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Table 3 Linear mixed modelling results showing the mean differences between pre- and post-training after adjusting for age, sex and previous training history

From: Effects of supervised high-intensity hardstyle kettlebell training on grip strength and health-related physical fitness in insufficiently active older adults: the BELL pragmatic controlled trial

Variable

MD

95% CI

8a

% Change

Grip strength (kg)

 Right

7.1

(4.9, 9.3)*

1.66

24.6

 left

6.3

(4.1, 8.4)*

1.48

22.4

Stair-climb time (s)

-2.7

(-5.2, -0.2)*

0.55

-5.6

Stair-climb est. VO2 (ml.kg−1.min−1)

2.3

(0.2, 4.4)*

0.55

6.2

5 × floor transfer (s)

-6.0

(-9.8, -2.2)*

0.80

-14.3

6-min walk distance (m)

41.7

(17.9, 65.5) *

0.85

7.0

30 s Sit to Stand (reps)

3.3

(0.9, 5.7)*

0.66

23.0

Predicted 1RM (kg)

16.2

(2.4, 30.0)*

0.57

23.3

Knee extension – peak force (N)

 Right

61.6

(4.4, 118.8)*

0.52

19.1

 Left

49.8

(-1.2, 100.7)

0.47

17.4

Hip extension – peak force (N)

 Right

10.8

(-3.0, 24.5)

0.38

6.7

 Left

21.0

(4.2, 37.8)*

0.60

12.7

SF36—health change

17.1

(4.4, 29.8)*

0.68

32.6

DXA – ASM (kg)

0.65

(0.08, 1.22)*

0.55

3.1

DXA – sarcopenia index (kg/m2)

0.23

(0.03, 0.42)*

0.57

3.1

  1. Only outcome measures with a significant pre- to post-training change are displayed
  2. a effect size: week 13 to week 29 (pre- to post-training); VO2, Oxygen uptake; 1RM, 1 Repetition Maximum; SF36, 36-Item Short Form Survey; DXA, Dual-energy X-ray absorptiometry; ASM, appendicular skeletal muscle mass. *p < 0.05