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Chinese Journal of Brain Diseases and Rehabilitation(Electronic Edition) ›› 2025, Vol. 15 ›› Issue (01): 15-20. doi: 10.3877/cma.j.issn.2095-123X.2025.01.003

• Clinical Researches • Previous Articles     Next Articles

Construction and validation of a cardiorespiratory fitness prediction model for subacute stroke patients based on influencing factors

Zeyan Zhang1, Zhixuan Duan1, Huiqun Wu2, Guodong Wang2, Hua Ling2, Xiaoxia Du1,()   

  1. 1. School of Rehabilitation Medicine, Capital Medical University, Beijing 100068,China
    2. Department of Rehabilitation, Beijing Bo'Ai Hospital, China Rehabilitation Research Center,Beijing 100068, China
  • Received:2024-11-05 Online:2025-02-15 Published:2025-04-15
  • Contact: Xiaoxia Du

Abstract:

Objective

To construct a predictive model of cardiorespiratory fitness (CRF) - peak oxygen uptake (VO2peak) in stroke patients in the subacute phase based on influencing factors and to validate its effectiveness.

Methods

Mild and moderate severity stroke patients who underwent rehabilitation in the Neurorehabilitation Department of Beijing Boai Hospital from October 2023 to June 2024 were selected for prospective study. Based on the results of cardiopulmonary exercise test (CPET),VO2peak≥15 mL/(kg·min) was defined as the good CRF group, and <15 mL/(kg·min) was defined as the poor CRF group. The clinical data of 2 groups were compared, and multifactorial Logistic regression analysis was used to screen the influencing factors of VO2peak in stroke patients. The patients were randomly divided into a training set and an internal test set according to the ratio of 7∶3. The training set was used to construct a prediction model based on Logistic regression, and the prediction effect of the model was verified by the internal test set.

Results

A total of 80 patients were included, including 41 patients in the good CRF group and 39 patients in the poor CRF group, 56 patients in the training set and 24 patients in the internal test set. The lower limb Brunnstrom staging, Fugl-Meyer assessment scale(FMA), modified Barthel index, functional walking ability scale, and 6-min walk test distance comparison,the differences were statistically significant (P<0.05). The results of multifactorial Logistic regression analysis showed that FMA score was an independent influence on VO2peakP=0.038). The constructed prediction model showed good predictive effect in the internal test set, with an area under the receiver operating characteristic curve of 0.745 (95%CI: 0.536-0.954), a sensitivity of 54.5%, and a specificity of 92.3%.

Conclusion

Constructing a prediction model for predicting CRF-VO2peak in stroke patients in the subacute stage based on FMA scores helps to identify patients with low VO2peak early in the clinic and formulate personalized rehabilitation plans.

Key words: Stroke, Cardiorespiratory fitness, Peak oxygen uptake, Fugl-Meyer assessment scale, Prediction model

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