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Publications (5)0 Total impact

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    ABSTRACT: Purpose: To understand influencing factors for late bedtime of infants having nocturnal life, with respect to each development age and sleep behavior of parents and children. We researched on sleep-awake behaviors and ten-day sleep logs of 277 subjects, who registered for a three-year cohort survey. The cohort is recruited at the time of routine examinations for 4 month, 1.5 years, and 3 years, held at three Health andWelfare centers in Fukuoka city in September and October, 2007. We conducted two-way analysis of variance and post-hoc test of Turkey's multiple comparative tests. The independent variables are three age groups (infants, 1. 5 years, and 3 years) and three bedtime categories (late : after 22 o'clock, normal : between 21 and 22 o'clock, and early : before 21 o'clock ), and the dependent variables are background date, sleep parameter of parents and children, and factors of sleep behavior and so on. The qualitative data including physical conditions, growth status, frequencies of each life activity are analyzed by tabulation, and fulfillment in child raring is analyzed by stepwise multiple linear regression analysis with 15 objective variables, to bring out factors to induce nocturnal life. Results : Children's bedtime had significant effect for bedtime variables. The bedtime difference was about 40 minutes between the early bedtime group and the late bedtime group. The early bedtime group had the earliest wake-up time among the all age groups, followed by the normal, and then the late bedtime group. Efforts to keep regular sleep and wake-up times were made greatly in the early bedtime group, and the normal and then the late bedtime group followed after. The mothers in the late bedtime group considened an ideal bedtime was around 21h although they were not able to realize it. The lengths of TV viewing and daytime nap had also significant effects for children's bedtimes. As a result of multiple comparisons, there were significant differences between the early and the late bedtime groups and between the normal and the late bedtime groups. For the bedtime of children, only mothers' total sleep hours on weekdays had a significant negative correlation, while all the other parameters were significantly and positively correlated. Discussion : The study showed influencing factors for bedtime of children were mothers' routine duties in daily life, especially wake-up time, total sleep hours, daytime napping hours of children, and the length of TV viewing. This suggests that further effort on education for sleep environment management is needed.

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    ABSTRACT: 本論文はOO分析記述言語OONJの記述規則の数が多く複雑で, 理解し難さを解決するために考案されたドメインユーザ(以降, DUと略)にも使いこなせる簡潔なOO技術, すなわちsimpleOO技術を開発した報告である.それを適用してOONJの記述規則を四段階に分けたsimpleOONJ(oonj1, 2, 3, 4と呼ぶ)に再構成設計し, 記述を支援するエディタを開発した.記述実験や記述例を検討した結果, oonj1,2共に狙い通りDUに充分に簡潔に書けること, 記述エディタで更にやさしく使えることが検証され, その有効性が検証された.simpleOONJと記述エディタはDUが実際にOO技術を使いこなす際に有用であること, simpleOO技術が有効であることが立証できた. We have already developed a Natural Japanese(NJ)-based, Object-oriented(OO) description language OONJ for the Domain Users (DUs) who are the experts of a certain professional domain in science/technology. The DUs have pointed out that the description rules of OONJ are too many and complex. To solve this problem, we have newly developed the "simpleOO" technology, and then designed a new simpleOONJ as the four stage language series oonj1, 2, 3, 4 with its description editors. Some description experiments/examples have shown that the oonj1 and 2 are simple enough for DUs, and that the description editor has provided far simpler environments than that without it. As for the conclusion, the simpleOONJ based on the simpleOO technology have successfully been realized.
