期刊名称：Annals of Agricultural and Environmental Medicine
印刷版ISSN：1232-1966
电子版ISSN：1898-2263
出版年度：2018
卷号：25
期号：3
页码：1-4
DOI：10.26444/aaem/78787
出版社：Institute of Agricultural Medicine in Lublin
摘要：Introduction. One possible way of iron loss is sweating. It is unclear how physical activity performed by untrained individuals
affects the iron status in sweat.
Objective. The purpose of this study was to analyse iron concentration in sweat during 4-week exercise training to determine
the changes in iron excretion during follow-up exercises.
Materials and method. 43 untrained volunteers participated in the study, 29 of whom completed the full exercise
programme. The training programme consisted of exercises on a cycle ergometer and cross-trainer. In the first week,
participants exercised for 8 minutes on each device, in the second for 10 minutes, and in the third and fourth weeks they
exercised for 15 min on each device. Intensity was submaximal and defined as 85% of maximal heart rate. A sterile sweat
patch was placed on the skin between shoulder blades.
Results. Concentration of iron on the first and the fifteenth day of exercises was comparable and statistically insignificant.
Iron concentration was highly increased on the last day of training in comparison with first (p<0.001) and fourteenth day
(p<0.006). The median of iron concentration in 29 samples on the first day of sampling was 21.2 ppb, in the fifteenth –
52.5 ppb, and on the twenty-eighth day – 286.2 ppb. In relation with the sodium concentration, the iron content was also
increased on the twenty-eighth day of the training programme (p<0.005).
Conclusions. Iron sweat loss significantly increased during the 4-week exercise programme. A possible explanation may
be improvement in the thermoregulation mechanism and secretory activity of sweat glands. Iron sweat loss may be an
indicator of iron deficiency observed in active individuals.
