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Table 2 Results at baseline and four months for intervention and control groups (n = 204)

From: Effectiveness of a progressive resistance exercise program for industrial workers during breaks on perceived fatigue control: a cluster randomized controlled trial

Primary Outcome Measure

Groups Unadjusted, Mean (SD)

Unadjusted Within-Group,

Mean Difference (95% CI)

[Baseline minus four months]

Between-Group Adjusted, Mean Difference (95% CI)

Intervention

(n = 98)

Control

(n = 106)

Intervention

(n = 98)

Control

(n = 106)

 

Need for Recovery

0–100

Baseline

68.4 (12.1)

56.2 (10.9)

   

Four months

59.4 (8.7)

51.7 (8.6)

9.93 a

(7.3 to 12.5)

6.77 a

(5.78 to 7.75)

7.7

(−6.2 to 12.4)

Muscle Strength

1-RM (kg)

 Biceps

Baseline

16.6 (2.3)

16.5 (2.5)

   

Four months

17.8 (2.5)

17.8 (2.5)

- 1.2 a

(− 1.4 to − 1.0)

- 1.3 a

(− 1.4 to − 1.0)

0.0

(0.0)

 Triceps

Baseline

11.1 (1.9)

11.2 (2)

   

Four months

12.4 (2.2)

12.3 (2)

- 1.3 a

(−1.4 to − 1.0)

- 1.1 a

(− 1.4 to − 1.0)

0.0

(− 0.5 to 0.5)

 Deltoid

Baseline

8.8 (1.6)

8.9 (1.4)

   

Four months

10 (1.9)

10.1 (2)

- 1.2 a

(−1.3 to − 1.0)

- 1.2 a

(− 1.3 to − 1.0)

0.1

(− 0.5 to 0.3)

 Quadriceps femoris and Hamstrings

Baseline

27.4 (2.4)

27.7 (2.3)

   

Four months

29.7 (3.4)

30.3 (3.3)

- 2.4 a

(− 2.7 to − 2.0)

- 2.6 a

(− 2.9 to − 2.3)

0.4

(− 1.1 to 0.2)

 Triceps surae

Baseline

27 (2.4)

27.4 (2.5)

   

Four months

29.1 (3.0)

29..3 (3.0)

- 2.1 a

(−2.2 to −1.7)

- 1.9 a

(− 2.2 to − 1.7)

0.2

(− 1.0 to 0.3)

  1. aSignificant difference between groups (p < 0.05); SD - standard deviation; 1 RM - one repetition maximum. There were no missing data