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Table 3 Participants' functional performance at baseline.

From: The feasibility of whole body vibration in institutionalised elderly persons and its influence on muscle performance, balance and mobility: a randomised controlled trial [ISRCTN62535013]

Parameter WBV+ Control N = 11 pa pb
  Initial Randomisation (N = 13) Reassessed at 6 weeks (N = 10)    
Chair sit-and-reach (cm) -20.2 ± 6.2 -21.0 ± 6.9 -23.2 ± 9.4 .061 .145
Back scratch (cm) -23.2 ± 16.0 -23.0 ± 18.3 -15.9 ± 6.9 .323 .667
30-second chair stand (number) 6.3 ± 4.0 7.0 ± 4.1 8.2 ± 3.1 .127 .303
Tinetti test      
   Body balance (score/16) 12.8 ± 3.7 13.4 ± 3.1 13.2 ± 2.6 .784 .566
   Gait (score/12) 9.6 ± 2.7 9.9 ± 2.8 9.9 ± 2.1 .891 .822
   Total (score/28) 22.4 ± 5.9 23.3 ± 5.6 23.1 ± 4.3 .966 .665
Timed get-up-and-go test (seconds) 17.9 ± 9.3 15.3 ± 5.5 14.8 ± 6.3 .399 .743
Grip strength (KPa) 41.6 ± 19.5 43.3 ± 18.9 43.3 ± 24.6 .765 .545
Leg extension 40 cm/sec      
   Work (J) 66.9 ± 74.6 55.8 ± 44.6 88.5 ± 79.4 .361 .387
   Maximal force (N) 270.0 ± 203.8 251.3 ± 141.4 375.2 ± 253.8 .277 .282
   Maximal power (W) 108.0 ± 81.5 100.5 ± 56.5 150.1 ± 101.5 .277 .282
   Maximal explosivity (N/sec) 2693.1 ± 1698.3 2755.0 ± 1600.1 4070.0 ± 2483.0 .134 .173
Leg extension 60 cm/sec      
   Work (J) 47.1 ± 57.1 36.9 ± 32.9 68.7 ± 78.6 .459 .468
   Maximal force (N) 204.3 ± 197. 0 178.3 ± 148.1 312.1 ± 281.3 .283 .290
   Maximal power (W) 123.4 ± 117.4 108.0 ± 87.7 187.3 ± 168.7 .339 .359
   Maximal explosivity (N/sec) 3885.0 ± 3291.6 3553.5 ± 2700.0 4872.3 ± 3371.6 .424 .426
  1. Mann-Whitney U Test (exact 2-tailed significance) Control versus WBV+ ainitial randomisation breassessed at 6 weeks. Values represent mean ± SD.