Table 1. Participants’ Characteristics.

Participant	Item	Frequencies or means (Standard Deviations (SD))
People Living with Dementia	Gender
	Male	13
	Female	12
	Mean age (SD)	77.60 (7.67)
	Relationship status
	Married / Civil partnership	21
	Single	2
	Divorced	1
	Widowed	1
	Current living situation
	Living with family/friends	23
	Alone	2
	Level of education
	None	1
	Primary	1
	Secondary	15
	Higher education college / university	6
	Further education / professional qualification	2
	Ethnicity
	White	25
	Dementia type
	Alzheimer’s	18
	Mixed Alzheimer’s & Vascular	6
	Other (Frontal Lobe)	1
	Mean number of months diagnosed with dementia (SD)	20.96 (21.7)
	Other chronic conditions
	Yes	19
	No	6
	Existing injuries or health injuries to be considered to do Tai Chi
	Yes	5
	No	20
	Use of walking aid
	Yes	7
	No	18
	Mean prescribed daily medications (SD)	5.52 (3.62)
	Falls in the last year
	Yes	10
	No	15
	Falls in the last month
	Yes	4
	No	21
	Frequency of moderate Physical Activity (PA) practice
	Everyday	13
	3 times per week	3
	2 times per week	1
	Weekly	1
	Rarely/never	7
	Frequency of vigorous PA practice
	Everyday	1
	Weekly	2
	Rarely/never	22
	Previous experience practicing Tai Chi
	Yes	4
	No	21
	Mean M-ACE Score (SD)	15.76 (4.95)
Carers	Gender
	Male	7
	Female	18
	Mean age (SD)	71.64 (9.25)
	Relationship with the person living with dementia
	Spouse/partner	20
	Son/daughter	2
	Brother/sister	3
	Live with the person living with dementia
	Yes	21
	No	4
	Relationship status
	Married / Civil partnership	22
	Single	2
	With partner	1
	Current living situation
	Living with family/friends	24
	Living alone	1
	Level of education
	Primary	2
	Secondary	13
	Higher education college/university	6
	Further education/professional qualification	3
	Missing data	1
	Ethnicity
	White	25
	Previous experience practicing Tai Chi
	Yes	3
	No	22