TY - JOUR
T1 - Tracking of Pedometer-Determined Physical Activity in Healthy Elderly Japanese People
AU - Yamamoto, Naofumi
AU - Shimada, Mieko
AU - Nakagawa, Naoki
AU - Sawada, Susumu S.
AU - Nishimuta, Mamoru
AU - Kimura, Yasuo
AU - Ohashi, Masaharu
AU - Asai, Hidenori
AU - Miyazaki, Hideo
AU - Lee, I. Min
AU - Blair, Steven N.
AU - Yoshitake, Yutaka
PY - 2015/10
Y1 - 2015/10
N2 - Background: Tracking refers to the tendency for an individual to maintain their rank within a group over time. This study longitudinally investigated the 8-year tracking of pedometer-determined physical activity among physically independent elderly Japanese people aged 72 to 80 years. Methods: Steps/day were measured when participants were aged 72 and assessed again after 2, 5, and 8 years. The number of participants with a 2-year follow-up (72 to 74 years) was 177 (101 males, 76 females), with a 5-year follow-up (72 to 77 years) was 183 people (110 males, 73 females), and with an 8-year follow-up (72 to 80 years) was 145 people (91 males, 54 females). Step counts were continuously measured for 1 week in January, April, July, and October during each year of assessment. Results: A high rank correlation coefficient for steps/day exceeding 0.60 was obtained at the 2-, 5- and 8-year follow-up examinations for both males and females. Conclusion: This study suggests that the rank within a group of pedometer-determined steps/day remains stable over up to 8 years in healthy Japanese people aged between 72 to 80 years old.
AB - Background: Tracking refers to the tendency for an individual to maintain their rank within a group over time. This study longitudinally investigated the 8-year tracking of pedometer-determined physical activity among physically independent elderly Japanese people aged 72 to 80 years. Methods: Steps/day were measured when participants were aged 72 and assessed again after 2, 5, and 8 years. The number of participants with a 2-year follow-up (72 to 74 years) was 177 (101 males, 76 females), with a 5-year follow-up (72 to 77 years) was 183 people (110 males, 73 females), and with an 8-year follow-up (72 to 80 years) was 145 people (91 males, 54 females). Step counts were continuously measured for 1 week in January, April, July, and October during each year of assessment. Results: A high rank correlation coefficient for steps/day exceeding 0.60 was obtained at the 2-, 5- and 8-year follow-up examinations for both males and females. Conclusion: This study suggests that the rank within a group of pedometer-determined steps/day remains stable over up to 8 years in healthy Japanese people aged between 72 to 80 years old.
KW - Aging
KW - Follow-up study
KW - Inactivity
KW - Low-intensity physical activity
KW - Stability
KW - Walking
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UR - http://www.scopus.com/inward/citedby.url?scp=84958687066&partnerID=8YFLogxK
U2 - 10.1123/jpah.2014-0450
DO - 10.1123/jpah.2014-0450
M3 - Article
C2 - 25599246
AN - SCOPUS:84958687066
VL - 12
SP - 1421
EP - 1429
JO - Journal of Physical Activity and Health
JF - Journal of Physical Activity and Health
SN - 1543-3080
IS - 10
ER -