Characteristics of napping in community-dwelling insomnia patients.

Objective: We aimed to determine napping characteristics of community-dwelling patients with insomnia disorder (ID) compared to characteristics of normal controls (NC), and to examine the effect of napping on nocturnal sleep.

Methods: Adult volunteers who were more than 18 years old were recruited from three rural public health centers in Korea. Data from actigraphy recording and a sleep diary filled out for seven days were obtained.

Korean version of the Fatigue, Resistance, Ambulation, Illnesses and Loss of weight questionnaire versus the Modified Kihon Checklist for Frailty Screening in Community-Dwelling Older Adults: The Aging Study of PyeongChang Rural Area.

Aim: To compare the five-item Korean version of the Fatigue, Resistance, Ambulation, Illnesses and Loss of weight (K-FRAIL) questionnaire versus the 28-item Kihon + 3 index (the 25-item original Kihon checklist plus multimorbidity, sensory impairment, and Timed Up and Go test) in identifying prefrail or frail older adults.

Methods: We carried out a cross-sectional analysis of 212 community-dwelling older adults (mean age 76 years; 41% male) in PyeongChang County, Korea. We compared the C statistic, sensitivity and specificity of the K-FRAIL questionnaire (range 0-5; cut-point ≥1) versus the Kihon + 3 index (range 0-31; cut-point ≥4) and the original Kihon checklist (range 0-25; cut-point ≥4) in identifying prefrail or frail individuals according to the Cardiovascular Health Study criteria.

Reliability and validity of the Korean version of Morningness-Eveningness Questionnaire in adults aged 20-39 years.

Morningness-Eveningness (ME) can be defined by the difference in individual diurnal preference observed from general behavioral patterns including sleep habits. The Horne & Östberg Morningness-Eveningness Questionnaire (MEQ) has been used for classifying ME types. We examined the reliability of a Korean version of the MEQ (Korean MEQ) and verified its validity by comparing responses on the Korean MEQ to objectively-recorded sleep-wake rhythms.

Evaluation of the anaesthetic effects of medetomidine and ketamine in rats and their reversal with atipamezole.

Objectives: To compare the anaesthetic effects of varying doses of medetomidine (MED) combined with ketamine (KET) in rats, and to determine the efficacy of atipamezole (ATI) in the reversal of these effects using electroencephalogram (EEG) and assessment of clinical parameters.

Study Design: Prospective, randomized experimental trial.

Animals: Twenty-one male Sprague-Dawley rats weighing 300-398 g and aged 8-11 weeks old.

The effect of chitosan bead encapsulating calcium sulfate as an injectable bone substitute on consolidation in the mandibular distraction osteogenesis of a dog model.

Purpose: The purpose of this project was to study the effect of chitosan bead encapsulating calcium sulfate, which provides a sustained release of chitosan and calcium sulfate after implantation, on early bony consolidation in distraction osteogenesis of a dog model.

Materials And Methods: Forty-five dogs were used for this study. An external distraction device was applied to the mandibular body after a vertical osteotomy and mandibular distraction was initiated 5 days after the operation at a rate of 1 mm/day up to a 10-mm distraction.

The bone regenerative effect of chitosan microsphere-encapsulated growth hormone on bony consolidation in mandibular distraction osteogenesis in a dog model.

The purpose of this project was to study the effect of chitosan microsphere-encapsulated human growth hormone, which causes sustained release of chitosan and human growth hormone after implantation on early bony consolidation in distraction osteogenesis of a canine model. Forty-eight dogs were used for this study. An external distraction device was applied to the mandibular body after a vertical osteotomy, and the mandibular distraction was started 5 days after the operation at a rate of 1 mm/d up to a 10-mm distraction.