This study aimed to determine the relationships between the torque generating capacity of the lower extremity muscles and either running or jump performance in primary and junior high school boys. A total of 102 primary and junior high school boys participated in this study. Muscle thicknesses (MTs) of the knee extensors and plantar flexors were determined using ultrasonography. Muscle volumes (MVs) of the knee extensors and plantar flexors were estimated using MTs and limb lengths. The isometric joint torques (TQs) for knee extensors and ankle plantar flexors were measured using myometer. MV and TQ were divided by body mass (MV/BM and TQ/BM, respectively). Running velocity was measured using a non-motorized treadmill. The counter movement jump (CMJ) and squat jump (SJ) were performed on a matswitch system. The flight time was measured and used to calculate the heights of CMJ and SJ using the following equation; height (cm) = g × (flight time)² /8/10. As the result of multiple regression analysis, age, MV/BM and TQ/BM were selected as predictors of running velocity in the primary school boys, whereas TQ and lean body mass in junior high school boys. In the primary school boys, TQ/BM and body fat mass was selected as significant contributors for SJ and CMJ performances, whereas, in the junior high school boys, TQ and the percent of body fat for SJ performance and MV/BM and TQ for CMJ performance. Thus, the present results indicate that the relationships between torque generating capacity of the lower extremity muscles and either running or jump performance differ between primary and junior high school boys. It may be assumed that, for running and jump performances, muscle mass and strength become determinant factors in junior high school boys, whereas their values relative to body mass in primary school boys.

Purpose: This study aimed to report on the multidisciplinary web conferences for patients with heart failure to strengthen medical collaboration and provide seamless support. Method: We described and analyzed the web conferences by retrospectively collecting data on the conferences. Result: Main subjects of the conferences were those who lived alone and had inadequate nursing care, and those to whom the intervention of multidisciplinary professionals needed to be strengthened to prevent readmission. Using web conferencing tools, we shared issues and solutions for discharge with considering the anonymity of the patient’s personal information. The conferences were held once weekly for 30 minutes when the patients were in the stages of preliminary discharge planning. Participating physicians and healthcare professionals included cardiologists, nurses, pharmacists, physical therapists, nutritionists, palliative care physicians, and home doctors. The cardiology staff used a multifaceted checklist to clarify issues while sharing the patient’s condition and treatment plan. The palliative care physicians made suggestions about value-based treatment plans and decision support, and the home doctor made suggestions about home services, drug adjustment, and lifestyle guidance necessary to prevent readmission. Discussion: Further improvement in the web conferences and evaluation on the effect of the conferences are needed.