The purpose of the current study is to investigate relationships between the Shuttle Stamina Walk Test (SSTw; in which the running in the Shuttle Stamina Test was changed to walking) for the elderly from the relation among the SSTw, the 6-min walk test, and oxygen uptake in older adults.
The subjects were 399 persons (276 males aged 69.4 ± 3.52 years and 123 females aged 69.5 ± 4.29 years); all were over 65 years old. The method of SSTw is to measure the distance when they shuttle along a 10-m walking course for 3 min. The 6-min walk test is done by the method of the Ministry of Education, Culture, Sports, Science, and Technology. VO2max was measured by the Balke protocol, and VO2peak values during both walk tests were estimated by Leger’s method using backward extrapolation of the VO2recovery curve.
The results have shown that: 1) the distance achieved in the SSTw test and 6-min walk test were significantly correlated in both males and females. 2) VO2max was significantly correlated to the distance of SSTw and also to the 6-min walk test. The correlation of VO2max and SSTw exceeded the correlation of VO2max and the 6-min walk test (although there were no significant differences in the statistical probability levels). 3) VO2peak was 74.3 ± 12.1% of VO2max in SSTw and 69.8 ± 14.1% of VO2max in the 6-min walk test. There were no significant differences between VO2peak values in the 2 tests, however, a trend was noted where the SSTw indicated a higher value than for the 6-min walk test.
From these results, it was concluded that the SSTw and 6-min walk test were apparently valid physiological measures for the elderly. Moreover, the SSTw can be used to accurately estimate endurance capacity, and it is a more convenient assessment for people than the 6-min walk test.