Fig. 5From: A method for measuring time spent in bradykinesia and dyskinesia in people with Parkinson’s disease using an ambulatory monitorPTB and relationship to hours in bradykinesia. The percent time in bradykinesia (PTB: X axis) is converted to minutes above target (Y axis) considering 9 h per day (from 9am to 6 pm) for PTB ≥ 30% (assuming PTB < 30% is in the control range and equal to zero) using the formula: minutes = (PTB-30) * 7.714Back to article page