Pub Date : 2022-07-29DOI: 10.1080/09291016.2022.2106711
Heng Zhang, Yingdong Li, Qing Liu
ABSTRACT The circadian rhythm is an essential environmental factor affecting several physiological activities in organisms, including crustaceans. However, daily variations in the gut bacterial community composition of crustaceans remain poorly understood. This study aimed to elucidate variations in the gut bacterial community composition of the Chinese swamp shrimp Neocaridina denticulata with the diurnal cycle. The gut samples of 600 shrimps were collected at four time points (6:00, 12:00, 18:00, and 24:00) within a 24 h period and 16S rRNA high-throughput gene sequencing was applied. The alpha-diversity and richness of the gut bacterial community were highest in the 24:00 group. Food digestion- and absorption-related pathways were highly enriched, indicating that metabolic process pathways are influenced by the daily cycle. Opportunistic pathogenic bacteria, including Flavobacterium, Acinetobacter, and Pseudomonas, were well-represented in the 18:00 and 24:00 groups, suggesting that the daily cycle shapes pathogenic bacterial community composition in the shrimp intestine. Our findings provide new insights into the role of diurnal cycles on gut bacteria in crustaceans and may aid in improving N. denticulata aquaculture.
{"title":"Influences of the diurnal cycle on gut microbiota in the Chinese swamp shrimp (Neocaridina denticulata)","authors":"Heng Zhang, Yingdong Li, Qing Liu","doi":"10.1080/09291016.2022.2106711","DOIUrl":"https://doi.org/10.1080/09291016.2022.2106711","url":null,"abstract":"ABSTRACT The circadian rhythm is an essential environmental factor affecting several physiological activities in organisms, including crustaceans. However, daily variations in the gut bacterial community composition of crustaceans remain poorly understood. This study aimed to elucidate variations in the gut bacterial community composition of the Chinese swamp shrimp Neocaridina denticulata with the diurnal cycle. The gut samples of 600 shrimps were collected at four time points (6:00, 12:00, 18:00, and 24:00) within a 24 h period and 16S rRNA high-throughput gene sequencing was applied. The alpha-diversity and richness of the gut bacterial community were highest in the 24:00 group. Food digestion- and absorption-related pathways were highly enriched, indicating that metabolic process pathways are influenced by the daily cycle. Opportunistic pathogenic bacteria, including Flavobacterium, Acinetobacter, and Pseudomonas, were well-represented in the 18:00 and 24:00 groups, suggesting that the daily cycle shapes pathogenic bacterial community composition in the shrimp intestine. Our findings provide new insights into the role of diurnal cycles on gut bacteria in crustaceans and may aid in improving N. denticulata aquaculture.","PeriodicalId":9208,"journal":{"name":"Biological Rhythm Research","volume":"54 1","pages":"186 - 198"},"PeriodicalIF":1.1,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45325658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-26DOI: 10.1080/09291016.2022.2105536
Guey Yong Chong, S. Kaur, Ruzita Abd Talib, S. Loy, Woan Yie Siah, H. Tan, Sarjit Singh Harjit Singh, Rosmiza Binti Abdullah, Hanisah Binti Mahmud, Ying Hui Lee, H. Koo
ABSTRACT Several observations have shown that meal timing and dietary components – chrononutrition – may contribute to the onset of several chronic diseases. It is vital to have a reliable questionnaire specifically for the population to assess the general chrononutrition behaviour. Thus, this study aimed to translate, validate, and test the reliability of the chrononutrition profile questionnaire (CPQ-M) for Malaysian adult population. A total of 202 Malaysian adults aged 18 to 65 years volunteered to participate in this study through a self-administered electronic form questionnaire. The construct validity was determined by exploratory factor analysis (EFA) with varimax rotation. The internal consistency was determined by Cronbach’s alpha coefficient (CAC), while the test–retest reliability was conducted using the intraclass correlation coefficient (ICC). The EFA of CPQ-M retained 18 items in a six-factor structure and explained 60.06% of the variance. The 18 items in both CPQ-M and original English CPQ (CPQ-E) were well correlated (r = 0.84 to 1.0). Of 17 items in the questionnaire, it showed good to excellent test–retest reliability (ICC: 0.82 to 0.97), except night eating habits (ICC value = 0.65). The overall CAC for CPQ-M was 0.75, indicating good internal consistency. The CPQ-M was shown to have good validity and reliability to assess the chrononutrition profile among Malaysian adults.
