z.B., Martin, J.S. et al. Ischemic preconditioning has no effect on maximal arm cycling exercise in women. Eur J Appl Physiol 120, 369–380 (2020). https://doi.org/10.1007/s00421-019-04281-9

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  • DOI: https://doi.org/10.1007/s00421-019-04281-9

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