A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
The Associations of Activity Fragmentation with Physical and Mental Fatigability among Community-Dwelling 75-, 80- and 85-Year-Old People (2020)

Palmberg, L., Rantalainen, T., Rantakokko, M., Karavirta, L., Siltanen, S., Skantz, H., Saajanaho, M., Portegijs, E., & Rantanen, T. (2020). The Associations of Activity Fragmentation with Physical and Mental Fatigability among Community-Dwelling 75-, 80- and 85-Year-Old People. Journals of Gerontology Series A : Biological Sciences and Medical Sciences, 75(9), e103-e110. https://doi.org/10.1093/gerona/glaa166

JYU-tekijät tai -toimittajat

Palmberg, Lotta
Rantalainen, Timo
Karavirta, Laura
Siltanen, Sini
Leppä, Heidi
Saajanaho, Milla
Portegijs, Erja
Rantanen, Taina

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Palmberg, Lotta; Rantalainen, Timo; Rantakokko, Merja; Karavirta, Laura; Siltanen, Sini; Skantz, Heidi; Saajanaho, Milla; Portegijs, Erja; Rantanen, Taina

Lehti tai sarja: Journals of Gerontology Series A : Biological Sciences and Medical Sciences

ISSN: 1079-5006

eISSN: 1758-535X

Julkaisuvuosi: 2020

Ilmestymispäivä: 02.07.2020

Volyymi: 75

Lehden numero: 9

Artikkelin sivunumerot: e103–e110

Kustantaja: Oxford University Press (OUP)

Julkaisumaa: Yhdysvallat (USA)

Julkaisun kieli: englanti

DOI: https://doi.org/10.1093/gerona/glaa166

Julkaisun avoin saatavuus: Ei avoin

Julkaisukanavan avoin saatavuus:

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/71071

Tiivistelmä

Background
Fatigue related to task standardized by duration and intensity, termed fatigability, could manifest as shortening of activity bouts throughout the day causing daily activity to accumulate in a more fragmented pattern. Our purpose was to study the association of activity fragmentation with physical and mental dimensions of fatigability.

Methods
A cross-sectional study of 485 community-dwelling 75-,80- and 85-year-old people using a thigh-worn accelerometer for 3 to 7 days. Activity fragmentation was studied as Active-to-Sedentary Transition Probability (ASTP) for two operational definitions of physical activity: accelerations equivalent to at least light physical activity, and for upright posture. Physical fatigability was assessed as perceived exertion fatigability, performance fatigability severity, and with the Physical Fatigue Subscale of the Situational Fatigue Scale (SFS). Mental fatigability was assessed with the Mental Fatigue Subscale of the SFS and as a decrease in perceived mental alertness after a six-minute walk test (6MWT).

Results
Higher activity fragmentation was associated with higher self-reported physical fatigability, perceived exertion fatigability and performance fatigability severity, independent of total activity minutes (β 0.13-0.33, p<0.05 for all). Higher activity fragmentation was not associated with mental fatigability in the fully adjusted models. The associations with fatigability indices were similar for both activity fragmentation indicators. Associations of activity fragmentation and performance fatigability severity were similar also among those with the highest intensity-based physical activity volume.

Conclusions
The findings provide support that studying fragmented activity patterns can be useful in identifying those at risk for high fatigability, even among those with relatively high physical activity level.

YSO-asiasanat: fyysinen aktiivisuus; liikunta; väsymys; ikääntyneet; fyysinen hyvinvointi; henkinen hyvinvointi

Vapaat asiasanat: activity patterns; adaptive strategies; fatigue; physical activity

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