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Table 5 Mediation and moderation models for verbal working memory

From: A citizen science study of short physical activity breaks at school: improvements in cognition and wellbeing with self-paced activity

 

Total effect

Direct effect

Indirect effect

Beta (SE)

95% CI

p value

Beta (SE)

95% CI

p value

Beta (SE)

95% CI

Beta (SE)

95% CI

Control vs. self-paced

− 1.47 (0.01)

− 1.50 to − 1.44

0.000

− 1.43 (0.50)

− 2.42 to − 0.44

0.0046

    

 Affect

      

− 0.11 (0.06)

− 0.28 to − 0.02

  

 Alertness

      

0.07 (0.11)

− 0.14 to 0.30

  

 VO2 max → control

        

0.18 (0.08)

0.01 to 0.34

 VO2 max → SPA

        

− 0.02 (0.09)

− 0.20 to 0.16

Control vs. bleep test

0.34 (0.02)

0.31 to 0.37

0.000

0.33 (0.52)

− 0.70 to 1.36

0.5271

    

 Affect

      

0.02 (0.03)

− 0.01 to 0.13

  

 Alertness

      

− 0.01 (0.05)

− 0.12 to 0.07

  

 VO2 max → control

        

0.10 (0.08)

− 0.06 to 0.26

 VO2 max → bleep

        

0.06 (0.08)

− 0.10 to 0.23

Self-paced vs. bleep test

2.50 (0.01)

2.47 to 2.52

0.000

2.44 (0.51)

1.43 to 3.44

0.000

    

 Affect

      

0.14 (0.07)

0.04 to 0.31

  

 Alertness

      

− 0.08 (0.06)

− 0.23 to 0.02

  

 VO2 max → SPA

        

0.01 (0.08)

− 0.13 to 0.16

 VO2 max → bleep

        

0.08 (0.08)

− 0.07 to 0.23

  1. VO2 max = age-adjusted VO2 max and considered to be constant (e.g. not a repeated measure) therefore entered as a moderator in analysis