Abstract:
OBJECTIVE:To determine in female tennis and squash players the effect of biological age (that is, the starting age of playing relative to the age at menarche) at which tennis or squash playing was started on the difference in bone mineral content between the playing and non-playing arms. DESIGN:Cross-sectional study. SETTING:Finnish tennis and squash federations. PARTICIPANTS:105 female Finnish national-level players and 50 healthy female controls. MAIN OUTCOME MEASURES:Differences in bone mineral content in playing and nonplaying (dominant to nondominant) arms (proximal humerus, humeral shaft, radial shaft, and distal radius) were compared in the players and controls and among six groups of players. Players were divided into groups according to the biological age (years before or after menarche) at which their playing careers began: more than 5 years before; 3 to 5 years before; 2 to 0 years before; 1 to 5 years after; 6 to 15 years after; and more than 15 years after. RESULTS:Compared with controls (whose mean +/- SD differences in bone mineral content were 4.6% +/- 4.6%, 3.2% +/- 2.3%, 3.2% +/- 3.8%, and 3.9% +/- 4.3% at the previously noted anatomical sites), the players had a significantly (P < 0.001) larger side-to-side difference in every measured site (15.5% +/- 8.4%, 16.2% +/- 9.8%, 8.5% +/- 6.6, and 12.5% +/- 7.1%). Among players, the group differences in bone mineral content were significant (P < 0.001 to P = 0.005), with the group means clearly decreasing with increasing starting biological age of playing. The difference was two to four times greater in the players who had started their playing careers before or at menarche (lowest mean difference in bone mineral content, 10.5% +/- 7.2%; highest difference, 23.5% +/- 7.2%) than in those who started more than 15 years after menarche (lowest difference, 2.4% +/- 4.8%; highest difference, 9.6% +/- 4.9%). Adjustment for potential confounding factors (age and height) did not change these trends. CONCLUSIONS:Bones of the playing extremity clearly benefit from active tennis and squash training, which increases their mineral mass. The benefit of playing is about two times greater if females start playing at or before menarche rather than after it. The minimal level and minimum number of years of activity necessary to produce these results, the extent to which this benefit is sustained after cessation of intensive training, and the degree to which these results can be extended to other forms of physical activity and other bone sites should be studied further.
journal_name
Ann Intern Medjournal_title
Annals of internal medicineauthors
Kannus P,Haapasalo H,Sankelo M,Sievänen H,Pasanen M,Heinonen A,Oja P,Vuori Idoi
10.7326/0003-4819-123-1-199507010-00003subject
Has Abstractpub_date
1995-07-01 00:00:00pages
27-31issue
1eissn
0003-4819issn
1539-3704journal_volume
123pub_type
杂志文章abstract:BACKGROUND:Homeless persons have high mortality rates. OBJECTIVE:To ascertain causes of death in a group of homeless persons. DESIGN:Cohort study. PATIENTS:17,292 adults seen by the Boston Health Care for the Homeless Program from 1988 to 1993. MEASUREMENTS:Cause-specific mortality rates adjusted for race and rate ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-126-8-199704150-00007
更新日期:1997-04-15 00:00:00
abstract::For an estimated 10 million trips abroad by U.S. residents in 2002, "visiting friends and relatives" (VFR) was a purpose for travel. Made up largely of foreign-born U.S. residents and their children, this population shows disparities in the number of reported cases of many preventable travel-related illnesses compared...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-142-1-200501040-00013
更新日期:2005-01-04 00:00:00
abstract:Background:Frailty assessment may inform surgical risk and prognosis not captured by conventional surgical risk scores. Purpose:To evaluate the evidence for various frailty instruments used to predict mortality, functional status, or major adverse cardiovascular and cerebrovascular events (MACCEs) in older adults unde...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/M16-0652
更新日期:2016-11-01 00:00:00
abstract::We surveyed the faculty, fellows, and residents of a department of medicine to determine the relative importance of each of eight personal characteristics evaluated during the interview of house staff candidates. A booklet containing all possible pairings of the eight characteristics was distributed to 219 participant...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-97-1-108
更新日期:1982-07-01 00:00:00
abstract::The expression of ischemic heart disease was studied in a large kindred with familial hypercholesterolemia. Tendon xanthomas, multiple generation transmission, and the appearance of bimodality in the distributions of total and low-density lipoprotein cholesterol were found. The segregation ratio was 0.9 in females and...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-89-6-871
更新日期:1978-12-01 00:00:00
abstract:OBJECTIVE:To investigate the relation between the quantity of human immunodeficiency virus type 1 (HIV-1) RNA in plasma and the risk for the acquired immunodeficiency syndrome (AIDS) or a decline in the CD4+ T-cell count after seroconversion. DESIGN:Prospective study. PATIENTS:62 homosexual men with documented HIV-1 ...
