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. 2022 Jul 3;123:119–126. doi: 10.1016/j.ijid.2022.06.052

Table 2.

Functional fitness in HCWs with nonsevere and severe COVID-19.

Categories All (N = 446) Median (IQR) β (95% CI)
Nonsevere (N = 162) Severe (N = 189) Nonsevere (N = 114) Severe (N = 189) P
Muscle strength test
 Grip strength test, N 25.5 (21.2, 30.5) 25.9 (21.4, 29.9) 25.3 (21.3, 30.7) 0 0.21 (-0.98, 1.41) 0.726
 30-second elbow flexion test, n 19.0 (15.0, 20.5) 18.0 (15.0, 24.0) 19.0 (15.0, 23.0) 0 0.21 (-0.83, 1.24) 0.693
30-second chair stand, n 17.0 (15.0, 20.5) 18.0 (15.0, 21.0) 17.0 (15.0, 20.0) 0 -0.50 (-1.50, 0.50) 0.328
 2-minute step test, n 93.0 (80.0, 107.0) 95.0 (83.0, 108.0) 92.0 (79.0, 107.0) 0 -1.62 (-5.60, 2.36) 0.423
Flexibility test
 Back scratch test (left) -1.0 (-8.0, 3.0) 0.0 (-5.9, 3.4) -2.8 (-10.1, 2.6) 0 -0.76 (-2.51, 0.99) 0.392
 Back scratch test (right) 2.0 (-2.1, 5.0) 2.5 (0.0, 5.2) 1.7 (-4.3, 4.4) 0 -1.01 (-2.39, 0.36) 0.147
 Chair sit-and-reach test, cm 1.5 (-2.0, 6.5) 2.3 (0.0, 7.0) 1.0 (-3.5, 6.5) 0 0.05 (-2.38, 2.48) 0.969
Agility/dynamic balance
 Functional reach test, cm 27.0 (22.2, 31.0) 27.0 (22.0, 30.0) 27.0 (23.0, 31.0) 0 0.51 (-0.97, 1.99) 0.500
YBT
 Anterior-La 73.1 (69.0, 80.0) 73.0 (69.4, 79.0) 73.5 (68.0, 80.0) 0 0.56 (-1.13, 2.26) 0.512
 Posterolateral-L 76.0 (70.2, 81.0) 75.9 (71.0, 81.0) 77.0 (70.0, 81.0) 0 0.52 (-1.40, 2.45) 0.595
 Posteromedial-L 64.0 (54.9, 71.8) 64.0 (56.0, 71.0) 77.0 (70.0, 81.0) 0 1.01 (-1.67, 3.71) 0.460
 Anterior-Rb 75.0 (69.5, 80.0) 75.0 (70.5, 80.0) 75.0 (69.0, 80.0) 0 -0.27 (-1.85, 1.31) 0.731
 Posterolateral-R 78.0 (71.5, 83.0) 78.0 (73.0, 83.0) 78.0 (71.0, 84.0) 0 0.00 (-1.87, 1.87 0.999
 Posteromedial-R 62.0 (54.0, 70.0) 61.0 (54.0, 81.0) 63.0 (54.0, 71.0) 0 1.29 (-1.42, 3.99) 0.351
Leg length 79.0 (76.8, 81.5) 79.0 (76.8, 81.0) 79.0 (76.8, 81.6) 0 0.25 (-0.28, 0.77) 0.358
Composite score-L 211.8 (196.6, 227.0) 211.0 (197.9, 228.4) 212.0 (196.5, 227.9) 0 2.10 (-2.80, 7.00) 0.400
Composite score-R 214.0 (197.0, 229.6) 214.0 (197.9, 228.4) 214.0 (196.0, 230.0) 0 1.01 (-4.01, 6.03) 0.692
Ratio of composite score to leg length-L 0.9 (0.8, 0.9) 0.9 (0.8, 0.9) 0.9 (0.8, 0.9) 0 0.01 (-0.01, 0.02) 0.533
Ratio of composite score to leg length-R 0.9 (0.8, 1.0) 0.9 (0.8, 1.0) 0.9 (0.8, 1.0) 0 0.00 (-0.02, 0.02) 0.931

Abbreviations: HCWs, healthcare workers; IQR, interquartile range

a

L-reach distance by left leg. bR-reach distance by right leg.

The models adjusted for age, sex, education, roles in work, body mass index (BMI), smoking habit, and comorbidities.