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Table 1 Median and interquartile range of the screening tests in the investigated sample

From: Cortical hemodynamics as a function of handgrip strength and cognitive performance: a cross-sectional fNIRS study in younger adults

Parameters

Median ± interquartile range

BDI-II (total score)

3.0 ± 6.0

Level of education (years)

15.6 ± 2.4

PSQI (total score)

4.0 ± 2.0

BSA (min per week)

PA: 236.5 ± 255.0/PE:292.5 ± 350.5

TMT A (s)

19.4 ± 6.3

TMT B (s)

42.9 ± 14.4

TMT B-A (s)

22.9 ± 11.4

EHI (total score)

83.3 ± 17.3

Mean heart rate during ST (bpm)

71.8 ± 20.2

LF/HF ratio

1.43 ± 1.51

Left/Right AHS (kg)

38.9 ± 26.2/44.1 ± 22.7

Left/Right NHS (A.U.)

1.67 ± 0.87/1.87 ± 0.78

Reaction time in ST (s)

0.94 ± 0.37

Correct answers in ST (%)

87.5 ± 12.5

  1. AHS absolute handgrip strength, A.U. arbitrary unit, BDI-II Becks Depression Inventory II (a score of 13 and higher indicates depression [102, 103]), bpm beats per minute, BSA physical activity questionnaire, derived from German ‘Bewegungs- und Sportaktivitätsfragebogen’ (The World Health Organization recommends, at least, 150 min of moderate-intensity physical activity in a week for substantial health benefits [104]), EHI Edinburgh Handedness Inventory (a score of 50 and higher indicates right-handedness [40]), LF/HF ratio low-frequency/high-frequency ratio, kg kilogram, min minutes, NHS normalized handgrip strength (normalized to body-mass-index), PA physical activity, PE physical exercise, s seconds, PSQI Pittsburgh Sleep Quality Index (a score of 6 and higher indicates insomnia [105]), ST Sternberg task, TMT Trail Making Test