目的:探讨抗阻训练(RT)治疗慢性非特异性腰痛(CNSLBP)的临床疗效,通过分析提供RT的剂量与腰部功能改善的关系,以及影响结果最显著的剂量区间。方法:计算机检索2022年12月前CNKI、维普数据库、万方数据库、PubMed、MEDLINE、Embase、Web ...目的:探讨抗阻训练(RT)治疗慢性非特异性腰痛(CNSLBP)的临床疗效,通过分析提供RT的剂量与腰部功能改善的关系,以及影响结果最显著的剂量区间。方法:计算机检索2022年12月前CNKI、维普数据库、万方数据库、PubMed、MEDLINE、Embase、Web of Science、Cochrane对照试验注册中心发表的RT治疗CNLBP的随机对照试验。对纳入文献进行筛选,资料提取,质量评价后,采用Stata 14软件进行Meta分析,Meta回归分析以及亚组分析。结果:共纳入13篇RCT,19项结果。RT对腰部功能改善有显著影响[SMD=-1.01,95%CI(-1.42,-0.60),P<0.01]。每组次数(P=0.026)对腰部功能改善影响显著。训练次数10~12个/组(SMD=-2.38),训练周期为9~12周(SMD=-1.68),训练频率1~2次/周(SMD=-1.08),训练组数为1组(SMD=-1.96),训练时长30~39min(SMD=-0.89),训练强度大于70%1RM(SMD=-2.12),组间休息0~30s(SMD=-0.92)对腰部功能改善更有效。结论:RT可以显著改善患者腰部功能受限。未来的研究应特别关注训练变量的详细描述,以便深入分析CNSLBP在RT后的剂量-反应关系。展开更多
We obtain some sufficient conditions on the number of non-（sub）normai nonabelian subgroups of a finite group to be solvable, which extend a result of Shi and Zhang in 2011.
In this paper, we classify finite 2-groups all of whose nonnormal subgroups have orders at most 2^3. Together with a known result, we completely solved Problem 2279 proposed by Y. Berkovich and Z. Janko in Groups of P...In this paper, we classify finite 2-groups all of whose nonnormal subgroups have orders at most 2^3. Together with a known result, we completely solved Problem 2279 proposed by Y. Berkovich and Z. Janko in Groups of Prime Power Order, Vol. 3.展开更多
We classify finite p-groups all of whose nonnormal subgroups have orders at most p3, p odd prime. Together with a known result, we completely solved Problem 2279 proposed by Y. Berkovich and Z. Janko in Groups of Prim...We classify finite p-groups all of whose nonnormal subgroups have orders at most p3, p odd prime. Together with a known result, we completely solved Problem 2279 proposed by Y. Berkovich and Z. Janko in Groups of Prime Power Order, Vol. 3.展开更多
Suppose that G is a finite p-group. If G is not a Dedekind group, then G has a non-normal subgroup. We use p^M（G） and p^m（G） to denote the maximum and minimum of the orders of the non-normal subgroups of G, respec...Suppose that G is a finite p-group. If G is not a Dedekind group, then G has a non-normal subgroup. We use p^M（G） and p^m（G） to denote the maximum and minimum of the orders of the non-normal subgroups of G, respectively. In this paper, we classify groups G such that M（G） 〈 2m（G） ^- 1. As a by-product, we also classify p-groups whose orders of non-normal subgroups are p^k and p^k＋1.展开更多
A subgroup of index p^k of a finite p-group G is called a k-maximal subgroup of G.Denote by d(G) the number of elements in a minimal generator-system of G and by δ_k(G) the number of k-maximal subgroups which do not ...A subgroup of index p^k of a finite p-group G is called a k-maximal subgroup of G.Denote by d(G) the number of elements in a minimal generator-system of G and by δ_k(G) the number of k-maximal subgroups which do not contain the Frattini subgroup of G.In this paper,the authors classify the finite p-groups with δ_(d(G))(G) ≤ p^2 and δ_(d(G)-1)(G) = 0,respectively.展开更多
In this paper, we study finite groups all of whose nontrivial normal subgroups have the same order. In the solvable case, the groups are determined. In the insolvable case, some characterizations are given.