{"title":"Translation, validation, and reliability of the Malay version chrononutrition profile-questionnaire (CPQ-M) in Malaysian adult populations","authors":"Guey Yong Chong, S. Kaur, Ruzita Abd Talib, S. Loy, Woan Yie Siah, H. Tan, Sarjit Singh Harjit Singh, Rosmiza Binti Abdullah, Hanisah Binti Mahmud, Ying Hui Lee, H. Koo","doi":"10.1080/09291016.2022.2105536","DOIUrl":"https://doi.org/10.1080/09291016.2022.2105536","url":null,"abstract":"ABSTRACT Several observations have shown that meal timing and dietary components – chrononutrition – may contribute to the onset of several chronic diseases. It is vital to have a reliable questionnaire specifically for the population to assess the general chrononutrition behaviour. Thus, this study aimed to translate, validate, and test the reliability of the chrononutrition profile questionnaire (CPQ-M) for Malaysian adult population. A total of 202 Malaysian adults aged 18 to 65 years volunteered to participate in this study through a self-administered electronic form questionnaire. The construct validity was determined by exploratory factor analysis (EFA) with varimax rotation. The internal consistency was determined by Cronbach’s alpha coefficient (CAC), while the test–retest reliability was conducted using the intraclass correlation coefficient (ICC). The EFA of CPQ-M retained 18 items in a six-factor structure and explained 60.06% of the variance. The 18 items in both CPQ-M and original English CPQ (CPQ-E) were well correlated (r = 0.84 to 1.0). Of 17 items in the questionnaire, it showed good to excellent test–retest reliability (ICC: 0.82 to 0.97), except night eating habits (ICC value = 0.65). The overall CAC for CPQ-M was 0.75, indicating good internal consistency. The CPQ-M was shown to have good validity and reliability to assess the chrononutrition profile among Malaysian adults.","PeriodicalId":9208,"journal":{"name":"Biological Rhythm Research","volume":"54 1","pages":"164 - 185"},"PeriodicalIF":1.1,"publicationDate":"2022-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44238877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-19DOI: 10.1080/09291016.2022.2098619
V. Tejaswi, J. Bosco, V. Verma, Anjali, M. C. Pathak, H. A. Samad, A. K. Tiwari, V. S. Chouhan, V. P. Maurya, M. Sarkar, G. Singh
ABSTRACT The present study was undertaken to evaluate the adaptive capability between native and crossbred cattle during summer and winter using certain serum biochemical variables. Eighteen apparently healthy lactating cattle of same age group between 4 and 5 years were selected and divided into three groups (n = 6) with consideration of breed as Group I: Crossbred, Group II: Tharparkar and Group III: Sahiwal. Blood samples were collected from each animal for 6 weeks during summer and 6 weeks in winter. A significant high values of all the biochemical parameters under the study, viz., total protien, albumin, glucose, blood urea nitrogen, creatinine and cholesterol were noted in summer in comparision to winter within each group. Also, Group III showed higher values of glucose, creatinine, cholesterol both in summer and winter when compared to the other study groups. Our results suggested that the heat stress has a more deleterious effect on the plasma biochemical parameters irrespective of the breed. In addition, among native breeds and crossbred, the native cattle showed minimum biochemical variations with the season and thus can be considered as higher thermo-adaptable than the crossbred cattle.
