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Table 1 Baseline demographic data and physical fitness values in the TCE and CON groups

From: Impacts of tai chi exercise on functional fitness in community-dwelling older adults with mild degenerative knee osteoarthritis: a randomized controlled clinical trial

Variable

CON group (N = 32)

TCE group (N = 36)

95 % Confidence interval

t

p

Cohen’ d

Lower

Upper

Age (years)

75.4 ± 6.4

77.4 ± 5.9

-

-

1.355

0.180

0.325

Sex (Female/Male)

30/2

32/4

-

-

-

0.481

-

Body-mass index (kg/m2)

24.0 ± 2.7

24.7 ± 2.6

-0.589

2.015

1.093

0.278

0.264

30-s arm curl test (no. of times)

23.3 ± 6.5

21.4 ± 5.8

-4.994

1.029

-1.315

0.193

0.308

30-s chair stand (no. of times)

17.3 ± 3.5

16.2 ± 3.7

-2.789

0.734

-1.165

0.248

0.305

2-min step test (no. of times)

170.6 ± 35.6

146.2 ± 37.4

-42.130

-6.675

-2.748

0.008

0.668

Chair sit-and-reach test (cm)

-4.4 ± 8.8

-9.1 ± 9.4

-9.076

-0.240

-2.105

0.039

0.516

Back-scratch flexibility test (cm)

-7.4 ± 6.1

-9.9 ± 12.1

-7.135

2.002

-1.088

0.281

0.261

Single-leg stand with eyes opened (s)

13.8 ± 12.9

12.8 ± 12.3

-7.156

5.039

-0.347

0.730

0.080

Single-leg stand with eyes closed (s)

5.3 ± 2.2

3.2 ± 1.6

-3.021

-1.159

-4.482

3.02*10− 5

1.092

Functional-reach test (cm)

20.5 ± 6.9

16.0 ± 4.6

-7.426

-1.664

-3.235

0.002

0.767

8-foot up-and-go test (s)

8.4 ± 3.2

10.0 ± 3.4

0.009

3.188

2.007

0.049

0.485

10-m walk test (s)

8.0 ± 1.8

8.3 ± 2.5

-0.788

1.331

0.512

0.611

0.138

  1. Data are presented as the mean ± standard deviation
  2. bold p value represents reaching the significant level (p < 0.05)