Submitted on: 03 October 2017.
Revised on: 11 November 2017.
Accepted on: 16 December 2017.
___________________JOURNAL OF AGING AND PHYSICAL ACTIVITY
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Submitted on: 25 May 1999.
Revised on: 30 June 1999.
Accepted on: 21 August 1999.
___________________JOURNAL OF AGING AND PHYSICAL ACTIVITY
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