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Table 4 Summary of studies that focused on age, ankle dorsiflexion, and balance as risk factors for MskI

From: Risk factors for musculoskeletal injuries in the military: a qualitative systematic review of the literature from the past two decades and a new prioritizing injury model

Study

Publication year

Country

Branches

Unit/training

Study type

n

Risk factor*

Age

       

 Anderson [70]

2015

USA

Army

Light Infantry Brigade

R

2101

Yes

 Anderson [71]

2017

USA

Army

Light Infantry

R

4384 M, 363 F

Yes

 Beck [140]

2000

USA

Marines

 

P

624 M, 693 F

No

 Bedno [72]

2013

USA

Army

IET

P

8456 M

Yes (M)

 Cameron [44]

2010

USA

Multiple

Active duty

R

423,581

Yes

 Canham-Chervak [141]

2000

USA

Army

Recruits BCT

P

655 M, 498 F

No

 Canham-Chervak [52]

2006

USA

Army

Recruits

P

1156 M, 746 F

No

 Cosio-Lima [54]

2013

USA

Army

Sergeants Major Academy

R

149

No

 Cowan [74]

2012

USA

Army

Trainees

P

1568 F

No (F)

 Cowan [75]

2011

USA

Army

Recruits

P

7323

Yes

 Craig [40]

2000

USA

Army

Airborne Division

R

242,949 aircraft exists

Yes (30 years +)

 Davey [76]

2015

UK

Marines

 

P

1090 M

No (M)

 Dixon [142]

2019

UK

Marines

Recruits

P

1065

Yes (younger)

 Grier [78]

2017

USA

Army

Infantry Brigade

R

4236 M

Yes (M)

 Grier [79]

2010

USA

Multiple

 

R

24,177 M

Yes (M)

 Havenetidis [143]

2011

Greece

n/a

Recruits

P

253

Yes

 Henderson [144]

2000

USA

Army

Combat medic

P

439 M, 287 F

Yes

 Hill [115]

2013

USA

Army

Active duty

R

83,323

Yes

 Knapik [47]

2012

USA

Army

Recruits BCT

R

475,745 M, 107,906 F

Yes

 Knapik [145]

2006

USA

Army

Recruits BCT

P

1174 M, 898 F

Yes

 Knapik [82]

2013

USA

Army

Army military police training

P

1838 M, 553 F

Yes

 Knapik [146]

2007

USA

Army

Mechanics

R

518 M, 43 F

No

 Knapik [84]

2007

USA

Army

Band

R

159 M, 46 F

No

 Knapik [85]

2001

USA

Army

Recruits

P

182 M, 168 F

No

 Knapik [86]

2008

USA

Army

Paratrooper training

R

1677

Yes

 Knapik [87]

2008

USA

Army

Recruits BCT

P

2147 M, 920 F

Yes

 Knapik [88]

2009

USA

Marines

Recruits BCT

P

840 M, 571 F

No

 Korvala [89]

2010

Finland

n/a

Conscripts

P

192

Yes

 Kuikka [36]

2013

Finland

Army

Conscripts

R

128,584

Yes

 Lappe [55]

2005

USA

Army

Recruits BCT

R

4139 F

Yes (F)

 Lappe [56]

2001

USA

Army

Recruits BCT

P

3758 F

Yes (F)

 Lauder [90]

2000

USA

Army

Active duty

P

230 F

No (F)

 Ma [147]

2016

China

n/a

 

R

2479

No

 Mahieu [148]

2006

Belgium

n/a

Recruits Royal Military Academy

P

69 M

No (M)

 Mattila [38]

2007

Finland

Army

Conscripts

P

149,750 M, 2345 F

Yes

 Moran [149]

2013

Israel

Army

Recruits

P

44

No

 Munnoch [91]

2007

UK

Marines

 

P

1115 M

Yes (M)

 Nunns [150]

2016

UK

Marines

Recruits

P

160 M

No (M)

 Nye [151]

2016

USA

Air Force

Recruits BCT

R

67,525

Yes

 Owens [152]

2007

USA

n/a

Active duty

R

4451

Yes

 Owens [128]

2009

USA

Army, Marines, Navy, Air Force

Active duty

R

19,730

Yes

 Parr [153]

2015

USA

Army

Special Operations Forces

P

106

No

 Pihlajamäki [93]

2019

Finland

n/a

Full duty

R

4029 M

No (M)

 Rabin [154]

2014

Israel

Army

Recruits

P

70 M

No (M)

 Reynolds [96]

2009

USA

Army

Infantry

P

181

No

 Reynolds [97]

2002

USA

Army

Construction engineers & Combat artillery soldiers

P

313

No

 Roos [99]

2015

Switzerland

Army

Recruits

P

651 M

No (M)

 Roy [133]

2012

USA

Army

Brigade Combat Team#

P

246 M, 17 F

No

 Roy [121]

2014

USA

Army

Active duty

R

625 F

Yes (F)

 Ruohola [100]

2006

Finland

n/a

Recruits

P

756 M

No (M)

 Sanchez-Santos [65]

2017

UK

Marines

Recruits

P

1082 M

Yes (M)

 Schneider [58]

2000

USA

Army

Airborne Div

R

1214

Yes

 Sefton [137]

2016

USA

Army

Recruits IET

P

1788 M

Yes (M)

 Shaffer [109]

2006

USA

Marines

Recruits BCT

R

2962 F

No (F)

 Sharma [102]

2019

UK

Army

Infantry recruits

P

562 M

No (M)

 Sharma [103]

2011

UK

Army

Infantry recruits

P

468 M

No (M)

 Skeehan [139]

2009

USA

Army, Marine, Navy

Active duty#

R

3367

No

 Sobhani [155]

2015

Iran

n/a

Recruits

R

181 M

No (M)

 Sormaala [39]

2006

Finland

n/a

Recruits

R

118,149

No

 Taanila [59]

2012

Finland

Army

Conscripts

P

982 M

Yes (M)

 Trybulec [156]

2016

Poland

Army

Airborne Brigade

R

162 M, 3 F

Yes

 Wang [106]

2003

China

n/a

Military Police Forces Training

R

805 M

No (M)

 Waterman [31]

2016

USA

Multiple

Active Duty

R

5,580,875

Yes

 Wilkinson [60]

2009

UK

Army

Infantry

P

660

Yes

 Zhao [108]

2016

China

Army

Recruits

P

1398 M

No (M)

Ankle dorsiflexion (limited)

       

 Dixon [30]

2006

UK

Marines

Recruits

R

20

No

 Rabin [154]

2014

Israel

Army

Recruits

P

70 M

No (M)

Balance (low)

       

 Heebner [157]

2017

USA

Army

Special Operation Forces

P

95

No

 Sell [158]

2014

USA

Special Operation Forces

 

P

226

Yes

  1. BCT basis combat training; IET initial entry training; n/a not available; R retrospective study; P prospective study; M male; F female; (M) risk factor only for males; (F) risk factor only for females
  2. *Risk factor for musculoskeletal injuries (MSkI); #Deployment