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Table 2 Comparison of exercise frequency, duration, and type before and during deployment

From: Self-reported dietary supplement use in deployed United States service members pre-deployment vs. during deployment, Afghanistan, 2013–2014

Exercise descriptions

Before deployment

During deployment

P

Exercise frequency

 Could not work out

27 (2%)

24 (1%)

0.6617

 Less than 2 times a week

218 (13%)

139 (8%)

< 0.0001

 2-6 times a week

996 (60%)

859 (53%)

< 0.0001

 Daily

358 (21%)

503 (31%)

< 0.0001

 More than once a day

67 (4%)

109 (7%)

< 0.0001

Exercise duration

 Less than 30 min

133 (8%)

85 (5%)

< 0.0001

 30-60 min

999 (61%)

833 (52%)

< 0.0001

 61-120 min

456 (28%)

615 (39%)

< 0.0001

 More than 120 min

39 (3%)

69 (4%)

< 0.0001

Exercise type

 Weightlifting

669 (40%)

1234 (73%)

< 0.0001

 Cardio

1353 (80%)

1300 (77%)

0.0009

 Circuit training

402 (24%)

426 (25%)

0.1456

 Walking

161 (10%)

185 (11%)

0.0153

 Calisthenics

132 (8%)

120 (7%)

0.2008

 Other

66 (4%)

42 (2%)

0.0013

  1. Percentages given are out of all study participants (n = 1685). Participants may report more than one type of exercise. All P-values are for McNemar’s chi-square test for paired proportions