Table 5

Segment joint angles at peak compression (degrees, mean ± SE)

Forearm segment angles

Hands-Only CPR

30:2 CPR

Younger

Older

All

Younger

Older

All

Early

108.8 ± 0.7

112.6 ± 0.8

110.7 ± 0.6

109.2 ± 0.7

110.0 ± 0.8

109.8 ± 0.5

End

105.8 ± 0.7

110.5 ± 0.8

108.1 ± 0.6

107.1 ± 1.0

109.0 ± 0.8

108.1 ± 0.6

Across time

107.3 ± 2.2

111.5 ± 1.5

108.2 ± 0.2

109.5 ± 0.7

Upper arm segment angles

Hands-Only CPR

30:2 CPR

Younger

Older

All

Younger

Older

All

Early

84.1 ± 1.6

83.1 ± 1.7

83.6 ± 1.2

83.2 ± 1.6

82.9 ± 1.6

83.1 ± 1.1

End

84.6 ± 1.6

83.9 ± 1.7

84.2 ± 1.2

80.6 ± 1.7

79.5 ± 1.6

80.0 ± 1.2

Across time

84.3 ± 1.3

83.5 ± 1.5

81.9 ± 1.4

81.1 ± 1.4

Trunk segment angles

Hands-Only CPR

30:2 CPR

Younger

Older

All

Younger

Older

All

Early

214.3 ± 2.1

215.1 ± 2.4

214.7 ± 1.6

213.5 ± 2.1

215.9 ± 2.2

214.7 ± 1.5

End

214.1 ± 2.1

220.9 ± 2.4

217.5 ± 1.6

214.1 ± 2.7

215.0 ± 2.2

214.5 ± 1.6

Across time

214.2 ± 1.8

218.0 ± 2.1

213.8 ± 2.1

215.5 ± 1.9

Trowbridge et al. BMC Nursing 2009 8:6   doi:10.1186/1472-6955-8-6