Effects of Two Semirigid Prophylactic Ankle Stabilizers on Speed, Agility, and Vertical Jump

1994 ◽  
Vol 3 (2) ◽  
pp. 125-134 ◽  
Author(s):  
Christine Bocchinfuso ◽  
Michael R. Sitler ◽  
Iris F. Kimura

The purpose of this study was to compare the effects of two semirigid prophylactic ankle stabilizers on vertical jump, 80-ft sprint, shuttle run, and four-point run performance. Eight male and seven female high school basketball players, who denied prior ankle injury and prophylactic ankle stabilizer experience, completed the four performance events under the conditions of Active Ankle Training Brace, Aircast SportStirrup, and nonbraced control. Data analyses consisted of four 1 × 3 ANOVAs with repeated measures on the independent variable of brace condition. Results of the analysis revealed no significant differences among the experimental conditions for any of the performance events tested. In conclusion, the Active Ankle Training Brace and Aircast SportStirrup did not facilitate or adversely affect performance involving speed, agility, and vertical jump of high school basketball players.

1997 ◽  
Vol 6 (3) ◽  
pp. 235-245 ◽  
Author(s):  
Alison Locke ◽  
Michael Sitler ◽  
Christopher Aland ◽  
Iris Kimura

The purpose of this study was to determine the effect of a softshell prophylactic ankle stabilizer (PAS) on performance in events involving speed, agility, and vertical jump during long-term use. The events examined were the 24.384-m sprint, 12.192-m shuttle ran, and vertical jump. Subjects were high school basketball players who were randomly assigned to either a PAS (n = 11) or a nonbraced control (n = 13) group. Results of the study revealed that the softshell PAS had no significant effect on any of the three performance events tested over a 3-month basketball season. However, there was a significant difference in 24.384-m sprint and 12.192-m shuttle run times across test sessions regardless of treatment group. In conclusion, the softshell PAS neither enhanced nor inhibited performance in activities involving speed, agility, or vertical jump during long-term use.


Sports ◽  
2020 ◽  
Vol 8 (6) ◽  
pp. 90 ◽  
Author(s):  
Russ Best ◽  
Dani Temm ◽  
Holly Hucker ◽  
Kerin McDonald

This study aimed to assess the effects of repeated menthol mouth swilling upon strength and power performance. Nineteen (10 male) participants completed familiarisation and experimental trials of repeated menthol mouth swilling (0.1% concentration) or control (no swill) in a randomised crossover design. Participants performed an isometric mid-thigh pull (IMTP; peak and mean force; N), vertical jump (peak; cm) and six second sprint (peak and mean power; W) under each condition. Participants completed three efforts per exercise task interspersed with three-minute recoveries. Mean best values were analysed via a two-way mixed repeated measures ANOVA, and differences reported as effect sizes ± 95% confidence intervals, with accompanying descriptors and p values. Differences in peak IMTP values were unclear between familiarisation and experimental trials, and between menthol and control conditions. Mean IMTP force differed between familiarisation and control (0.51; −0.15 to 1.14; p = 0.001) and familiarisation and menthol conditions (0.50; −0.15 to 1.14; p = 0.002) by a small degree, but were unclear between control and menthol conditions. Unclear differences were also noted on vertical jump performance compared to familiarisation and between experimental conditions, with repeated six second peak and average power performance also showing unclear effects across all comparisons. We conclude that repeated menthol mouth swilling does not improve strength or power performance.


2012 ◽  
Vol 26 (3) ◽  
pp. 709-719 ◽  
Author(s):  
Frank R Noyes ◽  
Sue D Barber-Westin ◽  
Stephanie T Smith ◽  
Thomas Campbell ◽  
Tiina T Garrison

1995 ◽  
Vol 81 (2) ◽  
pp. 499-503 ◽  
Author(s):  
Steven P. Rider ◽  
Robert A. Hicks

Past research has identified a positive relationship between life-event stress and football injuries, but research in other sports has yielded more ambiguous results. It seems, then, that the relation of life stress and injury may be sport-specific and that different sports must be studied separately before such a relationship is assumed. The present investigation examined the relationships among life-event stress, coping skills, social support, and injuries of male and female high school basketball players. Contrary to the hypothesis, the number of days missed due to injury was not significantly related to life-event stress. As expected, the injury measure was negatively correlated with both the coping-skills and social-support variables, but these correlations did not reach statistical significance. Recommendations for research are discussed.


1983 ◽  
Vol 56 (3) ◽  
pp. 919-922 ◽  
Author(s):  
H. Thomas Ford ◽  
John R. Puckett ◽  
James P. Drummond ◽  
Kenneth Sawyer ◽  
Kyle Gantt ◽  
...  

To determine the effects of prescribed training programs on 5 physical fitness test items, each of 50 high school boys participated for 10 wk. in one of three programs (wrestling, softball, and plyometrics; weight training; and weight training and plyometrics). (a) On the sit-ups, 40-yd. dash, vertical jump, and pull-ups, each group improved significantly from pre-to posttest, (b) On the shuttle run, none of the groups improved significantly from pre- to posttest, (c) On the vertical jump, groups had a significant effect, but the interaction was nonsignificant. No effects were significant.


