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Correlation between impaired hemodynamic response and cardiopulmonary fitness in middle-aged type 2 diabetes mellitus patients: a case–control study

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Abstract

Purpose

Impaired cardiorespiratory fitness (CRF) is a predictor of mortality in patients with type 2 diabetes mellitus (T2DM). It is still not known how the exercise hemodynamic response correlates with CRF. The purpose was to assess the correlation between hemodynamic changes and CRF in middle-aged patients with T2DM.

Methods

After 1:1 matching by age and sex, 139 T2DM patients and 139 non-T2DM controls who completed the exercise treadmill test were included. Maximal aerobic capacity (VO2max), exercise-induced changes in heart rate (ΔHR), systolic blood pressure (ΔSBP), diastolic blood pressure (ΔDBP), and rate-pressure product (ΔRPP) were measured. HRR1 was calculated as the maximum heart rate minus the heart rate after 1 min of rest.

Results

Compared to the control population, T2DM patients had decreased ΔHR (87 (77, 97) v 93 (84, 104) bpm, p < 0.05), ΔRPP (3833.64 ± 1670.34 v 4381.16 ± 1587.78 bpm∙mmHg, p < 0.05), HRR1 (21 (14, 27) v 21 (17, 27) bpm, p < 0.05), and VO2max (32.76 ± 5.63 v 34.68 ± 5.70 ml/kg/min, p < 0.05). Multiple linear regression analysis showed that ΔHR and HRR1, yielded a positive correlation with VO2max in T2DM patients (β = 0.325, P < 0.001; β = 0.173, P = 0.01).

Conclusion

The presence of impaired hemodynamic response and VO2max in middle-aged T2DM patients and the association of impaired ΔHR, HRR1, and VO2max may indicate a physiological pathway of impaired CRF, and our results support the need for cardiorespiratory screening and individualized treatment of middle-aged T2DM patients.

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Data availability

Due to the privacy of the participants involved in this study, the data sets used and/or analyzed in this study are not publicly available, but can be obtained from the corresponding authors upon reasonable request.

Abbreviations

ANS:

Autonomic Nervous System

ANSI:

Autonomic Nervous System Index

BMI:

Body mass index

CRF:

Cardiorespiratory fitness

CAN:

Cardiac autonomic neuropathy

DBP :

Diastolic blood pressure

HR:

Heart rate

HDL:

High density lipoprotein

HRV:

Heart rate variability

LDL:

Low density lipoprotein

RPP :

Rate-pressure product

SBP:

Systolic blood pressure

T2DM:

Type 2 diabetes mellitus

VO2max :

Maximal aerobic capacity

References

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Acknowledgements

The authors are very grateful to The Second Affiliated Hospital of Fujian University of Traditional Chinese Medicine for their support of the data and to all participants for their contributions.

Funding

This work was supported by the Key Research and Development Project funded by the Ministry of Science and Technology of the People’s Republic of China (Grant Number: 2019YFC1710301).

Author information

Authors and Affiliations

Authors

Contributions

LHY and JH contributed to study design, and data collection and analysis were performed by YX, YNC, and JWQ. The first draft of the manuscript was written by JJX. All authors read and approved the final manuscript.

Corresponding authors

Correspondence to Zhizhen Liu or Jing Tao.

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Conflict of interest

All authors declare that they have no conflict of interest.

Ethical approval

The study was approved by the Ethics Committee of The Second Affiliated Hospital of Fujian University of Traditional Chinese Medicine and the procedures used in this study adhere to the tenets of the Declaration of Helsinki.

Informed consent

All participants provided written informed consent.

Additional information

Communicated by Massimo Pagani.

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Cite this article

Xie, J., Yin, L., Huang, J. et al. Correlation between impaired hemodynamic response and cardiopulmonary fitness in middle-aged type 2 diabetes mellitus patients: a case–control study. Eur J Appl Physiol 122, 2295–2303 (2022). https://doi.org/10.1007/s00421-022-05008-z

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  • DOI: https://doi.org/10.1007/s00421-022-05008-z

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