Power law temporal auto-correlations in day-long records of human physical activity and their alteration with disease

L. A. Nunes Amaral; D. J. Bezerra Soares; L. R. Da Silva; L. S. Lucena; M. Saito; H. Kumano; N. Aoyagi; Y. Yamamoto

doi:10.1209/epl/i2003-10227-7

Power law temporal auto-correlations in day-long records of human physical activity and their alteration with disease

L. A. Nunes Amaral^*, D. J. Bezerra Soares, L. R. Da Silva, L. S. Lucena, M. Saito, H. Kumano, N. Aoyagi, Y. Yamamoto

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

We investigate long-duration time series of human physical activity under three different conditions: healthy individuals in i) a constant routine protocol and ii) in regular daily routine, and iii) individuals diagnosed with multiple chemical sensitivities. We find that in all cases human physical activity displays power law decaying temporal auto-correlations. Moreover, we find that under regular daily routine, time correlations of physical activity are significantly different during diurnal and nocturnal periods but that no difference exists under constant routine conditions. Finally, we find significantly different auto-correlations for diurnal records of patients with multiple chemical sensitivities.

Original language	English
Pages (from-to)	448-454
Number of pages	7
Journal	Europhysics Letters
Volume	66
Issue number	3
DOIs	https://doi.org/10.1209/epl/i2003-10227-7
Publication status	Published - 2004 May 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1209/epl/i2003-10227-7

Cite this

Power law temporal auto-correlations in day-long records of human physical activity and their alteration with disease. / Nunes Amaral, L. A.; Bezerra Soares, D. J.; Da Silva, L. R.; Lucena, L. S.; Saito, M.; Kumano, H.; Aoyagi, N.; Yamamoto, Y.

In: Europhysics Letters, Vol. 66, No. 3, 01.05.2004, p. 448-454.

Research output: Contribution to journal › Article › peer-review

@article{bdd5ded17d514eab9dac9f807e783cb9,

title = "Power law temporal auto-correlations in day-long records of human physical activity and their alteration with disease",

abstract = "We investigate long-duration time series of human physical activity under three different conditions: healthy individuals in i) a constant routine protocol and ii) in regular daily routine, and iii) individuals diagnosed with multiple chemical sensitivities. We find that in all cases human physical activity displays power law decaying temporal auto-correlations. Moreover, we find that under regular daily routine, time correlations of physical activity are significantly different during diurnal and nocturnal periods but that no difference exists under constant routine conditions. Finally, we find significantly different auto-correlations for diurnal records of patients with multiple chemical sensitivities.",

author = "{Nunes Amaral}, {L. A.} and {Bezerra Soares}, {D. J.} and {Da Silva}, {L. R.} and Lucena, {L. S.} and M. Saito and H. Kumano and N. Aoyagi and Y. Yamamoto",

year = "2004",

month = may,

day = "1",

doi = "10.1209/epl/i2003-10227-7",

language = "English",

volume = "66",

pages = "448--454",

journal = "EPL",

issn = "0295-5075",

publisher = "IOP Publishing Ltd.",

number = "3",

}

TY - JOUR

T1 - Power law temporal auto-correlations in day-long records of human physical activity and their alteration with disease

AU - Nunes Amaral, L. A.

AU - Bezerra Soares, D. J.

AU - Da Silva, L. R.

AU - Lucena, L. S.

AU - Saito, M.

AU - Kumano, H.

AU - Aoyagi, N.

AU - Yamamoto, Y.

PY - 2004/5/1

Y1 - 2004/5/1

N2 - We investigate long-duration time series of human physical activity under three different conditions: healthy individuals in i) a constant routine protocol and ii) in regular daily routine, and iii) individuals diagnosed with multiple chemical sensitivities. We find that in all cases human physical activity displays power law decaying temporal auto-correlations. Moreover, we find that under regular daily routine, time correlations of physical activity are significantly different during diurnal and nocturnal periods but that no difference exists under constant routine conditions. Finally, we find significantly different auto-correlations for diurnal records of patients with multiple chemical sensitivities.

AB - We investigate long-duration time series of human physical activity under three different conditions: healthy individuals in i) a constant routine protocol and ii) in regular daily routine, and iii) individuals diagnosed with multiple chemical sensitivities. We find that in all cases human physical activity displays power law decaying temporal auto-correlations. Moreover, we find that under regular daily routine, time correlations of physical activity are significantly different during diurnal and nocturnal periods but that no difference exists under constant routine conditions. Finally, we find significantly different auto-correlations for diurnal records of patients with multiple chemical sensitivities.

UR - http://www.scopus.com/inward/record.url?scp=2442706344&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2442706344&partnerID=8YFLogxK

U2 - 10.1209/epl/i2003-10227-7

DO - 10.1209/epl/i2003-10227-7

M3 - Article

AN - SCOPUS:2442706344

VL - 66

SP - 448

EP - 454

JO - EPL

JF - EPL

SN - 0295-5075

IS - 3

ER -

Power law temporal auto-correlations in day-long records of human physical activity and their alteration with disease

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this