REFERENCES
- Aschoff J, Gerecke U, Wever R. (1967). Desynchronization of human circadian rhythms. Jap J Physiol. 17:450–7
- Barro RJ, Lee JW. (2011). A new data set of educational attainment in the World, 1950–2010. Working Paper No. 15902. The National Bureau of Economic Research
- Binkley S, Tome MB, Crawford D, Mosher K. (1990). Human daily rhythms measured for one year. Physiol Behav. 48:293–8
- Borisenkov MF. (2011). The pattern of entrainment of the human sleep–wake rhythm by the natural photoperiod in the North. Chronobiol Int. 28:921–9
- Chandrashekaran MK, Marimuthu G, Geetha L. (1997). Correlations between sleep and wake in internally synchronized and desynchronized circadian rhythms in humans under prolonged isolation. J Biol Rhythms. 12:26–33
- Church TS, Thomas DM, Tudor-Locke C, et al. (2011). Trends over 5 decades in US occupation-related physical activity and their associations with obesity. PLoS One. 6:e19657
- Dunlap JC, Loros JJ, DeCoursey PJ. (2004). Chronobiology: Biological timekeeping. Sunderland, MA: Sinauer
- Eastman CI, Suh C, Tomaka VA, Crowley SJ. (2015). Circadian rhythm phase shifts and endogenous free-running circadian period differ between African-Americans and European-Americans. Sci Rep. 5:8381
- Endo T, Honma S, Hashimoto S, Honma K. (1999). After-effect of entrainment on the period of human circadian system. Jap J Physiol. 49:425–30
- Energy Information Administration. (2014). Country analysis: Ghana. Washington, DC: US Department of Energy. Available from: http://www.eia.gov/countries/country-data.cfm?fips=gh [last accessed 20 March 2015]
- Gander PH, Connell LJ, Graeber RC. (1986). Masking of the circadian rhythm of heart rate and core temperature by the rest–activity cycle in man. J Biol Rhythms. 1:119–35
- Giannotti F, Cortesi F, Sebastiani T, Ottaviano S. (2002). Circadian preference, sleep and daytime behaviour in adolescence. J Sleep Res. 11:191–9
- González MC, Hidalgo CA, Barabási AL. (2008). Understanding individual human mobility patterns. Nature. 453:779–82
- Hébert M, Dumont M, Paquet J. (1998). Seasonal and diurnal patterns of human illumination under natural conditions. Chronobiol Int. 15:59–70
- Horne JA, Östberg O. (1977). Individual differences in human circadian rhythms. Biol Psychol. 5:179–90
- Jean-Louis G, Kripke DF, Ancoli-Israel S, et al. (2000). Sleep duration, illumination, and activity patterns in a population sample: Effects of gender and ethnicity. Biol Psychiatry. 47:921–7
- Koukkari WL, Sothern RB. (2006). Introducing biological rhythms. New York: Springer
- Kriebel J. (1974). Changes in internal phase relationships during isolation. In Scheving LE, Halberg F, Pauly JE, eds. Chronobiology. Tokyo: Igaku Shoin, pp. 451–9
- Laberge L, Carrier J, Lespérance P, et al. (2000). Sleep and circadian phase characteristics of adolescent and young adult males in a naturalistic summertime condition. Chronobiol Int. 17:489–501
- Luke A, Bovet P, Forrester TE, et al. (2011). Protocol for the modeling the epidemiologic transition study: A longitudinal observational study of energy balance and change in body weight, diabetes and cardiovascular disease risk. BMC Public Health. 11:927
- Luke A, Bovet P, Plange-Rhule J, et al. (2014). A mixed ecologic-cohort comparison of physical activity and weight among young adults from five populations of African origin. BMC Public Health. 14:397
- Miguel M, Oliveira VC, Pereira D, Pedrazzoli M. (2014). Detecting chronotype differences associated to latitude: A comparison between Horne–Östberg and Munich Chronotype questionnaires. Ann Hum Biol. 41:105–8
- Natale V. (2002). Circadian motor asymmetries in humans. Neurosci Lett. 320:102–4
- Nelson W, Tong YL, Lee JK, Halberg F. (1979). Methods for cosinor rhythmometry. Chronobiologia. 6:305–23
- Park YM, Matsumoto K, Seo YJ, Shinkoda H. (1997). Scores on morningness–eveningness and sleep habits of Korean students, Japanese students, and Japanese workers. Percept Mot Skills. 85:143–54
- Portaluppi F, Smolensky MH, Touitou Y. (2010). Ethics and methods for biological rhythm research on animals and human beings. Chronobiol Int. 27:1911–29
- Refinetti R. (1995). Persistence of synchronization of the daily rhythms of body temperature and sleep–wake in college students. Biol Rhythm Res. 26:532–40
- Refinetti R. (2006). Circadian Physiology. 2nd edition. Boca Raton, FL: CRC Press
- Refinetti R, Cornélissen G, Halberg F. (2007). Procedures for numerical analysis of circadian rhythms. Biol Rhythm Res. 38:275–325
- Roenneberg T, Wirz-Justice A, Merrow M. (2003). Life between clocks: daily temporal patterns of human chronotypes. J Biol Rhythms. 18:80–90
- Roenneberg T, Kuehnle T, Juda M, et al. (2007). Epidemiology of the human circadian clock. Sleep Med Rev. 11:429–38
- Schneider CM, Belik V, Couronné T, et al. (2013). Unravelling daily human mobility motifs. J R Soc Interface. 10:20130246
- Song C, Qu Z, Blumm N, Barabási AL. (2010). Limits of predictability in human mobility. Science. 327:1018–21
- Spalding A, Kernan J, Lockette W. (2009). The metabolic syndrome: A modern plague spread by modern technology. J Clin Hypertens. 11:755–60
- Yoneyama S, Hashimoto S, Honma K. (1999). Seasonal changes of human circadian rhythms in Antarctica. Am J Physiol Reg Integr Comp Physiol. 277:R1091–7