{"title":"Seasonal alterations in blood biochemical parameters among zebu and crossbred cattle","authors":"V. Tejaswi, J. Bosco, V. Verma, Anjali, M. C. Pathak, H. A. Samad, A. K. Tiwari, V. S. Chouhan, V. P. Maurya, M. Sarkar, G. Singh","doi":"10.1080/09291016.2022.2098619","DOIUrl":"https://doi.org/10.1080/09291016.2022.2098619","url":null,"abstract":"ABSTRACT The present study was undertaken to evaluate the adaptive capability between native and crossbred cattle during summer and winter using certain serum biochemical variables. Eighteen apparently healthy lactating cattle of same age group between 4 and 5 years were selected and divided into three groups (n = 6) with consideration of breed as Group I: Crossbred, Group II: Tharparkar and Group III: Sahiwal. Blood samples were collected from each animal for 6 weeks during summer and 6 weeks in winter. A significant high values of all the biochemical parameters under the study, viz., total protien, albumin, glucose, blood urea nitrogen, creatinine and cholesterol were noted in summer in comparision to winter within each group. Also, Group III showed higher values of glucose, creatinine, cholesterol both in summer and winter when compared to the other study groups. Our results suggested that the heat stress has a more deleterious effect on the plasma biochemical parameters irrespective of the breed. In addition, among native breeds and crossbred, the native cattle showed minimum biochemical variations with the season and thus can be considered as higher thermo-adaptable than the crossbred cattle.","PeriodicalId":9208,"journal":{"name":"Biological Rhythm Research","volume":"53 1","pages":"1941 - 1949"},"PeriodicalIF":1.1,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41590065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-18DOI: 10.1080/09291016.2022.2102707
Prasanna Pal, A. Aggarwal, R. Deb
ABSTRACT A photoperiod is the time duration when animals are exposed to light in an entire day. An exposure of 16 hours or more is considered a long-day photoperiod and 8 hours of light is a short-day photoperiod. Exposure to light prevents the secretion of melatonin from the pineal gland. Melatonin can influence the release of several hormones, including prolactin, cortisol, kisspeptin, GnRH and others. Eventually, it can also affect the reproductive performance of the animal. Though cattle are not a seasonal breeder, photoperiod has an indirect role in the onset of puberty, pregnancy and parturition. It can also promote the growth rate of the heifers and enhance their reproductive capabilities, which are very much desired by the producers. Therefore, photoperiod can be used as an effective and non-invasive tool in the reproductive management of cattle.
{"title":"Effects of photoperiod on reproduction of cattle: a review","authors":"Prasanna Pal, A. Aggarwal, R. Deb","doi":"10.1080/09291016.2022.2102707","DOIUrl":"https://doi.org/10.1080/09291016.2022.2102707","url":null,"abstract":"ABSTRACT A photoperiod is the time duration when animals are exposed to light in an entire day. An exposure of 16 hours or more is considered a long-day photoperiod and 8 hours of light is a short-day photoperiod. Exposure to light prevents the secretion of melatonin from the pineal gland. Melatonin can influence the release of several hormones, including prolactin, cortisol, kisspeptin, GnRH and others. Eventually, it can also affect the reproductive performance of the animal. Though cattle are not a seasonal breeder, photoperiod has an indirect role in the onset of puberty, pregnancy and parturition. It can also promote the growth rate of the heifers and enhance their reproductive capabilities, which are very much desired by the producers. Therefore, photoperiod can be used as an effective and non-invasive tool in the reproductive management of cattle.","PeriodicalId":9208,"journal":{"name":"Biological Rhythm Research","volume":"53 1","pages":"1950 - 1960"},"PeriodicalIF":1.1,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49316502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-18DOI: 10.1080/09291016.2022.2101260
Baoli Zhang, Changyue Yu, Yingkai Xu, Ziwei Huang, Yuqiao Chai, Xueqing Hu, Lisong Li, N. Hu, Yingdong Li
ABSTRACT Photoperiod is an essential environmental factor that affects physiological activity and feeding behavior in crustaceans. The current study aimed to investigate the mechanism by which photoperiod influences gut bacterial community composition in the Chinese mitten crab (Eriocheir sinensis). In this study, high-throughput 16S rRNA sequencing was used to identify variations in E. sinensis gut bacteria under three different light: dark conditions (24 L:0 D, 0 L:24 D, and 12 L:12 D). Shannon and Chao1 indexes of community richness and diversity differed significantly between the complete light group and complete dark group on day 4, but these differences disappeared by day 6, suggesting that the gut bacterial community became disrupted on day 4, but adjusted to the new environment by day 6. Tenericutes and Proteobacteria were the dominant phyla under all conditions. Clostridium abundance increased significantly on day 6 under conditions of complete light and complete darkness. These data suggest that the biological clock of E. sinensis minimized changes in gut bacterial community composition under different light conditions. Considering that the gut bacterial community has profound effects on the host, understanding various mechanisms of its influence (including interactions with photoperiod) should be useful for improving E. sinensis aquaculture.
