scholarly journals The Relationship Between Workload and Non-Contact Musculoskeletal Injury in College Swimmers: A Prospective Cohort Study

2021 ◽  
Author(s):  
Travis R. Pollen ◽  
David Ebaugh ◽  
Meghan Warren ◽  
Clare E. Milner ◽  
Jennifer A. Taylor ◽  
...  
Keyword(s):  
Cohort Study ◽  
Prospective Cohort Study ◽  
Prospective Cohort ◽  
Injury Rate ◽  
Musculoskeletal Injury ◽  
Overuse Injuries ◽  
College Level ◽  
Division Iii ◽  
Injury Rates ◽  
The Relationship

ABSTRACT Context: Swimmers are known for high training loads and overuse injuries, but few studies have investigated the relationship between the two at the college level. Objective: To determine the association between workload and non-contact musculoskeletal injury in college swimmers. We hypothesized (1) higher overall workload (kilometers swum throughout the season) would be associated with increased odds of injury and (2) the ratio of the current week's (acute) workload divided by the current month's (chronic) workload (i.e., the acute:chronic workload ratio (ACWR)) would be more strongly associated with odds of injury than acute or chronic workloads alone. Design: Prospective cohort study. Setting: College natatorium. Patients or Other Participants: Thirty-seven Division III college swimmers. Main Outcome Measures: Logistic regression using generalized estimating equations was used to calculate odds ratios (OR) with 95% confidence intervals (CI) for injury relative to high workloads and high ACWRs. Injury rates for several ranges of workloads and ACWRs were also calculated. Results: Eleven participants (29.7%) sustained 12 injuries, with seven injuries occurring during the participants' winter training trip. Injury was associated with high acute workloads (OR = 27.1 [95% CI = 8.2, 89.8]) and high ACWRs (OR = 25.1 [95% CI = 7.7, 81.4]) but not high chronic workloads (OR = 2.6 [95% CI = 0.3, 20.0]) or overall workloads (OR = 1.00 [95% CI = 0.99, 1.01]). High acute workloads (>37.2 km/week) and high ACWRs (>1.56) increased injury rate from ≤1% to 15% and 14%, respectively, compared to all lower acute workloads and ACWRs. Conclusions: College swimmers can tolerate high workloads spread out over the season. However, caution should be used when prescribing high acute workloads and high ACWRs (e.g., winter training trip) due to increased odds of injury.

scholarly journals Injuries in Novice Participants during an Eight-Week Start up CrossFit Program—A Prospective Cohort Study

Sports ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 21 ◽  
Author(s):  
Rasmus Tolstrup Larsen ◽  
Andreas Lund Hessner ◽  
Lasse Ishøi ◽  
Henning Langberg ◽  
Jan Christensen
Keyword(s):  
Cohort Study ◽  
Prospective Cohort Study ◽  
Exposure Time ◽  
Prospective Cohort ◽  
Injury Rate ◽  
Injury Incidence ◽  
Injury Rates ◽  
Start Up ◽  
Total Exposure Time

Background: Previously published studies have reported injury rates ranging from 0.74 to 3.3 per 1000 h of exposure in CrossFit participants. However, the existing body of evidence is mainly based on experienced participants; therefore, the injury incidence and injury rate within novice CrossFit participants remains relatively unknown. The aim of this study wasto investigate the injury incidence and injury rate among novice participants in an eight-week CrossFit program. Methods: This survey-based prospective cohort study included CrossFit Copenhagen’s novice members who began an eight-week, free-of-charge membership period. A questionnaire was distributed at baseline and at eight-week follow-up. Information about exposure was retrieved through the online booking system. Injury incidence, defined as proportion of participants who sustained an injury, and injury rates per 1000 h of exposure were calculated. Results: Among the 168 included participants, a total of 28 injuries (14.9%) were reported. The number of injured participants and total exposure time resulted in an injury rate per 1000 h of exposure of 9.5. Conclusions: Compared to the existing body of evidence, the findings in this study indicate that the risk of injuries is higher among novice participants than among experienced CrossFit participants.

