At Kanazawa University and across 14 rehabilitation hospitals in Japan, researchers are learning that not all stroke patients sit the same way. Masashi Kanai and his team at the Japanese Stroke & Physical Activity Multiple Center Research Team have discovered something that sounds simple but changes everything about recovery: the way patients spend their sedentary time during rehabilitation matters as much as how much time they spend sitting.
The study tracked 420 stroke patients admitted to inpatient rehabilitation programs, using triaxial accelerometers—motion sensors worn on the body—to measure when they were sitting, reclining, or lying down while awake. This might seem obvious, but sedentary behavior during stroke recovery is stubbornly common and often overlooked. What makes this research different is that the team didn't just count total sitting time. They measured five specific indicators: how often patients took short breaks (under 30 minutes of sitting), medium breaks (30 to 59 minutes), or long uninterrupted stretches (60 minutes or more), plus total sedentary time and how frequently they moved between sedentary and active periods.
When the researchers applied cluster analysis to this data, collected at admission and again one month later, three distinct patient profiles emerged: a low sedentary behavior group, a moderate sedentary behavior group, and a high sedentary behavior group. Each group showed different patterns in how their sedentary behavior changed during that critical first month of rehabilitation. The findings, published in the Journal of Neurologic Physical Therapy, suggest that some patients accumulate their sitting time in different ways—some break it up frequently, others sink into long stretches—and they respond differently to rehabilitation interventions.
This matters because stroke recovery is a delicate balance. Physical activity and movement are crucial for regaining strength and mobility, yet the inpatient rehabilitation environment itself often encourages extended periods of sitting. Patients attend therapy sessions and then rest; they participate in structured activities and then wait. Understanding that patients fall into distinct sedentary profiles opens a door that standard one-size-fits-all rehabilitation programs have kept closed.
"Rather than simply trying to reduce sedentary time in the same way for all patients, it may be important to understand each patient's sedentary behavior pattern and how it changes during rehabilitation," Kanai explained. This isn't just academic—it's a direct challenge to the assumption that everyone needs the same prescription for movement.
The implications ripple outward. If rehabilitation teams can identify a patient's sedentary profile early, they can tailor interventions accordingly. A patient who naturally breaks up their sitting time might need different support than one who falls into long, uninterrupted stretches of inactivity. The researchers hope this early behavioral profiling will guide the development of truly individualized strategies, transforming rehabilitation from a standardized protocol into a precision approach.
"We hope that this study will serve as a starting point for considering more individualized support for patients after stroke," Kanai said. As rehabilitation practice slowly embraces the assessment of physical activity and sedentary behavior, stroke patients may finally get recovery plans that fit who they actually are, not who the system assumes they should be.