{"title":"Impacts of light on gut microbiota in Chinese mitten crab (Eriocheir sinensis)","authors":"Baoli Zhang, Changyue Yu, Yingkai Xu, Ziwei Huang, Yuqiao Chai, Xueqing Hu, Lisong Li, N. Hu, Yingdong Li","doi":"10.1080/09291016.2022.2101260","DOIUrl":"https://doi.org/10.1080/09291016.2022.2101260","url":null,"abstract":"ABSTRACT Photoperiod is an essential environmental factor that affects physiological activity and feeding behavior in crustaceans. The current study aimed to investigate the mechanism by which photoperiod influences gut bacterial community composition in the Chinese mitten crab (Eriocheir sinensis). In this study, high-throughput 16S rRNA sequencing was used to identify variations in E. sinensis gut bacteria under three different light: dark conditions (24 L:0 D, 0 L:24 D, and 12 L:12 D). Shannon and Chao1 indexes of community richness and diversity differed significantly between the complete light group and complete dark group on day 4, but these differences disappeared by day 6, suggesting that the gut bacterial community became disrupted on day 4, but adjusted to the new environment by day 6. Tenericutes and Proteobacteria were the dominant phyla under all conditions. Clostridium abundance increased significantly on day 6 under conditions of complete light and complete darkness. These data suggest that the biological clock of E. sinensis minimized changes in gut bacterial community composition under different light conditions. Considering that the gut bacterial community has profound effects on the host, understanding various mechanisms of its influence (including interactions with photoperiod) should be useful for improving E. sinensis aquaculture.","PeriodicalId":9208,"journal":{"name":"Biological Rhythm Research","volume":"54 1","pages":"141 - 152"},"PeriodicalIF":1.1,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44867212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-21DOI: 10.1080/09291016.2022.2090673
Anis Saddoud, Ghazi Rekik, Yosra Belkhir, Noureddine Kammoun, S. Hidouri, M. Chlif, M. Jarraya
ABSTRACT To explore how one night of total sleep deprivation (TSD) could affect cognitive and physical performances, as well as subjective experiences in 24 elite Kung-Fu athletes (age: 20.2 ± 1.76 years; body mass: 64.67 ± 6.52 kg; height: 1.71 ± 0.04 m). Participants completed, in a randomized counterbalanced order, two tests sessions in the late-afternoon (separated by 72-h recovery) under normal sleep (NS) and TSD conditions. Specific decision-making skills (decision accuracy (DA) and decision time (DT)), various anaerobic-exercises performance (i.e. seated medicine-ball throw (SMBT), horizontal jump (HJ), vertical jump (VJ), isometric back-muscles strength (IBMS), and isometric leg-muscles strength (ILMS)), mood states, and perceptual responses (attention and concentration) were assessed. The TSD was associated with lower values of vigor, and higher values of anxiety, depression, fatigue, anger, confusion, and total mood disturbance, compared to NS. The TSD resulted in lower attention and concentration, compared to NS. Similarly, lower performances of SMBT, HJ, VJ, and ILMS were recorded after TSD compared to NS. For cognitive performances, the TSD resulted in higher DA and lower DT, compared to NS. In summary, one night of TSD elicits negative effects on decision-making and anaerobic performance in Kung-Fu elites through disturbances in mood and attentional capacities.
