Effects of Different Landing Postures on Bone Mineral Density and Content During High-Impact Exercises

Yixue LUO; Chenyu LUO; Yuhui CAI; Tianyun JIANG; Yalin CUI; Linzhen WANG; Yubo FAN

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Effects of Different Landing Postures on Bone Mineral Density and Content During High-Impact Exercises

VernacularTitle:高冲击运动时不同着陆姿势对骨密度和骨矿含量的影响
Author: Yixue LUO ¹ ; Chenyu LUO ¹ ; Yuhui CAI ¹ ; Tianyun JIANG ¹ ; Yalin CUI ¹ ; Linzhen WANG ¹ ; Yubo FAN ^{1
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Author Information

1. Key laboratory for biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University
2. National Research Center for Rehabilitation Technical Aids
Publication Type:Journal Article
Keywords: high-impact exercises; parachute; basketball; bone mineral density (BMD); bone mineral content (BMC); variable loads
From: Journal of Medical Biomechanics 2018;33(2):E168-E173
CountryChina
Language:Chinese
Abstract: Objective To study effects of different types of high-impact exercises on the increment of bone mineral density (BMD) and bone mineral content (BMC) . Methods Thirty-nine male volunteers, including 13 hoopsters, 13 paratroopers, and 13 common college students as the control, were recruited and divided into two subgroups (subgroup 1:20-22 years old; subgroup 2:23-25 years old). Their BMDs and BMCs on calcaneus, first through fifth metatarsus, hip, and lumbar spine (L1-4) were evaluated. Results The BMC of calcaneus, the first and second metatarsals, total lumbar spine, and total hip in the hoopster group was significantly higher than that in the control group and paratrooper group. The hoopster group obtained statistically higher BMD at the lumbar spine, hip, and femoral neck than the other two groups. However, the BMCs and BMDs of the paratrooper group and control group had no significant differences at almost all measured anatomical locations. Conclusions BMC and BMD are not always in positive correlation with vertical ground reaction forces during normal exercises. Compared with parachuting training, playing basketball as a kind of variable load exercise can effectively increase BMC and BMD, and is more beneficial for reducing the risk of osteoporotic fracture.