Nocturnal sleep pattern in native Brazilian Terena adults

Abstract

-Social-economic factors influence sleep habits. This research analyzes characteristics of nocturnal sleep in Brazilian Native Terena adults. Sixty-four adults (31 M; 33 F) from 18 to 75 years, with a mean age of 37.0, from the Indian Reservation village of Córrego do Meio, in the central region of Mato Grosso do Sul, an agriculturally oriented group were evaluated. Nocturnal sleep characteristics were evaluated by means of a standard questionnaire applied to each individual. It was observed that reported nocturnal sleep was longer, sleep onset was earlier and wake up time was also earlier than usually described in urban populations. The mean total time in bed was 8.5 h or more, in every age bracket. The seven-day prevalence rate of insomnia was 4.6%, while the seven-day prevalence rate of hypnotic use was 1.5%, both remarkably less than described in urban populations. These findings stress the need to consider ethnic influences on sleep patterns and disorders.KEY WORDS: sleep, sleep habits, insomnia, sleep disorder, hypnotic, Native, Indian, Terena, Mato Grosso do Sul, ethnic. Padrão de sono noturno em adultos indígenas TerenaRESUMO -Fatores sócio-econômicos influenciam os hábitos de dormir. A presente pesquisa analisa as características do sono noturno em indígenas Terena. Avaliamos 64 adultos (31 M; 33 F) de 18 a 75 anos de idade (média 37,0 anos) da aldeia Córrego do Meio, situada em reserva indígena na região central do Mato Grosso do Sul, basicamente agrícola. As características do sono noturno foram avaliadas por meio de questionário padronizado. Como resultado, verificamos o sono noturno relatado foi mais longo, o início do sono foi mais cedo e o despertar pela manhã também mais cedo, do que os índices descritos em populações urbanas. A média do tempo na cama foi 8,5 h ou mais em todos os grupos etários. A prevalência de insônia (no período de 7 dias) foi 4,6%, ao passo que a prevalência do uso de hipnótico (no período de 7 dias) foi 1,5%, ambos acentuadamente menores que os descritos em populações urbanas. Tais achados ressaltam a necessidade de se considerar as infuências étnicas ao avaliar caracteríticas e distúrbios do sono. PALAVRAS-CHAVE: sono, hábito de dormir, insônia, distúrbio do sono, hipnótico, nativo, índio, Terena, Mato Grosso do Sul, étnico.Social-economic and cultural factors play a relevant role determining diurnal 1 and nocturnal sleep habits, including sleep duration, regular sleep onset time and morning wake up time. Several sleep disorders and treatments are also influenced by these factors, including the insomnias (disorders of initiating and maintaining sleep), and the use of hypnotic.

Documenting orang-utan sleep architecture: sleeping platform complexity increases sleep quality in captive Pongo

“…The discrepancies in chimpanzee data illustrate the need to gather sleep quota data on chimpanzees using non-invasive methods such as the infrared videography used in this study. Although the sleep duration exhibited by orang-utans in this study was longer than western human volunteers studied in controlled environments, the value falls within the range of durations reported for aboriginal populations (7-10 h) of New Guinea and South America (Siegmund et al, 1998;Reimao et al, 2000). Around sunset, individuals locate a sleep location and gather bed materials (see methods for detail on materials) to manufacture a sleeping platform.…”

Sleep duration, quality, and timing and their associations with age in a community without electricity in haiti

“…A few other studies have examined sleep in non-Westernized or developing areas (see Table 3). For example, a study among the Native Terena, a rural agricultural group in Brazil, found that they spent an average of 9 h in bed, went to bed at 20:43 and woke at 6:06 on weekdays for all age groups combined (Reimão et al, 2000). Despite being based on self-report, average bedtime, and time in bed were similar to the averages in the Haiti sample; however, average wake time in the Native Terena was approximately 1 h later.…”

“…A few studies have examined sleep in communities outside of the United States, Europe, and Japan. These have included a study among an agricultural population in Brazil, the Native Terena (Reimão et al, 2000), a study of men in Abidjan, a large city in the Ivory Coast (Bogui et al, 2002), a study among college students in Mexico City, among college students in Ethiopia (Lemma et al, 2012) and among college students in Nigeria (Oluwole, 2010). The primary limitation of all of these studies is that they relied on self-reported sleep duration and timing.…”

Orangutan Night-Time Long Call Behavior: Sleep Quality Costs Associated with Vocalizations in Captive Pongo

“…The cross-cultural study of human sleep expression, sleep architecture (distribution of NREM and REM throughout a nightly sleep bout), diurnal bouts of inactivity (i.e., napping and/or energy conservation), and sleep quality is in its infancy [46][47][48][49]. The sociophysical ecology of human sleep is more readily accessible in historical and ethnographic records, yet the only data relative to forager sleep expression is anecdotal.…”