{"title":"One night of total sleep deprivation impairs decision-making skills, anaerobic performances, mood states, and perceptual responses in elite Kung-Fu athletes","authors":"Anis Saddoud, Ghazi Rekik, Yosra Belkhir, Noureddine Kammoun, S. Hidouri, M. Chlif, M. Jarraya","doi":"10.1080/09291016.2022.2090673","DOIUrl":"https://doi.org/10.1080/09291016.2022.2090673","url":null,"abstract":"ABSTRACT To explore how one night of total sleep deprivation (TSD) could affect cognitive and physical performances, as well as subjective experiences in 24 elite Kung-Fu athletes (age: 20.2 ± 1.76 years; body mass: 64.67 ± 6.52 kg; height: 1.71 ± 0.04 m). Participants completed, in a randomized counterbalanced order, two tests sessions in the late-afternoon (separated by 72-h recovery) under normal sleep (NS) and TSD conditions. Specific decision-making skills (decision accuracy (DA) and decision time (DT)), various anaerobic-exercises performance (i.e. seated medicine-ball throw (SMBT), horizontal jump (HJ), vertical jump (VJ), isometric back-muscles strength (IBMS), and isometric leg-muscles strength (ILMS)), mood states, and perceptual responses (attention and concentration) were assessed. The TSD was associated with lower values of vigor, and higher values of anxiety, depression, fatigue, anger, confusion, and total mood disturbance, compared to NS. The TSD resulted in lower attention and concentration, compared to NS. Similarly, lower performances of SMBT, HJ, VJ, and ILMS were recorded after TSD compared to NS. For cognitive performances, the TSD resulted in higher DA and lower DT, compared to NS. In summary, one night of TSD elicits negative effects on decision-making and anaerobic performance in Kung-Fu elites through disturbances in mood and attentional capacities.","PeriodicalId":9208,"journal":{"name":"Biological Rhythm Research","volume":"54 1","pages":"102 - 116"},"PeriodicalIF":1.1,"publicationDate":"2022-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42130126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-17DOI: 10.1080/09291016.2022.2090672
Neslihan Durmuşoğlu Saltali, Nesibe Günay Molu, M. Ateş
ABSTRACT Parent-child sleep interaction is significant considering the high incidence of sleep problems in early childhood and the influence of parents on children’s sleep habits. This study aimed to investigate the psychometric properties of a Turkish adaptation of the Parent-Child Sleep Interaction Scale (PSIS) for preschoolers. We evaluated the internal consistency, test−retest reliability, construct validity, and criterion validity of the PSIS. The study was carried out with 424 parents of preschoolers between January and June 2021. The Confirmatory factor analysis (CFA) confirmed the three-dimensional and 12-item structure of the scale with acceptable fit values. The Cronbach’s alpha coefficients for the factors of the scale were 0.81 for sleep dependence, 0.76 for sleep reinforcement, and 0.72 for sleep conflict. Test-retest correlations were 0.87, 0.86, and 0.94, respectively (p < .05). The Pictorial Pediatric Symptom Checklist (PPSC) externalizing scores correlated significantly with the PSIS total scores and sleep conflict scores. The PPSC internalizing scores were significantly correlated with the PSIS total and sleep conflict scores. Our study is the first to establish the validity and reliability of the PSIS for Turkish preschoolers.
