Table 2 Mean (± SD) heart rate [bpm] and respiratory rate [cpm] across experimental conditions and change from EC1 to AWT and EC2 to CPT, as well as RMSSD [ms] for cardiac and respiratory data.

From: On the cardiorespiratory coordination assessed by the photoplethysmography imaging technique

Variable

Group

EO1

EC1

AWT

EC2

CPT

EC3

EO2

AWT-EC1

CPT-EC2

HR

Experimental

66.6 (± 10.0)

67.1 (± 10.1)

66.0 (± 10.8)

65.9 (± 9.0)

70.8 (± 10.4)

64.8 (± 8.8)

63.4 (± 9.1)

− 1.1 (± 2.8)

4.9 (± 7.6)

Control

56.5 (± 8.3)

56.8 (± 8.4)

54.1 (± 9.1)

55.3 (± 8.2)

61.3 (± 13.1)

56.4 (± 7.3)

58.5 (± 10.2)

− 2.7 (± .7)

5.9 (± 5.2)

Resp

Experimental

13.6 (± 4.0)

12.9 (± 4.4)

13.6 (± 4.2)

14.7 (± 4.0)

15.1 (± 2.8)

14.2 (± 3.7)

15.0 (± 4.0)

.67 (± 1.7)

.40 (3.0)

Control

13.3 (± 3.9)

12.9 (± 3.8)

13.4 (± 3.8)

13.5 (± 3.9)

12.7 (± 5.8)

12.7 (± 5.0)

10.6 (± 4.0)

.54 (± 1.0)

− .75 (1.9)

RMSSD cardiac

Experimental

83.6 (± 45.7)

69.2 (± 27.8)

77.5 (± 29.6)

67.2 (± 22.2)

80.0 (± 28.7)

71.0 (± 21.4)

68.8 (± 28.8)

7.9 (± 19.2)

11.7 (± 17.3)

Control

88.8 (± 71.5)

76.1 (± 59.0)

83.6 (± 69.1)

81.5 (± 38.7)

90.9 (± 59.0)

73.2 (± 45.8)

74.1 (± 49.9)

7.5 (± 10.2)

9.4 (± 21.1)

RMSSD respiratory

Experimental

1.81 (± .60)

1.85 (± .60)

2.24 (± .90)

2.09 (± .60)

2.18 (± .90)

2.15 (± .50)

1.86 (± .60)

.34 (± .9)

.11 (± .7)

Control

1.53 (± .50)

1.35 (± .30)

1.96 (± .90)

1.98 (± .80)

2.37 (± .10)

2.15 (± .30)

1.70 (± .60)

.61 (± .7)

.40 (± .9)