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Table 4 Correlation study of EMG features and clinical features

From: Muscle activation strategies of people with early-stage Parkinson’s during walking

Clinical variables

Scale range

Total CI

Total MI-TA muscle

UPDRS postural stability (Item 3.12)

0–2

 + 0.620 (0.054)

 + 0.677(0.023)

UPDRS rigidity (Item 3.3)

0–5

 + 0.674 (0.011)

 + 0.810 (0.033)

UPDRS gait (Item 3.10)

0–3

 + 0.759 (0.002)

 + 0.820 (0.002)

UPDRS body bradykinesia (Item 3.14)

0–3

 + 0.778 (0.006)

 + 0.625(0.015)

UPDRS PIGD

0–20

 + 0.858 (0.018)

 + 0.788(0.012)

Year of disease

1–10

 + 0.554 (0.003)

 + 0.687 (0.07)

H & Y scale

1–3

 + 0.347 (0.241)

 + 0.578 (0.061)

UPDRS III

9–41

 + 0.388 (0.157)

 + 0.738 (0.017)

  1. The ρ (p-value)—Spearman correlation coefficients (ρ) is indicated with level of significance (p). The acronyms used in the table—UPDRS III—Unified Parkinson’s Disease Rating Scale, UPDRS PIGD—UPDRS III Postural Instability and Gait Disturbance, H & Y Scale—Hoehn and Yahr scale