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Table 1 Initial thrust (impulse thrust 1) mean segmental (L1, L2) and intersegmental (L1–L2) acceleration responses (m/sec2). Standard deviations are shown in parentheses.

From: Increased multiaxial lumbar motion responses during multiple-impulse mechanical force manually assisted spinal manipulation

Impulse Setting Segment ML (S.D.) PA (S.D.) AX (S.D.)
Low L1 10.0 (4.0) 36.1 (12.0) 44.6 (11.0)
  L2 8.8 (4.5) 30.7 (10.7) 47.2 (14.8)
  L1–L2 10.1 (3.2) 24.5 (9.3) 39.7 (19.6)
Medium L1 14.3 (7.1) 71.4 (30.4) 86.7 (31.9)
  L2 14.2 (7.4) 66.2 (21.7) 92.8 (32.9)
  L1–L2 15.3 (6.6) 49.9 (19.5) 81.0 (35.9)
High L1 27.5 (14.3) 134.4 (46.3) 130.6 (62.8)
  L2 26.1 (14.2) 116.4 (36.1) 158.3 (41.2)
  L1–L2 29.1 (13.1) 107.0 (61.8) 136.8 (64.8)