8 ± 2.63 kg and fat percentage was 25% (dual-energy X-ray absorptiometry, 2019). Crank-based power meter data showed absolute mean maximal power (in watts) improvement over the 5 s to 4 hr range through the 2014-2019 period, while relative mean maximal power (in watts per kilogram) likely peaked in the 2015-2016 season for 5 min, 20 min, and 30 min, but remained mostly unchanged across seasons. Results suggest that (a) the best relative power output associated with aerobic capacity (5 min to 1 hr) can be achieved during menstrual dysfunction, (b) high performance achieved despite an increase in body mass, and (c) resumption of menses is achievable while maintaining high training loads when coupled with high energy availability.PURPOSE To assess the validity and reliability of a novel movement-performance assessment tool for climbing/sport climbing. METHODS First, salient climbing movement-performance factors were identified through an iterative consultation process with 10 expert climbing coaches; the resulting Climber's Movement Performance Assessment Tool (CM-PAT) contained 14 items in 5 categories. Second, 61 intermediate to advanced climbers ascended a single route, which was video recorded. Subsequently, 4 experienced (>10 y coaching) coaches used the CM-PAT to observe and score the climbers' performance. Interrater reliability and comparisons with existing measures of climbing performance (6-mo self-reported ability, success and failure, climbing pace [m·min-1], and geometric entropy) were made. RESULTS Intraclass correlation coefficient (2,k) for the 4 raters demonstrated excellent reliability (>.81) between observers and good to excellent test-retest reliability (.71-.91). Pearson correlations between self-reported ability and CM-PAT scores explained 61% of the variance in self-reported climbing performance compared with 16% for geometric entropy and 52% for climbing pace. Considering differences in successful and unsuccessful climbers, the CM-PAT (P less then .0005; d = 2.14), geometric entropy (P = .014; d = 0.67), and pace (P less then .0005; d = 1.88) were able to differentiate between groups. CONCLUSIONS The CM-PAT is the first sport climbing performance observational instrument to be developed through a thorough iterative process with expert coaches. Excellent interrater and test-retest reliability and excellent agreement with self-reported ability and with existing quantitative measures of performance support its recommendation for use in coaching and research contexts. Notably, a key advantage over existing measures is the identification of coachable elements of performance.People with Parkinson disease demonstrate increased gait variability, but the primary variability sources are poorly understood. People with Parkinson disease and freezing of gait (freezers) have greater gait impairments than people with Parkinson disease without freezing of gait (nonfreezers), which may relate to cerebellar dysfunction. Thirteen freezers and 31 nonfreezers completed backward, forward, and forward with dual task gait trials. Sagittal joint angle waveforms were extracted for the hip, knee, and ankle using 3D motion capture. Decomposition indices were calculated for the 3 joint combinations. Principal component analysis extracted variance sources from the joint waveforms. Freezers had significantly greater decomposition between hip-ankle (F1,42 = 5.1, P = .03) and hip-knee (F1,42 = 5.3, P = .03) movements. The principal component analysis did not differentiate freezers and nonfreezers; however, primary variance sources differed between conditions. Primary variance during forward and forward with dual task gait came from joint angle magnitude and peak angle timing. Backward gait showed primary variance from joint angle magnitude and range of motion. The results show that freezers decompose movement more than nonfreezers, implicating cerebellar involvement in freezing of gait. Primary variance differs between gait conditions, and tailoring gait interventions to address variability sources may improve intervention efficacy.Children with visual impairments often exhibit difficulties with locomotor skills (e.g., the ability to move one's body from one place to another), warranting the need for ecologically valid interventions with conditions that attempt to match the real world in a variety of settings. Parents and physical education teachers are the ones choosing to provide movement opportunities for children with visual impairments and must be included in any ecologically valid intervention strategy. This was a descriptive-analytic study.  https://www.selleckchem.com/products/cinchocaine.html  To support the greatest diversity in settings, the authors recruited 94 participants (blind = 44 and low vision = 50; Mage = 13.01 years, SD = 3.26) from schools for the deaf and blind in the United States (teacher led, n = 17) or Latvia (teacher led, n = 57), through an online LISTSERV throughout the United States (parent led, n = 10), and a control subgroup (n = 10). At the pretest, no participant's motor development met age expectations. Children with visual impairments from multiple locations and cultures significantly improved compared with controls who did not. Results were most favorable when the physical educator was the interventionist. However, further research is needed to replicate these findings.CONTEXT Documentation of patient outcomes following injury is critical to ensure that patients are receiving the best care. Several patient-reported outcome measures (PROMs) have been developed to assess knee-related function following injury; however, there is limited data investigating the measurement properties of these instruments using Rasch model analyses. OBJECTIVE To evaluate the measurement properties of several PROMs through application of the Rasch measurement model. DESIGN Cross-sectional study. SETTING Clinical setting. PATIENTS OR OTHER PARTICIPANTS A convenience sample of 160 adults (mean age = 28.08 [10.95] y; male = 38.10%) were recruited for this study. Data collected were combined with existing pilot data from an earlier study containing de-identified Knee Injury and Osteoarthritis Outcome Score (KOOS) data from 79 adults with knee injuries resulting in a total sample size of 239 adults. INTERVENTION(S) Psychometric evaluation of the KOOS, International Knee Documentation Committee subjective knee form, and the Marx Activity Rating Scale using the Rasch partial credit model.