PMID- 23219646
OWN - NLM
STAT- MEDLINE
DCOM- 20130820
LR  - 20130129
IS  - 1873-1465 (Electronic)
IS  - 0031-9406 (Linking)
VI  - 99
IP  - 1
DP  - 2013 Mar
TI  - Activity level predicts 6-minute walk distance in healthy older females: an 
      observational study.
PG  - 21-6
LID - S0031-9406(12)00023-5 [pii]
LID - 10.1016/j.physio.2011.11.004 [doi]
AB  - BACKGROUND: The 6-minute walk test (6MWT) is widely used in clinical practice and 
      research. Few studies have investigated activity level as a predictor of 6-minute 
      walk distance (6MWD), and existing predictive models do not allow for activity 
      level. OBJECTIVES: To evaluate if knowledge of the level of physical activity 
      enhanced the ability to predict 6MWD, and if the inclusion of activity level 
      added to the predictive accuracy of existing models for the 6MWT in healthy older 
      women; and to validate existent predictive models for 6MWD in a new sample. 
      DESIGN: Cross-sectional, observational study. SETTING: Four elderly communities. 
      PARTICIPANTS: A convenience sample of healthy active and sedentary older 
      non-smoking females with no musculoskeletal or lung disorders. MAIN OUTCOME 
      MEASURES: Age, height, weight, spirometric values and 6MWD. RESULTS: 
      Seventy-seven out of 154 females met the inclusion criteria [mean age 66 
      (standard deviation 6.5) years]: 46 were active and composed the active group and 
      31 were sedentary and composed the sedentary group. The active group had 
      significantly greater 6MWD than the sedentary group (mean 44m; 95% confidence 
      interval 14 to 73m; P<0.01). Previous published models that did not allow for 
      activity level either over or underestimated the 6MWD in this sample. The 
      activity level was shown to be an important independent predictor of 6MWD. 
      CONCLUSION: This study demonstrates the importance of considering the level of 
      physical activity when predicting 6MWD in older women.
CI  - Copyright (c) 2012 Chartered Society of Physiotherapy. Published by Elsevier Ltd. 
      All rights reserved.
FAU - Steffens, Daniel
AU  - Steffens D
AD  - The George Institute for Global Health, Sydney Medical School, The University of 
      Sydney, Sydney, NSW, Australia.
FAU - Beckenkamp, Paula R
AU  - Beckenkamp PR
FAU - Hancock, Mark
AU  - Hancock M
FAU - Paiva, Dulciane Nunes
AU  - Paiva DN
FAU - Alison, Jennifer A
AU  - Alison JA
FAU - Menna-Barreto, Sergio Saldanha
AU  - Menna-Barreto SS
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20120410
PL  - England
TA  - Physiotherapy
JT  - Physiotherapy
JID - 0401223
SB  - IM
MH  - Aged
MH  - Anthropometry
MH  - Brazil
MH  - Cross-Sectional Studies
MH  - Exercise Test
MH  - Female
MH  - Humans
MH  - Observation
MH  - Physical Fitness/*physiology
MH  - Predictive Value of Tests
MH  - Spirometry
MH  - Walking/*physiology
EDAT- 2012/12/12 06:00
MHDA- 2013/08/21 06:00
CRDT- 2012/12/11 06:00
PHST- 2011/06/02 00:00 [received]
PHST- 2011/11/16 00:00 [accepted]
PHST- 2012/12/11 06:00 [entrez]
PHST- 2012/12/12 06:00 [pubmed]
PHST- 2013/08/21 06:00 [medline]
AID - S0031-9406(12)00023-5 [pii]
AID - 10.1016/j.physio.2011.11.004 [doi]
PST - ppublish
SO  - Physiotherapy. 2013 Mar;99(1):21-6. doi: 10.1016/j.physio.2011.11.004. Epub 2012 
      Apr 10.