journal_title:Annals of internal medicine
pub_type: 临床试验,杂志文章,多中心研究
doi:10.7326/0003-4819-122-8-199504150-00003
更新日期:1995-04-15 00:00:00
abstract::The new knowledge of the regulation of cell growth and the genetic and biochemical changes that lead to malignancy have created many new opportunities for cancer drug discovery. These new targets include oncogenes, growth factors and their receptors, signal transduction pathways, and cell differentiation signals. Atte...
journal_title:Annals of internal medicine
pub_type: 评论,杂志文章,评审
doi:10.7326/0003-4819-118-8-199304150-00011
更新日期:1993-04-15 00:00:00
abstract:BACKGROUND:Corticosteroid injections (CSIs) and physical therapy are used to treat patients with the shoulder impingement syndrome (SIS) but have never been directly compared. OBJECTIVE:To compare the effectiveness of 2 common nonsurgical treatments for SIS. DESIGN:Randomized, single-blind, comparative-effectiveness,...
journal_title:Annals of internal medicine
pub_type: 杂志文章,随机对照试验
doi:10.7326/M13-2199
更新日期:2014-08-05 00:00:00
abstract:Background:Central line-associated bloodstream infection (CLABSI) remains prevalent in hospitals in the United States. Objective:To evaluate the impact of a multimodal intervention in hospitals with elevated rates of health care-associated infection. Design:Pre-post observational evaluation of a prospective, national...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究
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更新日期:2019-10-01 00:00:00
abstract::Transmission of the human immunodeficiency virus (HIV) was studied in a group of patients with cancer who received transfusion of blood components harvested from a single, asymptomatic, seropositive donor. Of ten living recipients, nine had antibodies to the virus in fresh or cryopreserved sera at a median of 384 days...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-105-4-519
更新日期:1986-10-01 00:00:00
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journal_title:Annals of internal medicine
pub_type: 杂志文章,实务指引
doi:10.7326/0003-4819-155-3-201108020-00008
更新日期:2011-08-02 00:00:00
abstract:DESCRIPTION:The Women's Preventive Services Initiative (WPSI), a national coalition of women's health professional organizations and patient representatives, developed a recommendation on screening for anxiety in adolescent and adult women to improve detection; achieve earlier diagnosis and treatment; and improve healt...
journal_title:Annals of internal medicine
pub_type: 杂志文章,实务指引
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更新日期:2020-07-07 00:00:00
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journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
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更新日期:2016-10-18 00:00:00
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journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-152-6-201003160-00009
更新日期:2010-03-16 00:00:00
abstract::Adult T-cell leukemia associated with human T-cell leukemia virus type I (HTLV-I) is characterized by a clonal expansion of a CD4-positive subset of T lymphocytes that constitutively express high numbers of interleukin-2 receptors and that frequently infiltrate the skin; osteolytic bone lesions, and hypercalcemia. Usi...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-109-4-274
更新日期:1988-08-15 00:00:00
abstract::We observed the course of cytomegalovirus (CMV) retinitis in 21 eyes of 14 immunosuppressed patients. In two patients, other organisms, specifically Toxoplasma and Candida, also appeared to be causing retinal disease simultaneously. Post-mortem examination was done on 10 eyes from seven patients. At initial presentati...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-93-5-664
更新日期:1980-11-01 00:00:00
abstract:BACKGROUND:Patients with reduced left ventricular function and ventricular enlargement after myocardial infarction are at significantly greater risk for congestive heart failure and death. Nevertheless, recovery of ventricular function occurs in a significant proportion of patients after myocardial infarction, and mode...
