Effects Of Shuttlecock Exercise On Bone Metabolism - Related Hormone Levels In Postmenopausal Women

Background and Purpose: Shuttlecock kicking exercise is a whole body movement that one foot kick and the other maintain the body balance.People need move pace continuously and bear their weight. People can have shuttlecock kicking exercise on the flat streets and lanes, courtyards, parks. Shuttlecock kicking exercise is suitable for all ages and small shuttlecock is the only sports equipment. This exercise is widely loved by people, has a broad mass base in the whole country.Shuttlecock kicking exercise is a folk sports project that also recommended by State Physical Culture Administration.Research has shown that walking exercise is one of the world’s best aerobic exercise and can also increase the muscle strength and bone density in older women.Walking exercise is also a weight bearing periodic exercise that requires whole body participation.Our experimental group has already found that shuttlecock kicking exercise can not only enhance bone mineral density in postmenopausal women, but have great help to balance ability and muscle strength.Shuttlecock kicking exercise and walking exercise have some similar characteristics to increase bone mineral density,therefore,it’s significance to choose the best exercise mode after compare two motions’ effect and mechanism to bone. Bone mineral density rapid declining and osteoporosis are important risk factors of fractures and fall in postmenopausal women,therefore, the movement has great significance for the increasing of bone mineral density in postmenopausal women, but the exact mechanism of the shuttlecock kicking to increase the bone mineral density is not known.We assume the shuttlecock movement that improve bone mineral density in postmenopausal women is through regulating bone metabolism related hormones, promoting osteoblast and Inhibiting osteoclast.Therefore, we design a cross-sectional study to observe the changes of bone mineral density and bone related hormones in postmenopausal women who participate in long-term shuttlecock kicking exercise and long-term walking exercise.We investigate the hormone metabolism of shuttlecock kicking exercise increasing bone mineral density to not only provide experimental basis for bone health but also to provide new experimental evidence for the popularization of the exercise in older women.Methods: Sixty middle aged and old women from Zhongshan Park,Shuishang Park,Nankai Park and surrounding community were selected as the research object.Through the questionnaire confirmed that they have menopause.30 were experimental group with at least two years long-term shuttlecock kicking exercise and 30 for control group with at least two years long-term walking exercise.All of the subjects’ bone mineral density with dual energy X-ray scan and serum 25(OH)D, PTH, FSH,and E2 proteins by ELISA were measured.We determine serum calcium level by Arsenazo III method and determine serum phosphorus level by Phosphomolybdic acid colorimetry. SPSS19.0 statistical software was used for analyses the data. P=0.05 was set a statistic significant level.Results: 1.Shuttlecock kicking group’s bone mineral density was significantly higher than that of walking group:The results showed that shuttlecock kicking group’s femoral bone mineral density, bone mineral density of lumbar L2-L4 and whole body bone mineral density are significantly higher than that of walking group.2.The changes of serum related hormones concentration in the shuttlecock kicking group are more obvious than those in walking group:The results showed that shuttlecock kicking group’s serum 25(OH) D concentration( 35.54 + 8.01ng/ml) was significantly higher than that of walking group(27.51±8.20ng/ml);Shuttlecock kicking group’s serum E2 concentration(128.62±51.10pmol/L) was significantly higher than that of walking group(99.44±38.05pmol/L);Shuttlecock kicking group’s serum FSH concentration(42.15±9.91IU/L) was significantly lower than that of walking group(48.83±10.46IU/L);Shuttlecock kicking group’s serum PTH concentration(33.62±7.59ng/L) was significantly lower than that of walking group(38.50±7.53ng/L);3.The positive relationships were found between the L2-L4 bone mineral density,femoral neck bone mineral density, whole body bone mineral density serum and serum 25(OH)D(p<0.01), the correlation coefficients are 0.680, 0.500 and 0.517;The positive relationships were found between the L2-L4 bone mineral density,femoral neck bone mineral density, whole body bone mineral density serum and serum E2, the correlation coefficients are 0.422( p<0.05),0.595(p<0.01) and0.666(p<0.01);The negative relationships were found between the L2-L4 bone mineral density,femoral neck bone mineral density, whole body bone mineral density and serum PTH(P<0.05),the correlation coefficients are-0.485 、-0.411 and-0.432;The negative relationships were found between the L2-L4 bone mineral density,femoral neck bone mineral density, whole body bone mineral density and serum FSH(P<0.01),the correlation coefficients are-0.528、-0.557 and-0.601. 4.Both of shuttlecock kicking group’s serum calcium and serum phosphorus are no significant difference with those of walking group.The level of serum calcium and serum phosphorus are both in normal range.Conclusion: A long-term shuttlecock kicking exercise promote postmenopausal women with estrogen production,25(OH) D activity and the decreasing of PTH may be related to the role of that shuttlecock kicking exercise can increase bone mineral density in the postmenopausal women.