Prevention of Non-Contact Anterior Cruciate Ligament Injuries among Youth Female Athletes: An Umbrella Review.

Anterior cruciate ligament (ACL) injuries account for a large percentage of knee injuries, disproportionately affecting female athletes. To help health professionals stay current, we performed an umbrella review to evaluate the effectiveness of ACL injury prevention programs in reducing non-contact ACL injury rates, determine the effective components within interventions, and provide clinical recommendations. Twelve databases (Medline, Embase, Cochrane Database of Systematic Reviews, SPORTDiscus, Cumulative Index to Nursing and Allied Health Literature, PEDro, Web of Science Core Collection, Epistemonikos, TRIP, BC Guidelines and Protocols, CPG Infobase, ProQuest Dissertations and Theses Global) were searched in May 2021 to identify relevant systematic reviews and meta-analyses.

Evaluating the Accuracy of Using Fixed Ranges of METs to Categorize Exertional Intensity in a Heterogeneous Group of Healthy Individuals: Implications for Cardiorespiratory Fitness and Health Outcomes.

Background: Appropriate quantification of exertional intensity remains elusive.

Objective: To compare, in a large and heterogeneous cohort of healthy females and males, the commonly used intensity classification system (i.e.

Menstrual and oral contraceptive cycle phases do not affect submaximal and maximal exercise responses.

To examine whether the menstrual or monophasic oral contraceptive cycle phases affect submaximal (oxygen uptake ( O ) kinetics, maximal lactate steady-state (MLSS)) and maximal ( O , time-to-exhaustion (TTE)) responses to exercise in healthy, active women. During the mid-follicular or inactive-pill phase and the mid-luteal or active-pill phase of the respective menstrual or oral contraceptive cycle, 15 non-oral contraceptive users (mean and standard deviation (SD) (±): 27 ± 6 years; 171 ± 5 cm; 65 ± 7 kg) and 15 monophasic oral contraceptive users (24 ± 4 years; 169 ± 10 cm; 68 ± 10 kg) performed: one O kinetics test; one ramp-incremental test; two to three 30-minute constant-load cycling trials to determine the power output corresponding to MLSS (MLSS ), followed by a TTE trial. The phase of the menstrual or oral contraceptive cycle did not affect the time constant of the O kinetics response (τ O ) (mid-follicular, 20 ± 5 seconds and mid-luteal, 18 ± 3 seconds; inactive-pill, 22 ± 8 seconds and active-pill, 23 ± 6 seconds), O (mid-follicular, 3.

Effects of the menstrual and oral contraceptive cycle phases on microvascular reperfusion.

New Findings: What is the central question of this study? What are the effects of the menstrual (early follicular and mid-luteal) or monophasic oral contraceptive (inactive- and active-pill) cycle phases on vascular reperfusion of lower limb microvasculature in healthy, active women using the near-infrared spectroscopy (NIRS) vascular occlusion test (VOT) technique? What is the main finding and its importance? We demonstrated that vascular responsiveness in the lower limb microvasculature remained unchanged between the early follicular and mid-luteal phases of the menstrual cycle and inactive- and active-pill phases of the oral contraceptive cycle. These data support that controlling for the cycle phases, within the specific times evaluated in this study, might not be necessary when assessing NIRS-VOT reperfusion rates.

Abstract: The objective was to examine whether the menstrual or monophasic oral contraceptive cycle phases affect microvascular responsiveness of the lower limb in healthy, active women.

A Critical Evaluation of Current Methods for Exercise Prescription in Women and Men.

Unlabelled: Common methods to prescribe exercise intensity are based on fixed percentages of maximum rate of oxygen uptake (V˙O2max), peak work rate (WRpeak), maximal HR (HRmax). However, it is unknown how these methods compare to the current models to partition the exercise intensity spectrum.

Purpose: Thus, the aim of this study was to compare contemporary gold-standard approaches for exercise prescription based on fixed percentages of maximum values to the well-established, but underutilized, "domain" schema of exercise intensity.