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Gaballah A, Abdalaziz A, Elgeidi A, Shkrah N, Bressel E. Platelet-rich Plasma Injections For Accelerating Treatment Of Hamstring Tear Injuries. Med Sci Sports Exerc 2017. [DOI: 10.1249/01.mss.0000519600.27644.0d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Dolny D, Louder T, Bressel E. Biomechanical Comparison Of Countermovement Jumps On Land And In Water. Med Sci Sports Exerc 2017. [DOI: 10.1249/01.mss.0000518998.39960.bc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Alirezaei Noghondar F, Bressel E. Effect of shoe insole density on impact characteristics and performance during a jump-landing task. FOOTWEAR SCIENCE 2017. [DOI: 10.1080/19424280.2017.1305003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Cronin JB, Sharp AP, Stronach B, Deuchrass R, Bressel E, Shackel DF, McMaster DT. Strength and Conditioning for Throwing in Cricket. Strength Cond J 2016. [DOI: 10.1519/ssc.0000000000000254] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Bressel E, Louder TJ, Hoover JP, Roberts LC, Dolny DG. Acute and chronic effects of aquatic treadmill training on land treadmill running kinematics: A cross-over and single-subject design approach. J Sports Sci 2016; 35:2105-2113. [PMID: 27852157 DOI: 10.1080/02640414.2016.1256493] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The aim of this study was to determine if selected kinematic measures (foot strike index [SI], knee contact angle and overstride angle) were different between aquatic treadmill (ATM) and land treadmill (LTM) running, and to determine if these measures were altered during LTM running as a result of 6 weeks of ATM training. Acute effects were tested using 15 competitive distance runners who completed 1 session of running on each treadmill type at 5 different running speeds. Subsequently, three recreational runners completed 6 weeks of ATM training following a single-subject baseline, intervention and withdrawal experiment. Kinematic measures were quantified from digitisation of video. Regardless of speed, SI values during ATM running (61.3 ± 17%) were significantly greater (P = 0.002) than LTM running (42.7 ± 23%). Training on the ATM did not change (pre/post) the SI (26 ± 3.2/27 ± 3.1), knee contact angle (165 ± 0.3/164 ± 0.8) or overstride angle (89 ± 0.4/89 ± 0.1) during LTM running. Although SI values were different between acute ATM and LTM running, 6 weeks of ATM training did not appear to alter LTM running kinematics as evidenced by no change in kinematic values from baseline to post intervention assessments.
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Searle C, Louder T, Dolny D, Bressel E. Jump Landings On Land And In Waist-Deep Water. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000487475.35469.27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Dolny D, Louder T, Roberts L, Hoover J, Clark N, Bressel E. Aquatic Treadmill Running Does Not Alter Select Land Treadmill Running Kinematics After Six-Weeks of Training. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000488241.40882.81] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bressel E, Louder T, Dolny D, Foster S. Effect Of Water Immersion On Dual Task Performance In Older Adults. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000487473.50716.49] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Patterson D, Louder T, Nardoni CR, Clark NIW, Bressel E, Dolny D. Comparison Of Propulsive Power During Loaded Countermovement Jumps Performed In Water Versus Land In Males. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000487825.07150.fd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Louder T, Clark N, Bressel E, Dolny D. The Relative Effect of an Aquatic Environment on Jumping Kinetics between Older and Younger Adults. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000487474.27845.84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Louder TJ, Searle CJ, Bressel E. Mechanical parameters and flight phase characteristics in aquatic plyometric jumping. Sports Biomech 2016; 15:342-56. [PMID: 27125295 DOI: 10.1080/14763141.2016.1162840] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Plyometric jumping is a commonly prescribed method of training focused on the development of reactive strength and high-velocity concentric power. Literature suggests that aquatic plyometric training may be a low-impact, effective supplement to land-based training. The purpose of the present study was to quantify acute, biomechanical characteristics of the take-off and flight phase for plyometric movements performed in the water. Kinetic force platform data from 12 young, male adults were collected for counter-movement jumps performed on land and in water at two different immersion depths. The specificity of jumps between environmental conditions was assessed using kinetic measures, temporal characteristics, and an assessment of the statistical relationship between take-off velocity and time in the air. Greater peak mechanical power was observed for jumps performed in the water, and was influenced by immersion depth. Additionally, the data suggest that, in the water, the statistical relationship between take-off velocity and time in air is quadratic. Results highlight the potential application of aquatic plyometric training as a cross-training tool for improving mechanical power and suggest that water immersion depth and fluid drag play key roles in the specificity of the take-off phase for jumping movements performed in the water.
