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Table 1 Sociodemographic characteristics, lifestyle and physical activity between exercise and non-exercise group

From: The relationship between the severity of perimenstrual symptoms and a regular exercise habit in Japanese young women: a cross-sectional online survey

Characteristics of participants

Exercise group

Non-exercise group

χ2

p Value

Effect size

(n = 157)

(n = 120)

Age (years)

21.6 ± 1.9

21.9 ± 1.6

 

0.174

0.081

Age at menarche (years)

12.5 ± 1.7

12.4 ± 1.5

 

0.286

0.029

BMI (kg/m2)

20.7 ± 2.1

20.1 ± 2.0

 

0.067

0.109

Smoking

     

Absence

147 (93.6)

120 (96.0)

0.776

0.378

0.052

Presence

10 (6.4)

5 (4.0)

   

Alcohol intake

     

Low

146 (93.0)

121 (96.8)

2.002

0.157

0.084

High

11 (7.0)

4 (3.2)

   

Sleep

     

≧ 7 h

75 (47.8)

59 (47.2)

0.009

1.000

0.006

< 7 h

82 (52.2)

66 (52.8)

   

Breakfast

     

Eating

116 (73.9)

87 (69.6)

0.634

0.426

0.047

Not eating

41 (26.1)

38 (30.4)

   

Eating between meals

     

Eating

115 (73.2)

79 (63.2)

3.273

0.070

0.108

Not eating

42 (26.8)

46 (36.8)

   

Painkillers

     

Using

75 (47.8)

58 (46.4)

0.052

0.819

0.014

Not using

82 (52.2)

67 (53.6)

   

IPAQ-SF

     

Low

13 (28.3)

80 (64.0)

114.233

0.001*

0.636

Moderate

92 (58.6)

45 (36.0)

   

High

52 (33.1)

120 (0.0)

   
  1. Data are expressed as means ± SD, or n (%)
  2. BMI body mass index, IPAQ-SF International Physical Activity Questionnaire Short Form
  3. *Statistical significant