Effects of 8-week increment aerobic exercise program on bone metabolism and body composition in young non-athletes

Cvetko, Erna Davidović; Nešić, Nebojša; Matić, Anita; Ahić, Jasminka Milas; Drenjančević-Perić, Ines

doi:10.1007/s00421-022-04900-y

Cited by 2 publications

(1 citation statement)

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“…Thus, our results indicate no significant difference in bone formation or resorption in this selection of runners and controls. However, biomarkers of bone metabolism are typically measured systemic and, therefore, do not necessarily reflect bone remodelling at each specific site 32 33. Finally, satisfactory levels of vitamin D in both groups and no difference between the groups suggest that vitamin D status cannot explain the differences we observed in BMD.…”

Section: Discussionmentioning

confidence: 82%

Bone health in Norwegian female elite runners: a cross-sectional, controlled study

Kyte

Haakstad

Hisdal

et al. 2023

BMJ Open Sport Exerc Med

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ObjectiveThe primary objective was to compare bone mineral density (BMD) in Norwegian female elite long-distance runners with a control group of inactive females. Secondary objectives were to identify cases of low BMD, to compare the concentration of bone turnover markers, vitamin D and symptoms of low energy availability (LEA) between the groups, and to identify possible associations between BMD and selected variables.MethodsFifteen runners and fifteen controls were included. Assessments included dual-energy X-ray absorptiometry measurement of BMD in the total body, lumbar spine and dual proximal femur. Blood samples included endocrine analyses and circulating bone turnover markers. The risk of LEA was assessed through a questionnaire.ResultsRunners had higher Z-scores in the dual proximal femur (1.30 (0.20 to 1.80) vs 0.20 (−0.20 to 0.80), p<0.021) and total body (1.70 (1.20 to 2.30) vs 0.90 (0.80 to 1.00), p<0.001). The lumbar spine Z-score was similar between groups (0.10 (−0.70 to 0.60) vs −0.10(−0.50 to 0.50), p=0.983). Three runners had low BMD (Z-score <−1) in the lumbar spine. Vitamin D and bone turnover markers showed no differences between the groups. Forty-seven per cent of the runners were at risk of LEA. Dual proximal femur BMD showed a positive correlation to estradiol and a negative correlation to LEA symptoms in runners.ConclusionNorwegian female elite runners had higher BMD Z-score in the dual proximal femur and total body compared with controls, while no difference was observed in the lumbar spine. The advantages of long-distance running on bone health seem to be site specific, and there is still a need for the prevention of LEA and menstrual disorders in this group.

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Section: Discussionmentioning

confidence: 82%