The Prevalence of Dietary Supplement Usage in Military Aviators.

BACKGROUND: The prevalence of dietary supplement (DS) and energy drink (ED) usage in military personnel differs from branch to branch and is between 55% and 76% (higher values in special operations forces). Aviators with highly demanding tasks might be especially interested in using dietary supplements. To date, there are only limited data available for this special profession inside the military. METHODS: An internet-based survey was conducted on the prevalence of DS and ED usage, the reasons for their usage and the place of purchase for all wings of the German Armed Forces. RESULTS: Of the 181 pilots who participated in the survey, 34% used DSs and 16% EDs. Usage was linked to sports activities but not to the type of aircraft. DSs were purchased on the internet by 50% of the respondents; mostly protein supplements, magnesium and omega-3fatty acids. Only 42% said they would feel an effect from taking DSs. CONCLUSIONS: Although the present study showed that the prevalence of usage was comparable to that of the civilian population, the sources of supply and the range of the substances taken give cause for concern. This calls for education and information campaigns to make the pilots aware of the possible risks to their health.

Physical performance in middle age and old age: good news for our sedentary and aging society.

BACKGROUND: Physical performance often declines in middle age, but it is unclear to what extent this is due to biological aging. It can be difficult to determine whether such physical changes are truly age-related, as they might alternatively be explained as the negative consequences of a sedentary lifestyle. METHODS: We assessed the endurance of a physically active subgroup of the population by performing an age- and sex-stratified analysis of over 900,000 running times of marathon and half-marathon participants aged 20 to 79. We also analyzed the responses of 13,171 marathon and half-marathon runners to a questionnaire about sports, lifestyle, and health. RESULTS: No significant age-related decline in performance appears before age 55. Moreover, only a moderate decline is seen thereafter; in fact, 25% of the 65- to 69-year-old runners were faster than 50% of the 20- to 54-year-old runners. Our survey also revealed that more than 25% of the 50- to 69-year-old runners had started their marathon training only in the past 5 years. CONCLUSION: Performance losses in middle age are mainly due to a sedentary lifestyle, rather than biological aging. The large contingent of older "newcomers" among marathon runners demonstrates that, even at an advanced age, non-athletes can achieve high levels of performance through regular training.

Utilization and implementation of sports medical screening examinations: survey of more than 10 000 long-distance runners.

INTRODUCTION: Preventive medical checkups may help to lower the health risks incurred by participation in sporting activity. However, there are no epidemiologically relevant data on either utilization or implementation of such checkups. METHODS: An internet questionnaire (www.dshs-koeln.de/pace) and personal interviews of long-distance runners were used to obtain information on the acceptance and realization of medical checkups. RESULTS: Only 50% of 10 025 runners had undergone preventive medical screening. Beginners and returnees to long-distance running are significantly less likely to have themselves checked than performance-oriented athletes (42.0% vs. 59.9%; p < 0.01). Moreover, the survey revealed deficiencies in many sports medical tests; for example, over 15% of runners screened stated that their checkup had not included physical examination. Resting ECG was performed in only 67.4% of cases. DISCUSSION: The findings underline the need for qualified pre-emptive sports medical screening. If current public health campaigns are successful, higher numbers of overweight, untrained persons of all age groups will have to be examined and advised.