Background
Methods
Study sample
The Inter Walk app
Procedures
The Inter Walk Fitness test (IWFT)
Measurement of peak (VO2peak) and maximal oxygen consumption (VO2max)
Anthropometry
Prediction of VO2peak during the IWFT
Statistical analyses
Results
Sample characteristics
Total | Men | Women | |
---|---|---|---|
N
| 27 | 9 | 18 |
Age (years)
| 64.2 (5.9) | 65.9 (6.8) | 63.3 (5.5) |
Level (no exp./previous exp.)
| 16/11 | 5/4 | 11/7 |
Time since T2D diagnosis
| 7.9 (5.0) | 8.3 (5.3) | 7.6 (4.9) |
Body weight (kg)
| 83.2 (14.9)* | 90.0 (13.4) | 79.7 (14.7) |
Body height (cm)
| 166.6 (7.7)* | 175.2 (4.0) | 162.2 (4.7) |
Body mass index (kg/m
2
)
| 30.0 (5.1) | 29.3 (4.9) | 30.3 (5.3) |
HbA1c (mmol/mol)
| 47.0 [41.0;57.0] | 49.0 [45.0; 57.0] | 47.0 [38.0;50.0] |
HbA1c (%)
| 6.4 [5.9; 7.4] | 6.6 [6.3; 7.4] | 6.4 [5.6; 6.7] |
Anti-diabetic medication (yes/no))
| 23/4 | 6/2 | 16/2 |
VO
2max
(ml/min)
| 1940 (457)* | 2314 (427) | 1773 (369) |
Relative VO
2max
(ml/kg/min)
| 23.3 (4.6) | 25.3 (4.6) | 22.5 (3.9) |
Effects of encouragement and placement of the smartphone on VO2peak and vector magnitude
VO2peak(ml/min) | Vector magnitude (LP) (G) | Vector magnitude (UP) (G) | |
---|---|---|---|
N | 27 | 27 | 27 |
No encouragement | 1602 (427) | 0.30 [0.22;0.46] | 0.17 [0.14;0.20]* |
Encouragement | 1651 (436) | 0.39 [0.25;0.51] | 0.19 [0.14;0.24]* |