Table 6.

Percentile ranking of male police officer sit up ability (repetitions)

Age group (n)	20–29 (n = 83)	30–39 (n = 196)	40–49 (n = 247)	50–59 (n = 53)
Mean (SD)	41.17 (8.22)	36.63 (9.67)	31.73 (9.94)	29.66 (9.76)
Percentile
95	54.65	52.49	48.03	45.67
90	51.69	49.01	44.45	42.15
85	49.72	46.69	42.07	39.81
80	48.07	44.75	40.08	37.86
75	46.68	43.11	38.39	36.20
70	45.44	41.66	36.90	34.74
65	44.38	40.40	35.61	33.47
60	43.23	39.05	34.22	32.10
55	42.24	37.89	33.02	30.93
50	41.17	36.63	31.73	29.66
45	40.10	35.37	30.44	28.39
40	39.12	34.21	29.25	27.22
35	37.96	32.86	27.85	25.85
30	36.90	31.60	26.56	24.58
25	35.66	30.15	25.07	23.12
20	34.27	28.51	23.38	21.46
15	32.62	26.57	21.39	19.51
10	30.65	24.25	19.01	17.17
5	27.69	20.77	15.43	13.65