Table 3 Hierachical linear regression results of self-reported and device-based measures of physical activity (PA) on health-related quality of life (HRQoL) adjusted by age and sex (not displayed)

Overall HRQoL

 Model 1

.047

3

974

< .001***

 PA (self-reported)

.004

.001

.083

2.687

.007**

 Model 2

.373

.000

1

970

.541

 PA (self-reported)

.004

.001

.088

2.719

.007**

 PA (device-based)

− .001

.002

− .021

− .611

.541

Physical well-being

 Model 1

.128

3

995

< .001**

 PA (self-reported)

.012

.001

.253

8.492

< .001***

 Model 2

7.603

.007

1

995

.006**

 PA (self-reported)

.011

.001

.233

7.642

< .001***

 PA (device-based)

.006

.002

.008

2.757

.006**

Psychological well-being

 Model 1

.059

3

1000

< .001***

 PA (self-reported)

.002

.001

.051

1.653

.099

 Model 2

.505

.000

1

999

.477

 PA (self-reported)

.003

.001

.056

1.773

.077

 PA (device-based)

− .002

.002

− .024

− .711

.477

Autonomy and Parent Relations

 Model 1

.004

3

993

.083

 PA (self-reported)

.002

.001

.054

1.694

.090

 Model 2

.798

.001

1

992

.372

 PA (self-reported)

.003

.002

.061

1.857

.064

 PA (device-based)

− .002

.002

− .031

− .893

.372

Social Support and Peers

 Model 1

.020

3

996

< .001***

 PA (self-reported)

.006

.001

.126

3.996

< .001***

 Model 2

.014

.000

1

995

.905

 PA (self-reported)

.006

.001

.125

3.859

< .001***

 PA (device-based)

.000

.002

.004

.120

.905

School environment

 Model 1

.036

3

982

< .001***

 PA (self-reported)

.003

.001

.067

2.114

.035*

 Model 2

.878

.001

1

981

.349

 PA (self-reported)

.003

.001

.074

2.273

.023*

 PA (device-based)

− .002

.002

− .032

− .937

.349