Table 2 Pearson’s correlation coefficients for amount of exercise and physical fitness metrics

Hand grip strength (kg)

2127

0.095^b

0.000

Single-leg standing (s)

2082

−0.041

0.060

Chair sit-and-reach (cm)

2100

0.005

0.831

8-ft up-and-go (s)

2129

−0.095^a

0.000

30-second chair stand (number of repeats)

2115

0.088^a

0.000

2-minute step (number of steps)

2068

0.032

0.147

30-second arm curl (number of repeats)

2118

0.112^a

0.000

6-m walk test (s)

2127

−0.082^a

0.000

Back scratch (cm)

2068

0.034

0.122

Calf circumference (cm)

1020

0.038

0.220

Bone mass density (T-score)

1020

0.085^a

0.006