Fit4SE 16 juni 2015 Dr. Johan de Jong, Lectoraat Praktijkgerichte Sportwetenschap

Dr. Miriam van Ittersum, Quantified Self Institute

Agenda

• Kennismakingsrondje

• Korte toelichting op FIT4SE

• Zephyr Brandweer/IAG

• QSI proeverij

• Het nieuwe gezonde werken

Partners FIT4SE

• Hanzehogeschool Groningen:

Lectoraat Praktijkgerichte Sportwetenschap

Kenniscentrum Arbeid

Kenniscentrum ondernemerschap

Quantified Self Institute

• Bedrijven

• Beroepspraktijk

Functional fitheidsmonitor + beïnvloeden

• Belasting & belastbaarheid sport & werk

• Technologie N=1

• Monitor test/training/real life feedback + digitaal

advies/persoonlijk

• Veldtest

• Brandweer = casus opschalen naar andere beroepen

Monitoring (physical) stress in professional fire fighters

Astrid de Vries MSc, Johan de Jong PhD

Hanze University of Applied Sciences Groningen

7

•  Background  •  Zephyr  Bioharness  •  Acute  stress  (controlled  se8ng)  •  (Physical)  stress  during  24  hours  shi=s    •  General  conclusion  and  discussion    

Content  

Background  

•  Extreme  situaCons    

Zephyr  Bioharness  

•  Zephyr  Bioharness  –  Heart  rate  –  Breathing  rate  –  Heart  rate  variability    –  Accelerometer  –  GPS    

 

Zephyr  Bioharness  

•  Heart  rate  is  valid  at  different  intensity  levels  (Kim  et  al,  2012;  own  research)  

–  At  rest  validity  least  confirmed  

•  Respiratory  rate  also  valid  at  different  intensity  levels  (Kim  et  al,  2012;  Hailstone  and  Kilding  2011;  own  research)  

–   could  be  underesCmaCon    

   

   

Acute  stress  (controlled  se8ng)  

Goals  

1.  Determining  if  a  change  in  heart  rate,  breathing  rate  or  heart  rate  variability,  measured  with  Zephyr  Bioharness,  can  be  an  indicaCon  of  acute  stress.    

2.  Determining  if  a  combinaCon  in  these  variables  is  associated  with  acute  stress.          

   

Rest: 5 min DT test: 6 min Rest: 5 min

Methods  

•  ParCcipants:  –  10  professional  fire  fighters      –  Mean  age  39  years  (SD  7,3)    

     

   

VAS   VAS  VAS  

0  =  No  stress   10  =  Maximal  stress  

In  mm  

Results  

-­‐20

0

20

40

60

80

100

120

heart  rate breating  rate HRV VAS

rust  1

oefening

test

rust  2*

* *

Conclusion  &  discussion  

•  Increase  in  breathing  frequency  and  decrease  in  HRV  can  be  indicators  of  acute  stress  

•  CombinaCon  of  both  seem  to  be  associated  with  stress  

 •  However,    

–  Is  there  (enough)  stress  evoked?  –  No  correlaCon  between  VAS  and  physiogical  

parameters.      

     

   

(Physical)  stress  during  24  hours  shi=s  

Goal  

To  determine  the  (physical)  stress    during  24  hours  shi=s  in    professional  fire  fighters  using    Zephyr  Bioharness.    

     

   

Methods  

•  18  professional  fire  fighters      

     

   

Number   Mean  (Min-­‐max)  Gender  (male/female)   16/2  

Age  (years)   38,8  (25  –  49)  

BMI  (kg/m2)   25,8  (21  -­‐  30,6)  

Experience  (years)   12  (5  –  24)  

Smoking  (yes/no)   7/11  

Sport  parCcipaCon  (yes/no)   10/8  

Methods  

•  During  four  24  hour  shi=s  (19,  26  april,  1  and  7  may  2013)  –  Wearing  Zephyr  Bioharness  during  all  acCviCes  

(except  showering)  –  Subjects  were  instructed  to  do  what  they  normally  

would  do  

     

   

020406080100120140160180200

13:04

13:0613:08

13:1013:12

13:1413:16

13:1813:20

13:2213:24

13:2613:28

13:30

13:3213:34

13:36

Time

Heartrate/minResults  

     

   

Before  alarm

Alarm  –    Pullout

Pullout    –  on  the  spot

On  the  spot  –  retreat Retreat  –  back

0

5

10

15

20

25

30

35

13:04

13:06

13:08

13:10

13:1213:14

13:16

13:18

13:20

13:2213:24

13:26

13:28

13:30

13:32

13:3413:36

Time

brea

thin

g ra

te/m

inResults  

     

   

Before  alarm

Alarm  –    Pullout

Pullout    –  on  the  spot

On  the  spot  –  retreat Retreat  –  back

020406080100120140160180200

13:0413:0613:0813:1013:1213:1413:1613:1813:2013:2213:2413:2613:2813:3013:3213:3413:36

Time

HR

V (m

s)Results  

     

   

Before  alarm

Alarm  –    Pullout

Pullout    –  on  the  spot On  the  spot  –  retreat Retreat  –  back

-­‐20

0

20

40

60

80

100

120

140

160

180

pp1 pp2 pp3 pp4

HRV    (m

s)

before  alarm

alarm  -­‐  pullout

pullout  -­‐  on  the  spot

on  the  spot  -­‐  retreat

retreat  -­‐  back

Results  

     

   0

5

10

15

20

25

30

35

pp1 pp2 pp3 pp4

Bre

athi

ng ra

te/m

in

0

50

100

150

200

pp1 pp2 pp3 pp4

Hea

rt ra

te/m

in

Conclusion  &  discussion  

•  InformaCon  about  physical  stress  during  acCons  –  Difference  between  persons  –  DuraCon  of  high  intensity  exercise  

•  Stress  hard  to  measure  in  pracCce  •  InformaCon  about  the  physical  stress  can,  

ulCmately,  be  used  to  train  as  specific  as  possible  

   

General  conclusion  and  discussion  

•  In  a  controlled  environment  a  combinaCon  of  a  increase  in  breathing  rate  and  a  decrease  in  HRV  might  be  associated  with  stress  –  However,  stress  in  pracCce  

•  The  Zephyr  Bioharness  can  be  used  during  24  hour  shi=s  to  get  more  insight  in  the  physical  stress  during  these  shi=s  and  especially  the  acCons  

   

Billy  –  Gene  Holder,  77  year  old  fire  fighter  worked  for  56  years  for  the  fire  department  in  Irving    

QuesCons?