sodium-ethylxanthate and Musculoskeletal-Diseases

In the final decade of the 20th century, the British Armed Forces came under intense pressure to open up traditionally male roles to female recruits. For training, women were initially given lower entry and exit standards, but it became apparent that many did not possess the strength necessary for their work. This 'gender fair' policy was therefore changed to a 'gender free' policy, whereby identical physical fitness tests were used for selection of male and female recruits and the training programme made no allowances for gender differences. To determine the effects of this policy change, data from medical discharges were examined for the periods before and after implementation, with reference to musculoskeletal injuries of the lower limbs. In the first cohort there were 5697 men and 791 women, in the second 6228 men and 592 women. The cross-gender (F/M) odds ratio for discharges because of overuse injury rose from 4.0 (95% CI 2.8 to 5.7) under the gender-fair system to 7.5 (5.8 to 9.7) under the gender-free system (P=0.001). Despite reducing the number of women selected, the gender-free policy led to higher losses from overuse injuries. This study confirms and quantifies the excess risk for women when they undertake the same arduous training as male recruits, and highlights the conflict between health and safety legislation and equal opportunities legislation.

Topics: Adolescent; Adult; Age Factors; Chi-Square Distribution; Female; Fractures, Stress; Health Status; Humans; Incidence; Male; Military Personnel; Muscle Fatigue; Musculoskeletal Diseases; Physical Education and Training; Physical Endurance; Pilot Projects; Sex

There is anecdotal and some scientific evidence that females in military service experience an excess of work-related injuries, compared with males. To investigate this more fully, we analysed data collected routinely by the Defence Analytical Services Agency on medical discharges in male and female personnel in the British armed forces. We found that for all disease and injury categories of medical discharge there is a statistically significant excess in females; this disparity is particularly marked for discharges on account of injury [relative risk (RR) = 1.65, 95% confidence interval (95% CI) = 1.30-2.10] and musculoskeletal disease (RR = 3.34, 95% CI = 2.75-4.06). Royal Navy females are eight times more likely (RR = 7.92, 95% CI = 3.03-20.66) and Army females seven times more likely (RR = 6.53, 95% CI = 2.60-16.42) than Royal Air Force females to be medically discharged on account of injury. Over the period 1993-1996, there was a statistically significant increase in the rate of medical discharge for both musculoskeletal disease and injury in female personnel in the British armed forces. During the period 1996-2000, a marked gender differential was maintained, but the rate of increase in females reached a plateau. We concur with previous investigators that mixed-sex training imposes particular ergonomic stresses on females and that it is a major risk factor for overuse injury. We discuss other possible explanations for the marked gender differential in medical discharge rates in the military. Some changes to training programmes are now being introduced to correct this health inequality, but further interventions are needed. Modifications to training programmes must be audited systematically and candidate interventions tested through randomized controlled trials.

Topics: Accidents, Occupational; Female; Fractures, Bone; Humans; Incidence; Military Personnel; Musculoskeletal Diseases; Occupational Diseases; Physical Education and Training; Risk; Sex; Soft Tissue Injuries; United Kingdom