Starkkearney5208

This study investigated the relationships between internal and external training load metrics across a 2-week 'in-season' microcycle in squash. 134 on-court and 32 off-court 'conditioning' sessions were completed by fifteen elite squash players with an average (±SD) of 11 ± 3 per player. During every session, external load was captured using a tri-axial accelerometer to calculate Playerload; i.e., the instantaneous rate of change of acceleration across 3-dimensional planes. Internal load was measured using heart rate (HR), global (sRPE) and differential RPE (dRPE-Legs, dRPE-Breathing). Additionally, HR was used to calculate Banister's, Edward's and TEAM TRIMPs. Across 166 training sessions, Playerload was moderately correlated with TRIMP-Banister (r = 0.43 [95% CI 0.29-0.55], p less then 0.001) and TRIMP-Edwards (r = 0.50 [0.37-0.61], p less then 0.001). Association of Playerload with TRIMP-TEAM (r = 0.24 [0.09-0.38], p = 0.001) was small. There was a moderate correlation between sRPE and Playerload (r = 0.46 [0.33-0.57], p less then 0.001). Association of sRPE was large with TRIMP-Banister (r = 0.68 [0.59-0.76], p = 0.001), very large with TRIMP-Edwards (r = 0.79 [0.72-0.84], p less then 0.001) and moderate with TRIMP-TEAM (r = 0.44 [0.31-0.56], p less then 0.001). Both dRPE-Legs (r = 0.95 [0.93-0.96], p less then 0.001) and dRPE-Breathing (r = 0.92 [0.89-0.94], p less then 0.001) demonstrated nearly perfect correlations with sRPE and with each other (r = 0.91 [0.88-0.93], p less then 0.001). Collection of both internal and external training load data is recommended to fully appreciate the physical demands of squash training. During a training microcycle containing a variety of training sessions, interpreting internal or external metrics in isolation may underestimate or overestimate the training stress a player is experiencing.Although there is a commonly held belief within the baseball community that delivery from the stretch confers more stress at the elbow and shoulder joints than delivery from the windup, there remains little evidence in the literature investigating this hypothesis. This study aimed to help address this gap in the literature by studying both intra-pitcher kinematic sequence variability, and intra-pitcher joint torque variability when throwing from the windup vs. the stretch. We hypothesized that 1) each pitchers' kinematic sequence would remain similar whether throwing from the windup or stretch, and 2) Kinematic sequence would influence peak arm torque more than delivery method. This cross-sectional 3D biomechanical study included 88 pitches thrown by ten (6 collegiate, 4 high school) pitchers with a mean age of 17.60 ± 2.63 years. Pitch velocity, throwing shoulder/elbow torques and the kinematic sequence of each pitch utilizing segmental peak angular velocities were captured. No statistically significant differences in ball velocity (p = 0.17), peak shoulder external rotation torque (p = 0.80), shoulder extension torque (p = 0.97), or elbow valgus torque (p = 0.83) were found between delivery approaches. Three primary kinematic sequences were identified. selleck chemical Shoulder external rotation torque [F(53,2) = 10.992, ɳ2 = .293, p less then 0.00], shoulder extension torque [F(53,2) = 15.517, ɳ2 = .369, p less then 0.00] and elbow valgus torque [F(53,2) = 9.994, ɳ2 = .274, p less then 0.00] did vary significantly across these three kinematic sequence patterns. Our data suggest that the kinematic sequence influences shoulder and elbow torque more than the delivery approach. Instructing ideal kinematic sequence may be more influential for injury avoidance than delivery method.Reports show that children's physical activity (PA) levels are related to FMS proficiency; however, whether PA levels directly improve FMS is uncertain. This study investigated the responses of PA levels and FMS proficiency to active play (AP) and guided active play (GAP) interventions. Three community programs (seven-weeks; 4d·wk-1) were randomly assigned to i) active play (CON); ii) locomotor skills (LOC) guided active play (GAP); and iii) object control skills (OC) GAP groups. Children's (n = 52; 6.5 (0.9) yr) interventions included continuous and/or intermittent cooperative games focused on either locomotor skills (i.e. blob tag, red-light-green-light) or object control skills i.e., hot potato, racket balloons, 4-way soccer). PA levels (accelerometers) were assessed on 2 of 4 sessions per week throughout the program. The Test of Gross Motor Development-2 (TGMD-2) was used to assess FMS scores. The changes for CON and LOC interventions for locomotor standard scores were -0.83 (2.61) vs. 2.6 (2.64) (α = 0.022), for locomotor percentiles -9.08 (36.7) vs. 20.1 (30.4) (α = 0.033) and for gross motor quotient percentiles -4.3 (30.3) vs. 24.1 (29.6) (α = 0.022). Children's PA levels averaged 158.6 (6.6) kcal·55min-1 for CON vs. 174.5 (28.3) kcal.55min-1 for LOC (α = 0.089) and 170.0 (20.1) kcal·55min-1 for OC (α = 0.144). Moderate-Vigorous PA was 18.4 (8.0) %, 47.9 (7.8) % (α = 0.000) and 51.9 (6.0) % (α = 0.000) for CON, LOC and OC, while time at sedentary/very light PA was 36.4 (9.8) %, 15.1 (4.9) % (α = 0.000) and 14.9 (15.9) %Sed/VL (α = 0.001) during the 7-week program. The OC intervention showed more upper body movement experiences compared to the LOC program (p = 0.020). A guided active play program using LOC cooperative games showed increases in energy expenditure and %MVPA and improved FMS proficiency, but active play did not. For school-aged children (5-7 yr) guided active play using cooperative games may be an effective strategy to improve FMS and promote health and fitness benefits.Working women in Shanghai are a high-risk group of suffering work stress and burnout. Women have been found to be affected by work-family conflicts, which results in lower health-related quality of life (HRQoL), higher job stress, and burnout. This study evaluated the potential physical activity and counselling intervention effects on health outcomes of working women in Shanghai. Participants were randomly recruited from eight communities of Shanghai using the stratified cluster sampling method. A total of 121 female workers took part in this study, who were randomly divided into three groups a control group and two intervention groups (individual-based and group-based intervention). The first intervention involved a moderate physical activity program and an individual based counselling intervention, while the second included the same physical activity program, but with a group counselling approach. Both interventions lasted 12 weeks. Subjective perceptions of work stress, burnout, and HRQoL were measured before and after the intervention.