Effects of backhand stroke styles on bone mineral content and density in postmenopausal recreational tennis players: a cross-sectional pilot investigation

Table 2 BA, BMC and BMD at lumbar and hip joint (means ± SD)

	OB	TB	SG	Effect size (f)
BA (cm²)
Lumbar (L2–L4)	45.22 ± 4.96	43.42 ± 3.04	42.40 ± 2.66	0.33
Femoral neck	4.85 ± 0.35	4.91 ± 0.38	4.81 ± 0.24	0.13
Inter-trochanter	18.66 ± 2.76	16.38 ± 2.90	17.13 ± 1.76	0.38
Great trochanter	10.48 ± 1.60	9.75 ± 1.53	9.40 ± 0.86	0.34
Ward’s triangle	1.17 ± 0.09	1.16 ± 0.09	1.19 ± 0.09	0.14
BMC (g)
Lumbar (L2–L4)	44.04 ± 9.69	43.78 ± 6.92*	38.95 ± 8.00	0.29
Femoral neck	3.74 ± 0.62	3.82 ± 0.73*	3.40 ± 0.66	0.27
Inter-trochanter	20.70 ± 4.68	18.00 ± 4.48	17.11 ± 2.58	0.39
Great trochanter	7.43 ± 1.90	6.87 ± 1.46	6.30 ± 1.01	0.32
Ward’s triangle	0.73 ± 0.18	0.75 ± 0.22	0.72 ± 0.25	0.06
BMD (g/cm²)
Lumbar (L2–L4)	0.967 ± 0.127	1.010 ± 0.139*	0.915 ± 0.163	0.27
Femoral neck	0.773 ± 0.137	0.786 ± 0.139*	0.706 ± 0.123	0.26
Inter-trochanter	1.109 ± 0.174*	1.096 ± 0.152*	0.999 ± 0.113	0.34
Great trochanter	0.705 ± 0.107	0.707 ± 0.111	0.671 ± 0.092	0.17
Ward’s triangle	0.618 ± 0.136	0.646 ± 0.191	0.595 ± 0.180	0.12

ISSN: 1472-6874