journal_title:Annals of internal medicine
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.7326/0003-4819-134-6-200103200-00009
更新日期:2001-03-20 00:00:00
abstract:BACKGROUND:Motor vehicle crashes (MVCs) remain a leading cause of injury-related deaths in the United States. Primary seat belt laws allow vehicle occupants to be ticketed solely for not wearing seat belts, and secondary laws allow ticketing only for failure to wear seat belts in the setting of other violations. OBJEC...
journal_title:Annals of internal medicine
pub_type: 杂志文章
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更新日期:2015-08-04 00:00:00
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journal_title:Annals of internal medicine
pub_type: 杂志文章
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更新日期:2016-02-16 00:00:00
abstract:BACKGROUND:The Department of Health and Human Services recently called for public comment on human subjects research protections. OBJECTIVE:To assess variability in reviews across institutional review boards (IRBs) for a multisite, minimal-risk trial of financial incentives for evidence-based hypertension care and to ...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究
doi:10.7326/0003-4819-156-10-201205150-00011
更新日期:2012-05-15 00:00:00
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journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-110-10-767
更新日期:1989-05-15 00:00:00
abstract::Two kindreds affected by maturity-onset type of hyperglycemia in young people were studied. The postglucose-load hyperglycemia segregated as an autosomal dominant trait; it was always mild, never requiring insulin, and generally seemed to start in the first two decades of life. Glucose, insulin, glucagon, and growth h...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-88-5-595
更新日期:1978-05-01 00:00:00
abstract:BACKGROUND:Growing evidence indicates that peripheral neuropathy (PN) is common even in the absence of diabetes. However, the clinical sequelae of PN have not been quantified in the general population. OBJECTIVE:To assess the associations of PN with all-cause and cardiovascular mortality in the general adult populatio...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/M20-1340
更新日期:2020-12-08 00:00:00
abstract:BACKGROUND:New tests, such as magnetic resonance imaging (MRI) and electron-beam computed tomography (CT), are being developed for the diagnosis of coronary artery disease. OBJECTIVE:To determine the conditions that a new test must meet to be a cost-effective alternative to established imaging tests. DESIGN:Decision ...
journal_title:Annals of internal medicine
pub_type: 杂志文章,meta分析
doi:10.7326/0003-4819-131-9-199911020-00008
更新日期:1999-11-02 00:00:00
abstract:BACKGROUND:Questions remain about the importance of smoking and smoking cessation after incident myocardial infarction. OBJECTIVE:To assess the association between smoking status and risk for recurrent coronary events. DESIGN:Retrospective, population-based, inception cohort study. SETTING:Health maintenance organiz...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-137-6-200209170-00009
更新日期:2002-09-17 00:00:00
abstract:OBJECTIVE:To determine whether the quality of care for common ambulatory conditions is adversely affected when physicians are provided with incentives to limit the use of health services. DESIGN:Retrospective cohort study over a 2-year period. SETTING:Four group practices that cared for both fee-for-service patients ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-115-5-394
更新日期:1991-09-01 00:00:00
abstract::After decades of silence, the German Society for Internal Medicine (DGIM) has made considerable efforts to come to terms with its role and actions during the Nazi era (1933 to 1945). This is particularly important because, with more than 27 000 members, the DGIM is the largest medical society in present-day Germany. S...
journal_title:Annals of internal medicine
pub_type: 历史文章,杂志文章
doi:10.7326/M20-0064
更新日期:2020-09-01 00:00:00
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journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-97-5-659
更新日期:1982-11-01 00:00:00
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journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-126-11-199706010-00006
更新日期:1997-06-01 00:00:00
abstract::The coverage, cost, and quality problems of the U.S. health care system are evident. Sustainable health care reform must go beyond financing expanded access to care to substantially changing the organization and delivery of care. The FRESH-Thinking Project (www.fresh-thinking.org) held a series of workshops during whi...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-150-7-200904070-00115
更新日期:2009-04-07 00:00:00