Knee Injuries in Normal-Weight, Overweight, and Obese Runners: Does Body Mass Index Matter?

Objective: To investigate whether the proportion of running-related knee injuries differed in normal-weight, overweight, and obese runners.

Design: Comparative study.

Methods: Data from 4 independent prospective studies were merged (2612 participants).

Randomised controlled trials (RCTs) in sports injury research: authors-please report the compliance with the intervention.

Background: In randomised controlled trials (RCTs) of interventions that aim to prevent sports injuries, the intention-to-treat principle is a recommended analysis method and one emphasised in the Consolidated Standards of Reporting Trials (CONSORT) statement that guides quality reporting of such trials. However, an important element of injury prevention trials-compliance with the intervention-is not always well-reported. The purpose of the present educational review was to describe the compliance during follow-up in eight large-scale sports injury trials and address compliance issues that surfaced.

The Garmin-RUNSAFE Running Health Study on the aetiology of running-related injuries: rationale and design of an 18-month prospective cohort study including runners worldwide.

Introduction: Running injuries affect millions of persons every year and have become a substantial public health issue owing to the popularity of running. To ensure adherence to running, it is important to prevent injuries and to have an in-depth understanding of the aetiology of running injuries. The main purpose of the present paper was to describe the design of a future prospective cohort study exploring if a dose-response relationship exists between changes in training load and running injury occurrence, and how this association is modified by other variables.

Time-to-event analysis for sports injury research part 2: time-varying outcomes.

Background: Time-to-event modelling is underutilised in sports injury research. Still, sports injury researchers have been encouraged to consider time-to-event analyses as a powerful alternative to other statistical methods. Therefore, it is important to shed light on statistical approaches suitable for analysing training load related key-questions within the sports injury domain.

Time-to-event analysis for sports injury research part 1: time-varying exposures.

Background: is a key question in sports medicine and sports science. To address this question the investigator/practitioner must analyse exposure variables that change over time, such as change in training load. Very few studies have included time-varying exposures (eg, training load) and time-varying effect-measure modifiers (eg, previous injury, biomechanics, sleep/stress) when studying sports injury aetiology.

How Do Novice Runners With Different Body Mass Indexes Begin a Self-chosen Running Regime?

Background: Overweight and obese novice runners are subjected to a higher load per stride than their normal-weight peers. Do they reduce their running dose accordingly when beginning a self-chosen running regime?

Objectives: To describe and compare the preferred running dose in normal-weight, overweight, and obese novice runners when they commence a self-chosen running regime.

Methods: In this exploratory, 7-day prospective cohort study, 914 novice runners were categorized into 1 of 3 exposure groups, based on their body mass index (BMI): (1) normal weight (BMI less than 25 kg/m, n = 405; reference group), (2) overweight (BMI of 25 to less than 30 kg/m, n = 341), and (3) obese (BMI of 30 kg/m or greater, n = 168).

Running more than three kilometers during the first week of a running regimen may be associated with increased risk of injury in obese novice runners.

Background: Training guidelines for novice runners are needed to reduce the risk of injury. The purpose of this study was to investigate whether the risk of injury varied in obese and non-obese individuals initiating a running program at different weekly distances.

Methods: A volunteer sample of 749 of 1532 eligible healthy novice runners was included in a 3-week observational explorative prospective cohort study.