Table 2.

Comparison of grip strength between absence and presence of the palmaris longus muscle in the right and left hands

	Years	PLM	Number of boys	Grip strength (kg)	p value	Number of girls	Grip strength (kg)	p value
				Mean ± SD			Mean ± SD
Right	6–7	Present	40	11.36 ± 1.98	0.097	39	10.35 ± 2.12	0.365
		Absent	14	11.03 ± 1.84		26	9.84 ± 2.35
	8–9	Present	86	14.31 ± 2.78	0.168	68	12.13 ± 2.48	0.066
		Absent	35	13.51 ± 3.10		36	13.52 ± 4.06
	10–11	Present	100	17.56 ± 3.31	0.802	74	16.14 ± 3.93	0.763
		Absent	30	17.73 ± 3.31		37	15.91 ± 3.42
Left	6–7	Present	40	10.73 ± 1.92	0.240	37	9.55 ± 2.24	0.837
		Absent	14	9.96 ± 2.54		28	9.42 ± 2.63
	8–9	Present	86	13.56 ± 3.06	0.344	66	13.28 ± 16.05	0.824
		Absent	35	12.98 ± 3.04		38	12.69 ± 3.85
	10–11	Present	95	17.16 ± 3.19	0.828	72	15.15 ± 3.69	0.555
		Absent	35	17.02 ± 3.39		39	14.74 ± 3.02

PLM palmaris longus muscle, SD standard deviation