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Bressel E, Louder TJ, Dolny DG. Age-Related Changes in Postural Sway Are Not Consistent Between Land and Aquatic Environments. J Geriatr Phys Ther 2016; 40:113-120. [PMID: 26881948 DOI: 10.1519/jpt.0000000000000081] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND PURPOSE Quantifying how the environment (land vs water) influences age-related changes in postural sway is important for the development of new therapies that improve balance. The authors are not aware of any previous studies that have compared postural sway in an aquatic environment between age groups or when water depth and/or perturbations are incorporated into the comparison. The purpose of this study was to compare the effect of water depth and jet intensity on postural sway in older and younger adults. METHODS Sixteen older (age = 62.8 ± 9.56 years) and 15 younger (age = 22.5 ± 1.85 years) adults participated. Participants stood quietly for 90 seconds on land and at various water depths and jet intensities while center of pressure (CoP) sway was recorded using a force platform. RESULTS Statistical comparisons revealed that CoP range and area measurements were different between land and aquatic conditions (P = .04 - .001). For example, CoP sway area in chest deep water (8.51 ± 2.97 cm) was greater than on land (2.41 ± 1.37 cm; effect size = 2.05). Furthermore, CoP sway area at the 60% jet intensity (71.4 ± 31.2 cm) was substantially greater than at the 20% jet intensity (12.4 ± 6.23 cm; effect size = 1.89). Surprisingly, the proportion of change across water depths and jet intensities was not consistent between older and younger groups as indicated by significant age by environment interactions (P = .03 - .001). Follow-up tests indicated that older adults swayed less than younger adults in water at the level of the hip (effect sizes = 0.42-0.94) and when water jets were applied at a 60% jet intensity (effect sizes = 0.63-1.97). CONCLUSIONS Water immersion to the chest with high jet intensities produces the greatest CoP sway in both groups. This is likely a result of buoyancy and perturbation intensity. Less sway in the older group may reflect a strategy that reduces degrees of freedom for this group when faced with these stability challenges.
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Louder T, Bressel M, Bressel E. The Kinetic Specificity of Plyometric Training: Verbal Cues Revisited. J Hum Kinet 2015; 49:201-8. [PMID: 26839620 PMCID: PMC4723169 DOI: 10.1515/hukin-2015-0122] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/01/2015] [Indexed: 11/24/2022] Open
Abstract
Plyometric training is a popular method utilized by strength and conditioning professionals to improve aspects of functional strength. The purpose of this study was to explore the influence of extrinsic verbal cueing on the specificity of jumping movements. Thirteen participants (age: 23.4 ± 1.9 yr, body height: 170.3 ± 15.1 cm, body mass: 70.3 ± 23.8 kg,) performed four types of jumps: a depth jump “as quickly as possible” (DJT), a depth jump “as high as possible” (DJH), a countermovement jump (CMJ), and a squat jump (SJ). Dependent measures, which included measurement of strength and power, were acquired using a force platform. From the results, differences in body-weight normalized peak force (BW) (DJH: 4.3, DJT: 5.6, CMJ: 2.5, SJ: 2.2), time in upward propulsion (s) (DJH: 0.34, DJT: 0.20, CMJ: 0.40, SJ: 0.51), and mean acceleration (m·s-2) (DJH: 26.7, DJT: 36.2, CMJ: 19.8, SJ: 17.3) were observed across all comparisons (p = 0.001 – 0.033). Differences in the body-weight normalized propulsive impulse (BW·s) (DJH: 0.55, DJT: 0.52, CMJ: 0.39, SJ: 0.39) and propulsive power (kW) (DJH: 13.7, DJT: 16.5, CMJ: 11.5, SJ: 12.1) were observed across all comparisons (p = 0.001 – 0.050) except between the CMJ and SJ (p = 0.128 – 0.929). The results highlight key kinetic differences influencing the specificity of plyometric movements and suggest that verbal cues may be used to emphasize the development of reactive strength (e.g. DJT) or high-velocity concentric power (e.g. DJH).