{"title":"Psychometric evaluation of the Turkish Adaptation of Parent-Child Sleep Interaction Scale (PSIS) for preschoolers","authors":"Neslihan Durmuşoğlu Saltali, Nesibe Günay Molu, M. Ateş","doi":"10.1080/09291016.2022.2090672","DOIUrl":"https://doi.org/10.1080/09291016.2022.2090672","url":null,"abstract":"ABSTRACT Parent-child sleep interaction is significant considering the high incidence of sleep problems in early childhood and the influence of parents on children’s sleep habits. This study aimed to investigate the psychometric properties of a Turkish adaptation of the Parent-Child Sleep Interaction Scale (PSIS) for preschoolers. We evaluated the internal consistency, test−retest reliability, construct validity, and criterion validity of the PSIS. The study was carried out with 424 parents of preschoolers between January and June 2021. The Confirmatory factor analysis (CFA) confirmed the three-dimensional and 12-item structure of the scale with acceptable fit values. The Cronbach’s alpha coefficients for the factors of the scale were 0.81 for sleep dependence, 0.76 for sleep reinforcement, and 0.72 for sleep conflict. Test-retest correlations were 0.87, 0.86, and 0.94, respectively (p < .05). The Pictorial Pediatric Symptom Checklist (PPSC) externalizing scores correlated significantly with the PSIS total scores and sleep conflict scores. The PPSC internalizing scores were significantly correlated with the PSIS total and sleep conflict scores. Our study is the first to establish the validity and reliability of the PSIS for Turkish preschoolers.","PeriodicalId":9208,"journal":{"name":"Biological Rhythm Research","volume":"54 1","pages":"86 - 101"},"PeriodicalIF":1.1,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43942310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-16DOI: 10.1080/09291016.2022.2088662
İsmail Önder, A. Önder, Ezgi Güven Yıldırım
ABSTRACT Academic burnout and engagement are critical factors in student success, school attendance and dropout. It is important to determine the variables associated with burnout and engagement to develop university students and their competencies. Therefore, the current study aims to elucidate the association of morningness-eveningness preferences, average sleep length (ASL) and social jetlag (SJL) with burnout and engagement in university students. The sample was composed of 270 university students. The composite scale of morningness (CSM), the Maslach burnout inventory-student scale, student engagement scale and a questionnaire were utilized. CSM total score was found to correlate with both burnout and engagement sub-domains significantly. In addition, CSM total score was a significant predictor in all burnout and engagement models. ASL was a significant predictor of exhaustion and cynicism while SJL was significant predictor of efficacy. Both ASL and SJL were significant predictors of silent in-class behaviours sub-domain of engagement. In sum, CSM total score was found to be the most significant predictor of both burnout and engagement compared to other study variables. Considering the relationships of CSM total score with burnout and engagement sub-dimensions, eveningness can be treated as an important risk factor for burnout and engagement in the context of university students.
{"title":"Burnout and engagement in university students: relationships with morningness-eveningness preferences, average sleep length and social jetlag","authors":"İsmail Önder, A. Önder, Ezgi Güven Yıldırım","doi":"10.1080/09291016.2022.2088662","DOIUrl":"https://doi.org/10.1080/09291016.2022.2088662","url":null,"abstract":"ABSTRACT Academic burnout and engagement are critical factors in student success, school attendance and dropout. It is important to determine the variables associated with burnout and engagement to develop university students and their competencies. Therefore, the current study aims to elucidate the association of morningness-eveningness preferences, average sleep length (ASL) and social jetlag (SJL) with burnout and engagement in university students. The sample was composed of 270 university students. The composite scale of morningness (CSM), the Maslach burnout inventory-student scale, student engagement scale and a questionnaire were utilized. CSM total score was found to correlate with both burnout and engagement sub-domains significantly. In addition, CSM total score was a significant predictor in all burnout and engagement models. ASL was a significant predictor of exhaustion and cynicism while SJL was significant predictor of efficacy. Both ASL and SJL were significant predictors of silent in-class behaviours sub-domain of engagement. In sum, CSM total score was found to be the most significant predictor of both burnout and engagement compared to other study variables. Considering the relationships of CSM total score with burnout and engagement sub-dimensions, eveningness can be treated as an important risk factor for burnout and engagement in the context of university students.","PeriodicalId":9208,"journal":{"name":"Biological Rhythm Research","volume":"54 1","pages":"70 - 85"},"PeriodicalIF":1.1,"publicationDate":"2022-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48492582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-31DOI: 10.1080/09291016.2022.2081400
