Table 4 Metrics of contractile impulse over time and between groups (mean ± SE).

From: Effects of once- versus twice-weekly eccentric resistance training on muscular function and structure in older adults: a randomised controlled trial

Measurement

Baseline

Mid-training

Post-training

Impulse0-100 (N·m·s)

CON

2.56 ± 0.34

2.42 ± 0.25

2.49 ± 0.28

G1X

2.49 ± 0.41

2.44 ± 0.33

2.34 ± 0.36

G2X

2.27 ± 0.42

2.60 ± 0.34

2.42 ± 0.37

Collapsed

2.45 ± 0.23

2.48 ± 0.19

2.42 ± 0.21

Impulse0-150 (N·m·s)

CON

5.33 ± 0.57

5.26 ± 0.47

5.51 ± 0.45

G1X

5.14 ± 0.65

5.27 ± 0.59

5.43 ± 0.61

G2X

4.70 ± 0.68

5.69 ± 0.61

5.67 ± 0.64

Collapsed

5.07 ± 0.38

5.40 ± 0.34

5.53 ± 0.35

Impulse0-200 (N·m·s)

CON

8.14 ± 0.79

8.06 ± 0.68

8.53 ± 0.63

G1X

7.34 ± 0.90

7.93 ± 0.85

8.65 ± 0.91

G2X

7.39 ± 0.94

8.64 ± 0.89

9.06 ± 0.95

Collapsed

7.64 ± 0.52

8.19 ± 0.49

8.73 ± 0.53**

Impulse0-250 (N·m·s)

CON

11.40 ± 1.16

11.51 ± 1.03

12.02 ± 0.88

G1X

9.65 ± 1.30

10.72 ± 1.26

12.31 ± 1.34

G2X

10.47 ± 1.35

12.43 ± 1.31

13.14 ± 1.40

Collapsed

10.53 ± 0.75

11.53 ± 0.73*

12.46 ± 0.77***

Impulse0-300 (N·m·s)

CON

14.62 ± 1.60

14.40 ± 1.70

14.86 ± 1.39

G1X

12.04 ± 1.69

13.49 ± 1.62

15.97 ± 1.77

G2X

13.54 ± 1.77

16.20 ± 1.69

17.05 ± 1.85

Collapsed

13.43 ± 0.98

14.65 ± 0.95*

15.90 ± 1.02**

  1. “Collapsed” represents the group data collapsed at each time point; ** denotes a significant difference to baseline P < 0.01, and *** denotes a significant difference to baseline P < 0.001. CON = control group, G1X = once-weekly training group, and G2X = twice-weekly training group.
Back to article page