Table 6 Bootstrapped indirect and direct effects analyses for each LEFAGES-II task.

From: Soft tissue radiodensity parameters mediate the relationship between self-reported physical activity and lower extremity function in AGES-Reykjavík participants

 

Fast gait speed (GSF)

Normal gait speed (GSN)

Isometric leg strength (STR)

Timed up-and-go (TUG)

Effect

95% CI

Effect

95% CI

Effect

95% CI

Effect

95% CI

Indirect

TotalInd

0.0051

[0.0035, 0.0067]

0.0041

[0.0030, 0.0053]

2.1748

[1.5200, 2.9146]

− 0.0691

[− 0.0905, − 0.0497]

\({N}_{m}\)

0.0036

[0.0023, 0.0050]

0.0026

[0.0017, 0.0036]

1.5060

[0.9527, 2.1404]

− 0.0398

[− 0.0562, − 0.0255]

\({\mu }_{m}\)

0.0012

[0.0006, 0.0020]

0.0012

[0.0006, 0.0019]

0.5414

[0.2747, 0.8589]

− 0.0233

[− 0.0366, − 0.0123]

Bootstrap coefficients with 95% CIs

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Direct

PAAGES-I

0.0228

[0.0174, 0.0281]

0.0182

[0.0142, 0.0221]

4.6179

[2.8640, 6.3717]

− 0.2676

[− 0.3473, − 0.1878]

  1. 95% CI values for all indirect and direct effects did not include zero; therefore, all model effects are significant.
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