2021 ◽  
Vol 78 (1) ◽  
pp. 175-186
Author(s):  
Eduardo Sáez de Villarreal ◽  
Jose Galán Molina ◽  
Guillermo de Castro-Maqueda ◽  
José V. Gutiérrez-Manzanedo

Abstract The study aim was to compare the effects of a 7-week plyometric, strength and change of direction (COD) training program on basketball-specific performance measures in high-school players. Forty male players were randomly assigned to one of the four groups: plyometric (PG, n = 10), strength (SG, n = 10), COD (CODG, n = 10), and control group training (CG, n = 10). Two training sessions were performed at weekly intervals before basketball training. Performance of the counter movement jump (CMJ), Abalakov jump (ABKJ), 10 m zig-zag sprint, 20 m in line sprint (measurements at 10 and 20 m), and sit and reach flexibility test (SRFT) was assessed before and after the intervention. A 4 (group) × 2 (time) repeated measures analysis of variances (ANOVA) was conducted for each variable. Bonferroni post-hoc tests were used when the interaction was significant. Significant (all p < 0.05) time x group interaction was noted for SRFT, CMJ, ABK, sprint, and zig-zag 10 m, in favor of the experimental groups compared to the control group. However, improvements in physical fitness were similar between the three experimental groups. In conclusion, 7 weeks of specific plyometric, strength and COD training produced similar medium to large improvements in physical fitness of high-school basketball players.


2019 ◽  
Vol 14 (9) ◽  
pp. 1170-1177 ◽  
Author(s):  
Filip Sabol ◽  
Jozo Grgic ◽  
Pavle Mikulic

Purpose: To examine the acute effects of 3 doses of caffeine on upper- and lower-body ballistic exercise performance and to explore if habitual caffeine intake affects the acute effects of caffeine ingestion on ballistic exercise performance. Methods: Twenty recreationally active male participants completed medicine-ball-throw and vertical-jump tests under 4 experimental conditions (placebo and 2, 4, and 6 mg·kg−1 of caffeine). Results: One-way repeated-measures analysis of variance (ANOVA) with subsequent post hoc analyses indicated that performance in the medicine-ball-throw test improved, compared with placebo, only with a 6 mg·kg−1 dose of caffeine (P = .032). Effect size, calculated as the mean difference between the 2 measurements divided by the pooled SD, amounted to 0.29 (+3.7%). For the vertical-jump test, all 3 caffeine doses were effective (compared with placebo) for acute increases in performance (P values .022–.044, effect sizes 0.35–0.42, percentage changes +3.7% to +4.1%). A 2-way repeated-measures ANOVA indicated that there was no significant group × condition interaction effect, suggesting comparable responses between low (≤100 mg·d−1) and moderate to high (>100 mg·d−1) caffeine users to the experimental conditions. Conclusion: Caffeine doses of 2, 4, and 6 mg·kg−1 seem to be effective for acute enhancements in lower-body ballistic exercise performance in recreationally trained male individuals. For the upper-body ballistic exercise performance, only a caffeine dose of 6 mg·kg−1 seems to be effective. The acute effects of caffeine ingestion do not seem to be affected by habitual caffeine intake; however, this requires further exploration.


2009 ◽  
Vol 18 (4) ◽  
pp. 465-481 ◽  
Author(s):  
Tamara C. Valovich McLeod ◽  
Travis Armstrong ◽  
Mathew Miller ◽  
Jamie L. Sauers

Context:Poor balance has been associated with increased injury risk among athletes. Neuromuscular-training programs have been advocated as a means of injury prevention, but little is known about the benefits of these programs on balance in high school athletes.Objective:To determine whether there are balance gains after participation in a neuromuscular-training program in high school athletes.Design:Nonrandomized controlled trial.Setting:All data were collected at each participating high school before and after a 6-wk intervention or control period.Participants:62 female high school basketball players recruited from the local high school community and assigned to a training (n = 37) or control (n = 25) group.Intervention:Training-group subjects participated in a 6-wk neuromuscular-training program that included plyo- metric, functional-strengthening, balance, and stability-ball exercises.Main Outcome Measures:Data were collected for the Balance Error Scoring System (BESS) and Star Excursion Balance Test (SEBT) before and after the 6-wk intervention or control period.Results:The authors found a significant decrease in total BESS errors in the trained group at the posttest compared with their pretest and the control group (P = .003). Trained subjects also scored significantly fewer BESS errors on the single-foam and tandem-foam conditions at the posttest than the control group and demonstrated improvements on the single-foam compared with their pretest (P = .033). The authors found improvements in reach in the lateral, anteromedial, medial, and posterior directions in the trained group at the posttest compared with the control group (P < .05) using the SEBT.Conclusion:The study demonstrates that a neuromuscular-training program can increase the balance and proprioceptive capabilities of female high school basketball players and that clinical balance measures are sensitive to detect these differences.


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