Table 4.

Adverse Events.

Event	Tai Chi	Resistance	Stretching
	number of events
In class*
Fall†	2	4	5
Muscle soreness or pain	1	4	1
Dizziness or faintness	0	3	2
Symptoms of hypotension	0	3	1
Out of class‡
Fall†	19	31	26
Symptoms of chest pain or discomfort	0	3	2
Symptoms of hypotension	0	1	2
Low back pain	4	4	5
Ankle sprain	1	2	1

^*Values are the number of events that occurred during in-class sessions.

^†Data on falls are based on the total falls reported by participants in their “falls calendars.”

^‡Values are the number of events that occurred outside class settings (i.e., in the home or during an assessment). Participants did not engage in home practice; events presented are those that occurred in a home environment while participants engaged in a habitual activity (self-reported) or that were observed during a laboratory assessment (assessor-reported).