Objective: This study identified the characteristics of sedentary behavior (SB) patterns among older individuals with knee osteoarthritis.

Methods: The participants were 55 older outpatients. Measurements included SB patterns and moderate-to vigorous physical activity from three-axis accelerometer data, pain intensity, physical disability, physical function, and knee osteoarthritis-related and sociodemographic variables. Descriptive statistics and generalized linear models were used to identify SB patterns and sociodemographic and other associated variables.

Results: Average sedentary time was 543 min/day (59% of accelerometer wear time) with 6.6 breaks/sedentary h. The proportion of prolonged sedentary bouts in daily sedentary time was 44.5% (4.7 time/day). Individuals aged ≥75 years had longer sedentary time, higher proportion of sedentary time and number of prolonged bouts, and fewer number of breaks compared with those aged 65–74 years. Individuals with severe physical disabilities had higher proportion of sedentary time and number of prolonged bouts. Individuals with lower physical function had longer and higher proportion of sedentary time and fewer number of breaks than the counterpart.

Conclusions: Prolonged sitting in older individuals with knee osteoarthritis was associated with aging, severe physical disability, and low physical function.

Objective: The purpose of the present study was to qualitatively examine the subjective effects of an internet based, simultaneous, interactive online exercise program among older adults living in urban areas.

Methods: Semi-structured interviews were conducted with 16 older urban residents who participated in an online exercise program. The analysis employed analytical induction, which classifies content from verbatim transcripts.

Results: It was found that older adults are aware of effects of five aspects of the program: physical changes, mental changes, continuation of exercise, connectedness, and ICT society.

Conclusions: Online exercise programs on older adults not only improved physical and mental functions through exercise, but also spilled over into improved social participation and increased use of the internet. The online exercise programs may contribute to the maintenance and improvement of independent living functions of the older adults in the community and may be an option for future long-term care prevention activities.

Objective: This study aimed to examine the association between impulsivity and critical health literacy among college students.

Methods: We conducted a web-based survey in college students. The outcome was critical health literacy obtained from a test for measuring the ability to interpret medical information (TAIMI). Exposure was impulsivity measured using a validated questionnaire. Participants were categorized into tertiles; cautious (T1), average (T2), and impulsive (T3), based on their impulsivity scores. The logistic regression model estimated the odds ratios (ORs) and 95% confidence intervals (CIs) for low TAIMI scores (< 6) and incorrect answers to each question, comparing T2 and T3 with T1 (reference), with adjustment for confounders, including age, sex, faculty, alcohol intake status, exercise habit, sleep duration, and self-reported health status.

Results: Overall, 415 individuals (mean age = 20.1 years [standard deviation = 2.1]; 188 [45.3%] men) responded to the survey. Multivariable logistic regression model revealed no significant association between impulsivity scores and critical health literacy. Secondary analyses showed that the impulsive group was more likely to select incorrect options in Q6 of the TAIMI (graph reading) than the cautious group (T2; OR [95%CI] = 1.57 [0.58–4.28], T3; 3.01 [1.21–7.53], P for trend = 0.017).

Conclusion: Impulsivity was not associated with critical health literacy in college students. Further research is needed to examine the relationship between impulsivity and graph literacy.

Objective: To prevent hip fractures, comprehensive assessment and intervention including health status, nutritional status, and cognitive function, as well as musculoskeletal disorders, are necessary. In this study, we aimed to clarify the prevalence and characteristics of frailty as a background factor for this fracture by assessing for the elderly using a questionnaire.

Methods: We included 150 cases of hip fractures (79.3% female, mean age 83.0±5.1 years) who were over 75 years old, were injured by falls, and were able to walk before the fracture. We used the health assessment questionnaire for old-old adults to determine preinjury characteristics, and further examined differences by age group.

Results: 53.3% (80 cases) were frail. In addition to physical function, many cases of frailty were also found in items related to nutritional status and oral function.

Conclusions: Many of the patients had frailty even before the injury, and the causes were diverse, suggesting the need for early and comprehensive evaluation and specialized multidisciplinary intervention.

Objective: The function of shoes decreases in accordance with the wear of shoe soles. Most markedly where the lateral heel first contacts the ground during gait. However, it has not been clarified how walking with worn-out soles affects the burden of the lower extremity joints. The purpose of this study was to show the effect of the worn-out soles on the joint load during gait.

Methods: Fifteen healthy individuals participated in this study. Gait at comfortable speed was measured with both without worn-out soles and normal soles using a 3D motion analysis system and force plates.

Results: No differences were found in the varus angle and moment of the knee joint between the two conditions. However, a significant increase in peak adductive moment of the hip joint just after initial contact and a significant decrease of knee flexion angle and knee extension moment in loading response were found in the worn-out sole condition compared to the normal insole condition.

Discussions: The results showed that continuous walking with the worn-out soles induces a decrease in knee flexion in early stance and would increase the risk in the knee joint.

Objective: This study aimed to develop an individualized exercise application (exercise app) that can be used at home and conduct a pilot study to evaluate its convenience and usage.

Methods: In Wakasa Town, Fukui Prefecture, 31 people (14 males and 17 females; average age 72.8 years) agreed to participate in a demonstration test. The demonstration test was conducted between March and June, 2024. For evaluation, questionnaires were surveyed and the utilization rate achieved (once a week) was calculated. We also related the words and phrases from the free text of the questionnaire using a co-occurrence network.

Results: The IoT device and the app developed for verification were used by 29 participants. Co-occurrence network analysis for satisfaction with health videos showed many words for “watch,” and relationships were found among “watch,” “video,” “content,” “self,” and “time”. The utilization rate achieved was 66.7% at the beginning of implementation, but decreased to 17.2% by the 11th week.

Conclusions: The evaluation of the exercise application developed in this study was low in terms of usage, revealing issues that need to be addressed, such as taking into account the time spent watching videos.