Table 2.
Means and standard errors and effect sizes for the pre- and post-tests for each pain test and condition
Condition | Control
|
Isometric*
|
Moderate AE
|
Vigorous AE
|
||||
---|---|---|---|---|---|---|---|---|
Age group | Young | Older | Young | Older | Young | Older | Young | Older |
PPT (kg) | ||||||||
Pre | 2.91±0.23 | 3.62±0.29 | 2.77±0.27 | 3.90±0.32 | 2.97±0.22 | 3.39±0.27 | 2.72±0.21 | 3.45±0.26 |
Post | 2.90±0.22 | 3.80±0.27 | 3.00±0.26 | 3.99±0.30 | 3.11±0.22 | 3.51±0.28 | 3.10±0.23 | 3.55±0.29 |
ES | −0.01 | 0.21 | 0.27 | 0.09 | 0.18 | 0.14 | 0.49 | 0.12 |
PPS (0–100 NRS) | ||||||||
Pre | 57.15±6.1 | 44.48±7.3 | 59.79±5.5 | 45.65±6.6 | 54.51±5.2 | 44.49±6.6 | 56.35±5.2 | 50.84±6.7 |
Post | 60.59±6.2 | 42.58±7.5 | 57.23±5.6 | 45.29±6.7 | 51.53±5.5 | 50.63±7.1 | 55.35±5.8 | 48.03±7.5 |
ES | −0.23 | 0.08 | 0.14 | 0.01 | 0.16 | −0.28 | 0.06 | 0.13 |
TS max | ||||||||
Pre | 7.82±2.0 | 10.20±2.4 | 13.70±2.6 | 9.09±3.0 | 11.47±2.4 | 8.07±3.2 | 11.95±2.5 | 9.78±3.4 |
Post | 9.29±2.1 | 9.04±2.4 | 10.18±2.4 | 10.70±2.7 | 8.99±1.9 | 6.72±2.6 | 12.79±2.3 | 7.00±3.1 |
ES | −0.23 | 0.15 | 0.45 | −0.18 | 0.37 | 0.14 | −0.11 | 0.27 |
AUC heat pain | ||||||||
Pre | 215.87±16.4 | 201.97±20.3 | 213.36±19.0 | 203.78±20.9 | 235.39±17.0 | 180.88±21.1 | 242.07±19.5 | 179.63±24.2 |
Post | 204.44±19.6 | 143.88±23.6 | 190.62±18.6 | 166.06±20.5 | 211.76±17.6 | 152.19±21.7 | 202.73±18.1 | 155.93±22.4 |
ES | 0.20 | 0.83 | 0.38 | 0.58 | 0.44 | 0.42 | 0.66 | 0.34 |
Note. AE=aerobic exercise. PPT=pressure pain threshold. PPS=pressure pain suprathreshold test. TS=temporal summation. AUC=area under the curve. Effect sizes (ES) represent the magnitude of change from pretest to posttest. A positive ES indicates pain was reduced following exercise or quiet rest.
AUC values by sex for Isometric condition: Young Male pre=183.10±22.7 post=183.12±25.4; Young female pre=205.16±24.3 post=165.87±23.8; Older male pre=148.86±31.6 post=136.93±31.0; Older female pre=258.69±37.9 post=195.19±37.8.