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    ABSTRACT: The purpose of this study was to investigate the characteristics of sleep-wake behavior during the period from late pregnancy to puerperium by evaluating the number of actigraphic activities in a primipara woman and to compare the results with the findings from sleep logs. An regularity of the sleep-wake behavior was not possible during about 5th weeks after delivery. When compared to that in the 37 to 39 weeks of pregnancy, the wake after sleep onset (WASO) was longer during the entire postpartum period. During the second and third weeks of postpartum period, the sleep efficiency was lowest, and the WASO was longest, but they both began to recover slightly after that. Most waking hours at night were spent on breast-feeding or taking care of baby. Except for the number of daytime naps and sleep latency, the results of actigraph strongly correlated with the contents of the sleep logs. These results were indicative of the association between the lactation cycle to neonate and the sleep-wake cycle. 本研究は,妊娠・分娩によって夜間睡眠や昼間の睡眠がどのような影響を受けるのかを,長期間,連続測定可能な携帯用活動計アクティグラフと睡眠日誌によって検討した。その結果,産後約1カ月までの睡眠・覚醒リズムの乱れは妊娠末期より顕著であること,特に産褥2週目から5週目にかけて夜間の中途覚醒が増大すること,また,新生児の授乳リズムが確立する時期に母親の睡眠・覚醒リズムもほぼ安定した傾向を示していくことなどの特徴を明らかにした。これら睡眠・覚醒行動は,新生児の授乳リズムの確立ないしは睡眠・覚醒リズムの発達と関連していることを考察した。
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    ABSTRACT: 本研究は,産前7週から産後15週間にわたって連続した26名の母親と出生から14週齢の乳児12名および年齢・産歴をマッチングした12名の非妊産婦(対照群)の睡眠日誌の解析から,産後の母親の睡眠・覚醒行動の変化や夜間における母親と乳児の覚醒行動の同期性および母親の夜間覚醒と疲労感との関連性などについて検討した。母親の夜間中途覚醒は,乳児の授乳・排泄などの世話に殆どが費やされていた。出産後の早い週ほど夜間睡眠の乱れが大きく,乳児の睡眠・覚醒リズムの発達に伴って母親の中途覚醒時間も暫時減少した。母親の頻回の中途覚醒は,産後9週ないし10週頃まで持続するが,産後14週に至っても対照群に比し有意に増大していた。入眠状態,熱眠感,および起床気分の不調の訴え率は,妊娠末期から産後7週ないし8週頃まで有意に高かった。疲労残の訴え率は,産後10週頃まで高いレベルを維持しその後やや減少したが,産後15週にいたっても対照群に比して有意に高かった。「頭が重い」,「眠い」,「目が疲れる」,「肩がこる」の訴えスコアーは,産後どの週にあっても有意に高かった。以上の結果から,母親の夜間睡眠の乱れは,産後の早い週ほど大きく,乳児の睡眠・覚醒リズムの発達にともなって,暫時改善されていくとは言え,疲労は産後15週に至っても残存するものと推測された。 Sleep logs were performed in order to investigate the changes in the mother's sleep-wake patterns and fatigue during the period from late pregnancy to postpartum and similarities between the wake behaviours of mothers and their infants during the nights Records of sleep and wakefulness were kept on 26 mothers from the 7th week before delivery to the 15th week in the postpartum and 12 infants during first 14 weeks of life. Data of 12 non-pregnant women with matching age and obstetric history were collected and used as a control. The data indicates that the Mother's wake after sleep onset (WASO) during nocturnal sleep periods were mostly spent caring for the infant, breast feeding, diapering. There is greater irregularity of nocturnal sleep during early postpartum than during late postpartum, similarly the mother's WASO gradually decreased with the development of their infants' sleep-wake rhythm. There is a high frequency of WASO between birth and until the 9th or 10th week postpartum after delivery, and the results increased significantly when compared with the control women. In the self-esti-mation by the mother, her sleep status (deep sleep, feeding after sleep) from late pregnancy to the 7th or 8th week after delivery was significantly) disrupted than those in late pregnancy. Mean scores for subjective feelings of fatigue continued at a high level until 10 weeks postpartum and gradually decreased towards to 15th weeks of post-partum, but was still significantly higher than in the control women. The numbers of subject complaints of "feel heavy in the head" , "become drowsy" , "feel strained in the eyes" , and "feel stiff in the shoulders" were significantly higher during the early postpartum week. The irregularity continues until about the 15th week after delivery, but is gradually decreasing as the infant develops a sleep-wake rhythm and feeding rhythm. We find that increased fatigue continues until the 12th week after delivery.