Objectives: Although osteoporosis affects approximately 15.9 million people in Japan, screening rates remain low.Dental panoramic radiographs (DPRs), routinely used in general dental practice, may facilitate opportunistic screening, yet referrals based on these images are not widely implemented. This study evaluated referral rates to orthopedic departments of patients with suspected osteoporosis identified using DPRs. Methods: Among 3237 female patients aged ≥ 50 who underwent DPRs between February 2022 and October 2024, 328 without a prior osteoporosis diagnosis were identified as suspected cases. Their primary dentists referred these patients to our hospital’s orthopedic department. Additionally, trained oral radiologists optionally provided information on osteoporosis. We assessed (1) the overall referral rate, (2) differences in referral rates based on whether an explanation by oral radiologist was provided, (3) referral rates stratified by age group, and (4) the prevalence of osteoporosis, osteopenia, and asymptomatic vertebral fractures among referred patients. Results: Of the 328 patients, 53 (16.2%) visited the orthopedic department. Referral rates were significantly higher among patients who received explanations from trained oral radiologists (50.9%) than among patients who did not (9.1%). Referral rates peaked among patients in their 60s (23.7%). Among referred patients, 60.4% were diagnosed with osteoporosis and 37.7% with osteopenia; five patients had asymptomatic vertebral fractures. Conclusions Despite easy access to orthopedic care, referral rates remained low, likely due to limited awareness.Explanations by trained oral radiologists significantly improved referral rates, highlighting the importance of dentist-led education and interdisciplinary collaboration in promoting osteoporosis screening in general dental practice.

The purpose of this study was to investigate the fluctuation of the recovery period of autonomic nervous activity (ANA) after isokinetic exercise. Sixteen male subjects participated in this study after they turned in their consent forms.The subjects performed isokinetic knee extension-flexion exercise using BIODEX. We obtained the electro-cardiogram during the entire experiment. We calculated their heart rate (HR) and power spectral of R-R interval (LF is low frequency component, and HF is high frequency component. Both indexes were converted to a logarithm transformation as to lnHF and lnLF.) from pre-exercise period (PRE) and post-exercise period (POST).Some researchers reported that ΔlnHF of POST was lower and ΔLF/HF of POST was higher than those of PRE immediately after aerobic exercise; however, this study's results were in complete contrast.In conclusion, we found that the recovery periods after aerobic and isokinetic exercises of ANA are entirely different.

The present study aimed to examine the change cold-induced vasodilation (CIVD) of finger between seven female alpine (AP group) and six female cross-country skiers (CC group) at different points in their training programs. The CIVD test was performed twice, once in spring period after ski-training, once in the summer period during physical-training.From the onset of ice-water immersion in each CIVD test, finger skin temperature in each group fell followed by an incline. Thereafter, finger skin temperature began to rise and fall in an attenuated fashion during ice-water immersion. The resistance index (RI) in summer (7.1±1.7) for AP group was significantly (P<0.01) higher than that in spring (4.6±1.1). However, that of CC group showed no difference between spring and summer.These results suggested that the physical training during summer period for AP group may influence on the improvement of CIVD.

Penetration of different kinds of peptides or collagen peptide through the intestinal membrane was studied in two experiments using anin vitrorat everted intestine penetration model. In Study 1, twelve 11-wk-old rats (Wistar strain) were randomly divided into two groups and penetration of whey peptide (n=6) and soy peptide (n=6) through the intestinal membrane was compared. In Study 2, fourteen 11-wk-old rats (Wistar strain) were divided into a control group (n=7) and a training group (treadmill running at a speed of 20-35 m/min for 15 mm day, 5 days wk for 4 wk n=7), and penetration of collagen peptide through the intestinal membrane was investigated in the two groups. In Study 1, the quantity of whey peptide that penetrated through the intestinal membrane was significantly greater than that of soy peptide (P<0.01) . In Study 2, body weight was significantly lower in the training group than in the control group except during 12 and 12.5 wk of age (13.5 wk ; P<0.01, others; P<0.05) . The weights of heart, kidney, and spleen were significantly increased, and the weight of fat was significantly decreased in the training group compared to the control group (P<0.05, P<0.05, P<0.01, P<0.05, respectively) . In both groups, a portion of collagen peptide penetrated through the intestinal membrane; but there was no significant difference in quantity between the two groups. In conclusion, the inhibition of weight gain in the training group was possibly caused by decreased feeding from lack of appetite with enforced exercise. These findings suggest that whey peptide penetrated through the intestinal membrane in greater quantities than soy peptide, and collagen peptide is not affected by enforced exercise.