Preoperative handgrip strength and physical activity level in association with length of stay after coronary artery bypass grafting

Table 1 Baseline characteristics of patients undergoing coronary artery bypass grafting (n = 27), n (%)

Variable	Value
Age (years)
mean ± SD	60.56 ± 8.57
Sex
Male	22 (81.5)
Female	5 (18.5)
Body weight (kg)
mean ± SD	65.88 ± 11.35
Median (range)	69 (40-86.7)
Body mass index
Underweight (< 18.5 kg/m2)	1 (3.7)
Normal (18.5-24.9 kg/m2)	12 (44.4)
Overweight (25.0-29.9 kg/m2)	13 (48.1)
Obese (≥ 30 kg/m2)	1 (3.7)
Smoking history
Yes	20 (74.1)
No	7 (25.9)
Dyslipidemia
Yes	10 (37.0)
No	17 (63.0)
Hypertension
Yes	15 (55.6)
No	12 (44.4)
Diabetes mellitus
Yes	5 (18.5)
No	22 (81.5)
Handgrip strength - left (kg)
Median (range)	12 (6-30)
Handgrip strength - right (kg)
Median (range)	15 (8-35)
Total handgrip strength (kg)
Median (range)	26 (14-65)
Physical activity level (GPAQ)
Low	18 (66.7)
Moderate	9 (33.3)
High	0 (0)
Length of hospital stay (days)
Median (range)	9 (4-27)

Handgrip strength was assessed using the Jamar dynamometer, and physical activity level was evaluated using the Global Physical Activity Questionnaire. GPAQ: Global Physical Activity Questionnaire.

Table 2 Correlation between handgrip strength and length of stay

Variable	Ρco-efficient value (Spearman)	P value
Right HGS	0.12	0.537
Left HGS	0.14	0.536
Total HGS	0.15	0.436

HGS: Handgrip strength.

Table 3 Association between physical activity level and length of stay

Physical activity level	n	Length of stay (median, range in days)
Low	18	9 (4-27)
Moderate	9	8 (5-14)
Mann-Whitney U test	-	P = 0.174

Values are presented as median (range). The association between physical activity level and length of hospital stay was analyzed using the Mann-Whitney U test.