Table 1.

Overview of the size of the sample used in the study

	GPS	Accelerometer	Heart rate (HR)
Sample size
No. of participants	283	285	127
No. of minute-level observations	1,611,875	2,651,735	566,092

After merging GPS, accelerometer, and HR data
No. of minute-level observations	336,014
No. of removed observations	2,316,759
No. of participants	126
Final size of the merged dataset	334,976