No abstract

Background: Stroke survivors fall up to seven times more annually than healthy adults of a similar age. The inability to recover balance from slipping, tripping, or rapid ambulation accounts for the majority of falls, while balance control can prevent falls. An examination of the triggers for falls and balance recovery strategies for near falls is crucial for fall prevention in stroke survivors. Purpose: To examine the self-reported triggers for falls and balance recovery strategies for near falls among community-dwelling stroke survivors. Methods: Descriptive study examining fall-related data from stroke survivors (n=89) aged ≥ 50 years, at ≥ 3 months post-stroke, participating in a 12-week exercise intervention study. All subjects were interviewed weekly to ascertain fall/near fall data over the 12 weeks. Falls were defined as: “events in which subjects end up on the floor or ground when they did not expect to.” Near falls were defined as: “events in which subjects recovered their balance without falling.” Results: Subjects (46% women) were on average 70±10 years old. The majority reported an ischemic stroke (80%), were White/European-American (79%), married/partnered (60%), college-educated (79%), and retired/unemployed (93%). Over the 12-week trial, there were a total of 124 fall-related events (n=34 falls, n=90 near falls); all events happened at home. Most falls happened due to slipping or tripping (21%) or rapid ambulation (18%). Other reported fall triggers included: legs or knees giving way (12%), bathroom related incidents such as incontinence (12%), reaching or leaning (6%), and vertigo or syncope (3%). Subjects most commonly recovered their balance without falling by grabbing onto or leaning against something (62%). A total of 29 (23%) fall-related events resulted in an injury, though only 8% of those events were evaluated by a healthcare provider. Conclusion: Our data suggests that stroke survivors fall most frequently as a result of slipping, tripping or rapid ambulation. Future studies investigating the effects of fall prevention strategies on these fall triggers are recommended. Since balance recovery was aided by grabbing onto or leaning against something, post-stroke home safety evaluation is essential in preventing falls.

Background: Poor physical function and quality of life are ubiquitous post-stroke. Effective interventions to improve physical function and quality of life for stroke survivors are critically needed. Objective: Examine the effect of a Tai Chi (TC) intervention on physical function and quality of life. Methods: In a single-blind randomized clinical trial community-dwelling stroke survivors, aged ≥ 50 years and ≥ 3 months post-stroke, were assigned to: Yang style 24-posture TC (n=53), SilverSneakers® (SS, n=44) strength and range of movement exercise, or Usual Care (UC, n=48) for 12 weeks. TC and SS attended a 1-hour class 3 times/week, while UC had weekly phone calls. Standardized measures for Physical Function were the Short Physical Performance Battery (SPPB), Fall Rates and 2-Minute StepTest; and for Quality of Life were the Medical Outcomes Study SF-36, Center for Epidemiological Studies Depression and Pittsburgh Sleep Quality Index. Results: A total of 145 stroke survivors (47% women, mean age=70 years, time post-stroke=3 years, ischemic stroke=66%, hemiparesis=73%) enrolled. During the intervention, TC participants had 2/3 fewer falls (n=5 falls), than the SS (n=14 falls) and UC (n=15 falls) groups (χ2=5.60, p=0.06). All groups had improvements in the SPPB score (F 1,142 =85.29, p<0.01), after the 12-week intervention. Post-hoc tests following a significant interaction for the 2-Minute StepTest (F 2,142 =4.69, p<0.01) indicated TC (t 53 =2.45, p=0.02) and SS (t 44 =4.63, p<0.01) groups had significantly better aerobic endurance over time, though the UC group did not (t 48 =1.58, p=0.12). All groups reported better perceived physical (SF-36 PCS, F 1,142 =4.15, p=0.04) and mental health (SF-36 MCS, F 1,142 =15.60, p<0.01), after the intervention. There were no significant within group changes in perceived physical health (p>0.05), while significant improvements in perceived mental health (p < 0.05) were observed within all groups. No significant changes in depressive symptoms or sleep quality were observed (p>0.05). Attrition was 10% (n=14), and intervention adherence rates were 85%. Conclusions: Goals of stroke rehabilitation are to prevent disability, improve physical function and quality of life. TC and SS led to improved aerobic endurance, and both are suitable community-based programs that may aid in stroke recovery and community reintegration. Our data suggest that a 12-week TC intervention may be more effective in reducing fall rates than SS or UC. Future studies examining the effectiveness of TC to reduce fall rates; and improve physical function and quality of life for community-dwelling stroke survivors are recommended.

Background: Compared to same age healthy adults, stroke survivors experience 7 times as many falls annually. Such falls often cause hip or other fractures, loss of mobility, and increased fear of falling resulting in social isolation and/or dependence. Effective interventions for preventing falls among stroke survivors are critically needed. Tai Chi exercise has been shown to significantly reduce the number of falls in healthy older adults. Purpose: To examine the effect of a 12-week Yang-style Tai Chi (TC) intervention on fall rates among stroke survivors compared to SilverSneakers® (SS) and Usual Care (UC) groups. Methods: A randomized prospective clinical trial was conducted among stroke survivors (n=89), aged ≥ 50 years, and at ≥ 3 months post-stroke (TC, n=30; SS, n=31; or UC, n=28). TC and SS groups attended a 1-hour class 3 times/week for 12 weeks. The UC group received a weekly phone call along with written materials for participating in community-based physical activity. All subjects were interviewed weekly to ascertain fall data over the 12 weeks. Falls were defined as: “events in which subjects end up on the floor or ground when they did not expect to.” Data were analyzed using χ2 statistics with Yate’s continuity correction. Results: Subjects (46% women) were on average 70±10 years old. The majority reported an ischemic stroke (80%), were White/European-American (79%), married/partnered (60%), college-educated (79%), and retired/unemployed (93%). Over the 12-week trial, a total of 34 falls occurred; all happened at home, yet only 4 subjects sought medical attention for the fall. Most falls happened because subjects slipped or tripped (21%). The TC group had fewer falls (n=5 falls) than SS (n=14 falls) or UC (n=15 falls) groups (χ2=5.60, p=0.06). Post-hoc tests indicated that TC had significantly fewer falls than UC (χ2=4.29, p=0.04); while there was no significant difference between TC and SS (χ2=2.61, p=0.11), or SS and UC (χ2=0.29, p=0.59) groups. Conclusion: Our data suggest that a 12-week Yang-style TC intervention decreases fall rates among stroke survivors. Future studies examining the effectiveness of TC as a fall prevention strategy are recommended.