文摘目的:探讨抗阻训练(RT)治疗慢性非特异性腰痛(CNSLBP)的临床疗效,通过分析提供RT的剂量与腰部功能改善的关系,以及影响结果最显著的剂量区间。方法:计算机检索2022年12月前CNKI、维普数据库、万方数据库、PubMed、MEDLINE、Embase、Web of Science、Cochrane对照试验注册中心发表的RT治疗CNLBP的随机对照试验。对纳入文献进行筛选,资料提取,质量评价后,采用Stata 14软件进行Meta分析,Meta回归分析以及亚组分析。结果:共纳入13篇RCT,19项结果。RT对腰部功能改善有显著影响[SMD=-1.01,95%CI(-1.42,-0.60),P<0.01]。每组次数(P=0.026)对腰部功能改善影响显著。训练次数10~12个/组(SMD=-2.38),训练周期为9~12周(SMD=-1.68),训练频率1~2次/周(SMD=-1.08),训练组数为1组(SMD=-1.96),训练时长30~39min(SMD=-0.89),训练强度大于70%1RM(SMD=-2.12),组间休息0~30s(SMD=-0.92)对腰部功能改善更有效。结论:RT可以显著改善患者腰部功能受限。未来的研究应特别关注训练变量的详细描述,以便深入分析CNSLBP在RT后的剂量-反应关系。
文摘We obtain some sufficient conditions on the number of non-（sub）normai nonabelian subgroups of a finite group to be solvable, which extend a result of Shi and Zhang in 2011.
文摘In this paper, we classify finite 2-groups all of whose nonnormal subgroups have orders at most 2^3. Together with a known result, we completely solved Problem 2279 proposed by Y. Berkovich and Z. Janko in Groups of Prime Power Order, Vol. 3.
基金Acknowledgements The authors cordially thank the referees for detailed and valuable comments, which help them to improve the paper. This work was supported by the National Natural Science Foundation of China （Grant Nos. 11371232, 11101252）, the Natural Science Foundation of Shanxi Province （No. 2012011001, 2013011001）, and Shanxi Scholarship Council of China （No. [201118）.
文摘We classify finite p-groups all of whose nonnormal subgroups have orders at most p3, p odd prime. Together with a known result, we completely solved Problem 2279 proposed by Y. Berkovich and Z. Janko in Groups of Prime Power Order, Vol. 3.
基金This work was supported in part by the National Natural Science Foundation of China （Grant Nos. 11471198, 11771258）.
文摘Suppose that G is a finite p-group. If G is not a Dedekind group, then G has a non-normal subgroup. We use p^M（G） and p^m（G） to denote the maximum and minimum of the orders of the non-normal subgroups of G, respectively. In this paper, we classify groups G such that M（G） 〈 2m（G） ^- 1. As a by-product, we also classify p-groups whose orders of non-normal subgroups are p^k and p^k＋1.
基金supported by the National Natural Science Foundation of China(Nos.11371232,11371177)
文摘A subgroup of index p^k of a finite p-group G is called a k-maximal subgroup of G.Denote by d(G) the number of elements in a minimal generator-system of G and by δ_k(G) the number of k-maximal subgroups which do not contain the Frattini subgroup of G.In this paper,the authors classify the finite p-groups with δ_(d(G))(G) ≤ p^2 and δ_(d(G)-1)(G) = 0,respectively.
基金the National Natural Science Foundation of China (No.10671114)the Natural Science Foun-dation of Shanxi Province (No.20051007)the Returned Abroad-student Fund of Shanxi Province (No.[2004]13-56)
文摘In this paper, we study finite groups all of whose nontrivial normal subgroups have the same order. In the solvable case, the groups are determined. In the insolvable case, some characterizations are given.
