Gece Geç Saatlerde Sinema Izlemek, Ertesi Sabah Kortizol Uyanma Yanıtı Ve Kalp Hızı Değişkenliğini Etkilemedi

Amaç: Gece geç saatlerde ekran (sinema) seyretmenin, ertesi gün hipotalamus-hipofiz-adrenal aks (HPA) ve otonom sinir sistemi(OSS) aktivitesi üzerine etkileri bilinmiyor. Bu nedenle, mevcut çalışmanın amacı, uyku kalitesi, OSS aktivitesinin belirteci olan kalphızı değişkenliği (KHD) ve HPA aksının belirteci olan kortizol uyanma yanıtı (KUY) üzerine gece geç saatlerde sinema izlemeninetkilerini incelemekti.Materyal Metod: Bu çalışmada Tıp Fakültesi öğrencileri (n=22), biri kontrol günü ve takiben sinema izleme günü olmak üzere ikiardışık gün takip edildi. Her gün, uyku ölçekleri dolduruldu; KUY ölçümü için uyandıktan sonra 0, 15, 30 ve 60. dakikalarda tükürükörnekleri toplandı ve KHD belirlemek için 5 dakikalık EKG kaydı alındı. Sinema izleme günü, film olarak 140 dk süren “Hızlı ve Öfkeli7” filmi saat 21:00 da hep birlikte izlendi.Bulgular: Gece geç saatlerde sinema izlemek, zaman ve frekans bağımlı KHD parametrelerini, uyku parametrelerini (uyku zamanı,süresi, uyku bozukluğu, uyanma problemleri) ve KUY (ortalama, eğri altında kalan alan) etkilemedi (p>0.05).Sonuç: Sonuçlar, kişinin gece geç saatlerde uyumaya alışkın olması durumunda, gece geç saatlerde sinema izlemenin ertesi sabahHPA ve OSS aktivitelerini etkilemediğini göstermektedir. Ek olarak, bir grup arkadaşıyla birlikte bir film izlemenin, gece geç saatlerdeuyumanın olumsuz etkilerine karşı koyan eğlenceli bir etkinlik olduğu düşünülebilir.

Anahtar Kelimeler:

Gece geç saatlerde sinema, kortizol uyanma yanıtı (KUY), kalp hızı değişkenliği (KHD)

Late-night cinema watching did not affect cortisol awakening response and heart rate variability in the next morning

Objective Effect of watching a screen late in the night on the hypothalamo-pituitary-adrenal axis (HPA) and autonomous nervous system (ANS) activity in the next morning is not known. Aim of the current study was, therefore, to measure effects of late-night cinema watching on sleep quality, cortisol awakening response (CAR) as an indicator of HPA and heart rate variability (HRV) as an indicator of ANS activity. Material-Method Medical students (n=22, 20-26 year-old) were followed for two consecutive days: a control day followed by a cinema watching day. In each day, sleep dairies were filled; salivary samples were taken at 0, 15, 30 and 60 min post-awakening for measurement of CAR; and electrocardiogram was recorded for 5 min for determination of HRV. A film lasting 140 min, ‘Fast and Furious 7’, was watched altogether at the last 09:00 p.m session. Results Late-night cinema watching did not affect CAR (mean, area under the curve) and sleep parameters (time, duration, disturbed sleep, awakening problems) and time- and frequency-domain parameters of HRV (p>0.05). Conclusion The results suggest that late-night cinema watching does not affect HPA and ANS activities in the next morning if the person is accustomed to sleeping late in the night. Additionally, it might be speculated that watching a film with a groups of friends is an entertaining activity counteracting the negative effects of late-night sleeping.

Keywords:

Late night cinema, cortisol awakening response, heart rate variability,

PDF

___

Referans1: National Sleep Foundation. Sleep in America Poll. Washington. DC: National Sleep Foundation, 2006.
Referans2: Shochat T, Flint Bretler O, Tzischinsky O. Sleep patterns, electronic media exposure and daytime sleep-related behaviours among Israeli adolescents. Acta Paediatrica 2010, 99: 1396- 400.
Referans3: Van den Bulck J. Television viewing, computer game playing, and internet use and self-reported time to bed and time out of bed in secondary-school children. Sleep 2004, 27: 101-4.
Referans4: Owens J, Maxim R, McGuinn M, Nobile C, Msall M. Television-viewing habits and sleep disturbance in school children. Pediatrics 1999, 104: e27.
Referans5: Van Cauter E, Spiegel K, Tasali E, Leproult R. Metabolic consequences of sleep and sleep loss. Sleep Med 2008, 9: 23-8.
Referans6: Sekine M, Yamagami T, Handa K, Saito T, Nanri S, Kawaminami K, Tokui N, Yoshida K, Kagamimori S. A dose-response relationship between short sleeping hours and childhood obesity: Results of the Toyama Birth Cohort Study. Int J Child Health Hum Dev 2002, 28: 163-70.
Referans7: Uçar C, Özgöçer T, Yildiz S. Late-night exercise affects the autonomic nervous system activity but not the hypothalamo-pituitary-adrenal axis in the next morning. J Sports Med Phys Fitness. 2018;58(1-2):57–65.
Referans8: Ozgocer T, Ucar C, Yildiz S. Cortisol awakening response is blunted and pain perception is increased during menses in cyclic women. Psychoneuroendocrinology. 2017;77:158–64.
Referans9: Marques AH, Silverman MN, Sternberg EM. Evaluation of stress systems by applying noninvasive methodologies: measurements of neuroimmune biomarkers in the sweat, heart rate variability and salivary cortisol. Neuroimmunomodulation. 2010;17(3):205-8.
Referans10: Shaffer F, McCraty R, Zerr CL. A healthy heart is not a metronome: an integrative review of the heart's anatomy and heart rate variability. Front Psychol. 2014;5:1040.
Referans11: Ozgocer T, Yildiz S, Uçar C. Development and validation of an enzyme-linked immunosorbent assay for detection of cortisol in human saliva. J Immunoassay Immunochem. 2017;38(2):147–64.
Referans12: Pruessner JC, Kirschbaum C, Meinlschmid G, Hellhammer DH. Two formulas for computation of the area under the curve represent measures of total hormone concentration versus time-dependent change. Psychoneuroendocrinology. 2003;28(7):916–31.
Referans13: Hansen AM, Thomsen JF, Kaergaard A, Kolstad HA, Kaerlev L, Mors O, et al. Salivary cortisol and sleep problems among civil servants. Psychoneuroendocrinology. 2012;37: 1086-95.
Referans14: McHale SM, Blocklin MK, Walter KN, Davis KD, Almeida DM, Klein LC. The role of daily activities in youths' stress physiology. J Adolesc Health 2012, 51(6): 623-8.
Referans15: Chaput JP, Visby T, Nyby S, Klingenberg L, Gregersen NT, Tremblay A, Astrup A, Sjödin A. Video game playing increases food intake in adolescents: a randomized crossover study. Am J Clin Nutr 2011, 93(6): 1196-203.
Referans16: Ivarsson M, Anderson M, Akerstedt T, Lindblad F. Playing a violent television game does not affect saliva cortisol. Acta Paediatr 2009, 98(6): 1052-3.
Referans17: Ivarsson M, Anderson M, Akerstedt T, Lindblad F. Playing a violent television game affects heart rate variability. Acta Paediatr 2008, 98(1): 166-72.