PDF(Pubmed)
Abstract：
UNASSIGNED: To investigate the effects of 12-week weight-bearing dance aerobics (WBDA) on muscle morphology, strength and functional fitness in older women.
UNASSIGNED: This controlled study recruited 37 female participants (66.31y ± 3.83) and divided them into intervention and control groups according to willingness. The intervention group received 90-min WBDA thrice a week for 12 weeks, while the control group maintained normal activities. The groups were then compared by measuring muscle thickness, fiber length and pennation angle by ultrasound, muscle strength using an isokinetic multi-joint module and functional fitness, such as 2-min step test, 30-s chair stand, chair sit-and-reach, TUG and single-legged closed-eyed standing test. The morphology, strength, and functional fitness were compared using ANCOVA or Mann-Whitney U test to study the effects of 12 weeks WBDA.
UNASSIGNED: Among all recruited participants, 33 completed all tests. After 12 weeks, the thickness of the vastus intermedius (F = 17.85, P < 0.01) and quadriceps (F = 15.62, P < 0.01) was significantly increased in the intervention group compared to the control group, along with a significant increase in the torque/weight of the knee flexor muscles (F = 4.47, P = 0.04). Similarly, the intervention group revealed a significant improvement in the single-legged closed-eyed standing test (z = -2.16, P = 0.03) compared to the control group.
UNASSIGNED: The study concluded that compared to the non-exercising control group, 12-week WBDA was shown to thicken vastus intermedius, increase muscle strength, and improve physical function in older women. In addition, this study provides a reference exercise program for older women.
UNASSIGNED: This controlled study recruited 37 female participants (66.31y ± 3.83) and divided them into intervention and control groups according to willingness. The intervention group received 90-min WBDA thrice a week for 12 weeks, while the control group maintained normal activities. The groups were then compared by measuring muscle thickness, fiber length and pennation angle by ultrasound, muscle strength using an isokinetic multi-joint module and functional fitness, such as 2-min step test, 30-s chair stand, chair sit-and-reach, TUG and single-legged closed-eyed standing test. The morphology, strength, and functional fitness were compared using ANCOVA or Mann-Whitney U test to study the effects of 12 weeks WBDA.
UNASSIGNED: Among all recruited participants, 33 completed all tests. After 12 weeks, the thickness of the vastus intermedius (F = 17.85, P < 0.01) and quadriceps (F = 15.62, P < 0.01) was significantly increased in the intervention group compared to the control group, along with a significant increase in the torque/weight of the knee flexor muscles (F = 4.47, P = 0.04). Similarly, the intervention group revealed a significant improvement in the single-legged closed-eyed standing test (z = -2.16, P = 0.03) compared to the control group.
UNASSIGNED: The study concluded that compared to the non-exercising control group, 12-week WBDA was shown to thicken vastus intermedius, increase muscle strength, and improve physical function in older women. In addition, this study provides a reference exercise program for older women.
摘要：
■为了研究12周负重舞蹈有氧运动（WBDA）对肌肉形态的影响，老年女性的力量和功能健身。
■这项对照研究招募了37名女性参与者（66.31y±3.83），并根据意愿将其分为干预组和对照组。干预组每周三次接受90分钟WBDA，持续12周，对照组保持正常活动。然后通过测量肌肉厚度来比较各组，超声波纤维长度和悬挂角，使用等速多关节模块和功能适应性的肌肉力量，如2分钟步进测试，30-s椅子支架，坐在椅子上，TUG和单腿闭眼站立测试。形态学,力量,使用ANCOVA或Mann-WhitneyU检验比较功能适应性，以研究12周WBDA的影响。
■在所有招募的参与者中，33完成了所有测试。12周后,与对照组相比，干预组的中间股动脉厚度（F=17.85，P<0.01）和股四头肌厚度（F=15.62，P<0.01）显着增加，同时膝关节屈肌的扭矩/重量显着增加（F=4.47，P=0.04）。同样，与对照组相比,干预组单腿闭眼站立试验有显著改善(z=-2.16,P=0.03).
■研究得出的结论是，与非运动对照组相比，12周的WBDA被证明会增厚整个中间区域，增加肌肉力量，改善老年妇女的身体机能。此外,本研究为老年女性提供了参考锻炼方案。
■这项对照研究招募了37名女性参与者（66.31y±3.83），并根据意愿将其分为干预组和对照组。干预组每周三次接受90分钟WBDA，持续12周，对照组保持正常活动。然后通过测量肌肉厚度来比较各组，超声波纤维长度和悬挂角，使用等速多关节模块和功能适应性的肌肉力量，如2分钟步进测试，30-s椅子支架，坐在椅子上，TUG和单腿闭眼站立测试。形态学,力量,使用ANCOVA或Mann-WhitneyU检验比较功能适应性，以研究12周WBDA的影响。
■在所有招募的参与者中，33完成了所有测试。12周后,与对照组相比，干预组的中间股动脉厚度（F=17.85，P<0.01）和股四头肌厚度（F=15.62，P<0.01）显着增加，同时膝关节屈肌的扭矩/重量显着增加（F=4.47，P=0.04）。同样，与对照组相比,干预组单腿闭眼站立试验有显著改善(z=-2.16,P=0.03).
■研究得出的结论是，与非运动对照组相比，12周的WBDA被证明会增厚整个中间区域，增加肌肉力量，改善老年妇女的身体机能。此外,本研究为老年女性提供了参考锻炼方案。