Filipa Almeida, Luís Pires, Catarina Bettencourt, R. Almeida, D. Ruivo Marques, J. Leitão, A. Gomes
ABSTRACT Synchrony effects regarding mood diurnal fluctuations (i.e., better mood at optimal and worse mood at suboptimal times-of-day, corresponding to the interaction between chronotype* time-of-day) have been studied in adolescents and adults. However, evidence in children is lacking. We investigated the interactive effect of chronotype and time-of-day on primary school children’s momentary emotional states, in a naturalistic setting. From an initial pool of 298 3rd/4th graders (7–11 years-old), 134 Morning (M)-type and Evening (E)-type children were selected using the parental-report Children ChronoType Questionnaire (CCTQ). Potential covariates were assessed based on parental questionnaires. Students completed emotional states’ measures on the first (9 a.m.) and last lessons (4 p.m.) of the school day, in a counterbalanced order. Given the intercorrelations between emotional measures, a composite score of momentary emotional states was determined. There was a small-to-moderate significant interactive effect of chronotype*time-of-day in the overall momentary emotional states score. M/E-types showed better overall momentary emotional states when tested at their optimal time-of-day. Chronotype or time-of-day main effects were non-significant, and the overall momentary emotional states score did not correlate with sleep or psychopathological symptoms. In the present study, children overall momentary emotional states in a naturalistic setting varied depending on chronotype combined with time-of-day.
{"title":"Momentary emotional states in primary school children: combined effects of chronotype X time-of-day","authors":"Filipa Almeida, Luís Pires, Catarina Bettencourt, R. Almeida, D. Ruivo Marques, J. Leitão, A. Gomes","doi":"10.1080/09291016.2022.2081400","DOIUrl":"https://doi.org/10.1080/09291016.2022.2081400","url":null,"abstract":"ABSTRACT Synchrony effects regarding mood diurnal fluctuations (i.e., better mood at optimal and worse mood at suboptimal times-of-day, corresponding to the interaction between chronotype* time-of-day) have been studied in adolescents and adults. However, evidence in children is lacking. We investigated the interactive effect of chronotype and time-of-day on primary school children’s momentary emotional states, in a naturalistic setting. From an initial pool of 298 3rd/4th graders (7–11 years-old), 134 Morning (M)-type and Evening (E)-type children were selected using the parental-report Children ChronoType Questionnaire (CCTQ). Potential covariates were assessed based on parental questionnaires. Students completed emotional states’ measures on the first (9 a.m.) and last lessons (4 p.m.) of the school day, in a counterbalanced order. Given the intercorrelations between emotional measures, a composite score of momentary emotional states was determined. There was a small-to-moderate significant interactive effect of chronotype*time-of-day in the overall momentary emotional states score. M/E-types showed better overall momentary emotional states when tested at their optimal time-of-day. Chronotype or time-of-day main effects were non-significant, and the overall momentary emotional states score did not correlate with sleep or psychopathological symptoms. In the present study, children overall momentary emotional states in a naturalistic setting varied depending on chronotype combined with time-of-day.","PeriodicalId":9208,"journal":{"name":"Biological Rhythm Research","volume":"54 1","pages":"52 - 69"},"PeriodicalIF":1.1,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45661390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-02DOI: 10.1080/09291016.2022.2069646
Preeti Gupta, Ankit Sinha, S. Malik, S. Rani
ABSTRACT Over millennia, environmental light-dark cycle provided a dependable indicator of time of day. It showed the effects of light on physiology and behaviour in every animal. Furthermore, sunrise and sunset (dawn and dusk) usually refer to the duration of day length when the upper edge of the sun’s disk is on the horizon. Interestingly, before the onset of sunrise and after sunset there is twilight (dawn and dusk), during which there is natural light provided by the upper atmosphere. Evidences suggested that transitions (twilight) are more essential to synchronize organisms circadian (circa = about; dian = day) and circannual (circa = about; annum = year) rhythms (seasonal events). Overall, we say that all the characteristics of light pose major changes in the behavior and physiology of animals and plant system. In this mini-review, we discuss the noteworthy aspects of dawn and dusk chorus and the behavioural changes observed during this switching between day and night times.
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