THE RELATIONSHIP BETWEEN DIENOGEST (VISANNE®) AND DEPRESSIVE SYMPTOMS: A PROSPECTIVE COHORT STUDY

2021 ◽  
Vol 116 (3) ◽  
pp. e364-e365
Author(s):  
Sung Pil Choo ◽  
SiHyun Cho ◽  
Jung-Ho Shin ◽  
Nayoung Bae ◽  
So Hyun Ahn
Keyword(s):  
Cohort Study ◽  
Depressive Symptoms ◽  
Prospective Cohort Study ◽  
Prospective Cohort ◽  
The Relationship

Dietary Protein and Prognosis of Hepatocellular Carcinoma: A Prospective Cohort Study

2021 ◽  
Author(s):  
Dinuerguli Yishake ◽  
Tong-tong He ◽  
Zhao-yan Liu ◽  
Si Chen ◽  
Yan Luo ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Cohort Study ◽  
Prospective Cohort Study ◽  
Dietary Protein ◽  
Cancer Mortality ◽  
Prospective Cohort ◽  
The Relationship

Dietary protein has been linked with all-cause and cancer mortality. However, the relationship between dietary protein and the prognosis of hepatocellular carcinoma (HCC) is still unknown. The purpose of this...

Circulating angiopoietin-like protein 2 levels and mortality risk in patients receiving maintenance hemodialysis: a prospective cohort study

2019 ◽  
Vol 35 (5) ◽  
pp. 854-860 ◽  
Author(s):  
Jun Morinaga ◽  
Tatsuyuki Kakuma ◽  
Hirotaka Fukami ◽  
Manabu Hayata ◽  
Kohei Uchimura ◽  
...  
Keyword(s):  
Cohort Study ◽  
Prospective Cohort Study ◽  
Mortality Risk ◽  
Prospective Cohort ◽  
Premature Aging ◽  
Skewed Distribution ◽  
Maintenance Hemodialysis ◽  
All Cause Mortality ◽  
Uremic Patients ◽  
The Relationship

Abstract Background Patients undergoing hemodialysis treatment have a poor prognosis, as many develop premature aging. Systemic inflammatory conditions often underlie premature aging phenotypes in uremic patients. We investigated whether angiopoietin-like protein 2 (ANGPTL 2), a factor that accelerates the progression of aging-related and noninfectious inflammatory diseases, was associated with increased mortality risk in hemodialysis patients. Methods We conducted a multicenter prospective cohort study of 412 patients receiving maintenance hemodialysis and evaluated the relationship between circulating ANGPTL2 levels and the risk for all-cause mortality. Circulating ANGPTL2 levels were log-transformed to correct for skewed distribution and analyzed as a continuous variable. Results Of 412 patients, 395 were included for statistical analysis. Time-to-event data analysis showed high circulating ANGPTL2 levels were associated with an increased risk for all-cause mortality after adjustment for age, sex, hemodialysis vintage, nutritional status, metabolic parameters and circulating high-sensitivity C-reactive protein levels {hazard ratio [HR] 2.04 [95% confidence interval (CI) 1.10–3.77]}. High circulating ANGPTL2 levels were also strongly associated with an increased mortality risk, particularly in patients with a relatively benign prognostic profile [HR 3.06 (95% CI 1.86–5.03)]. Furthermore, the relationship between circulating ANGPTL2 levels and mortality risk was particularly strong in patients showing few aging-related phenotypes, such as younger patients [HR 7.99 (95% CI 3.55–18.01)], patients with a short hemodialysis vintage [HR 3.99 (95% CI 2.85–5.58)] and nondiabetic patients [HR 5.15 (95% CI 3.19–8.32)]. Conclusion We conclude that circulating ANGPTL2 levels are positively associated with mortality risk in patients receiving maintenance hemodialysis and that ANGPTL2 could be a unique marker for the progression of premature aging and subsequent mortality risk in uremic patients, except those with significant aging-related phenotypes.

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