Table 3 Subgroup-specific peak accelerations (given as mean ± standard deviation)
From: ‘Falling heads’: investigating reflexive responses to head–neck perturbations
Age groups | Sex | ||||
|---|---|---|---|---|---|
22–24 years | 36–51 years | 63–71 years | Male | Female | |
Peak lin. acc., supine | − 0.75 ± 0.1 g | 0.79 ± 0.1 g | − 0.66 ± 0.2 g | − 0.71 ± 0.2 g | − 0.77 ± 0.1 g |
Time to peak lin. acc., supine | 45.8 ± 2.5 ms | 43.6 ± 2.9 ms | 41.4 ± 2.7 ms | 42.2 ± 2.9 ms | 45.2 ± 2.7 ms |
Peak rot. acc., supine | 67.7 ± 6.0 rad/s2 | 64.3 ± 5.6 rad/s2 | 50.3 ± 13.8 rad/s2 | 57.2 ± 13.5 rad/s2 | 66.0 ± 6.2 rad/s2 |
Time to peak rot. acc., supine | 52.7 ± 7.6 ms | 53.7 ± 13.7 ms | 48.8 ± 4.4 ms | 49.3 ± 5.9 ms | 54.1 ± 11.2 ms |
Peak lin. acc., prone | − 0.43 ± 0.3 g | − 0.51 ± 0.2 g | − 0.62 ± 0.2 g | − 0.65 ± 0.2 g | − 0.40 ± 0.2 g |
Time to peak lin. acc., prone | 36.7 ± 1.9 ms | 35.6 ± 2.1 ms | 37.0 ± 2.2 ms | 36.4 ± 2.6 ms | 36.4 ± 1.7 ms |
Peak rot. acc., prone | 38.7 ± 20.2 rad/s2 | 43.5 ± 13.7 rad/s2 | 53.0 ± 17.4 rad/s2 | 54.7 ± 14.5 rad/s2 | 36.1 ± 15.3 rad/s2 |
Time to peak rot. acc., prone | 54.0 ± 10.3 ms | 63.8 ± 6.1 ms | 55.6 ± 12.7 ms | 58.5 ± 9.9 ms | 57.4 ± 10.8 ms |