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Louder T, Searle C, Bressel E. Aquatic Plyometric Training. Med Sci Sports Exerc 2015. [DOI: 10.1249/01.mss.0000477391.48717.5e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Schaefer SY, Louder TJ, Foster S, Bressel E. Effect of Water Immersion on Dual-task Performance: Implications for Aquatic Therapy. PHYSIOTHERAPY RESEARCH INTERNATIONAL 2015; 21:147-54. [DOI: 10.1002/pri.1628] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 12/17/2014] [Accepted: 02/25/2015] [Indexed: 01/12/2023]
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Miller AI, Heath EM, Dickinson JM, Bressel E. Relationship Between Muscle Fiber Type and Reactive Balance: A Preliminary Study. J Mot Behav 2015; 47:497-502. [DOI: 10.1080/00222895.2015.1015676] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Bressel E, Wing JE, Miller AI, Dolny DG. High-Intensity Interval Training on an Aquatic Treadmill in Adults With Osteoarthritis. J Strength Cond Res 2014; 28:2088-96. [DOI: 10.1519/jsc.0000000000000258] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Richardson J, Bressel E, Wagner D, Studenka B, Dolny D. Effect Of Step Rate On Foot Strike Pattern And Running Economy In Novice Runners. Med Sci Sports Exerc 2014. [DOI: 10.1249/01.mss.0000495665.26839.f2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Roper JA, Bressel E, Tillman MD. Acute Aquatic Treadmill Exercise Improves Gait and Pain in People With Knee Osteoarthritis. Arch Phys Med Rehabil 2013; 94:419-25. [DOI: 10.1016/j.apmr.2012.10.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Revised: 10/04/2012] [Accepted: 10/13/2012] [Indexed: 11/26/2022]
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Requena B, Garcia I, Requena F, Bressel E, Saez-Saez de Villarreal E, Cronin J. Association between traditional standing vertical jumps and a soccer-specific vertical jump. Eur J Sport Sci 2012; 14 Suppl 1:S398-405. [DOI: 10.1080/17461391.2012.708790] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Denning WM, Bressel E, Dolny D, Bressel M, Seeley MK. A Review of Biophysical Differences between Aquatic and Land-Based Exercise. ACTA ACUST UNITED AC 2012. [DOI: 10.25035/ijare.06.01.07] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sobolewski EJ, Wagner DR, Bressel E. Effect of static stretching and jogging on knee extension isokinetic peak torque. ISOKINET EXERC SCI 2011. [DOI: 10.3233/ies-2011-0409] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Bressel E, Gibbons M, Samaha AL. Effect of Whole Body Vibration on Stereotypy of Young Children with Autism. Med Sci Sports Exerc 2011. [DOI: 10.1249/01.mss.0000402274.59742.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Roper J, Tillman MD, Bressel E. Aquatic Treadmill Exercise Improves Gait Mechanics and Mobility for Individuals with Unilateral Knee Osteoarthritis. Med Sci Sports Exerc 2011. [DOI: 10.1249/01.mss.0000401914.98164.b2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Vandenberg C, Bressel E, Dolny D. Trunk Muscle Recruitment is Reduced When Exercising In An Aquatic Environment. Med Sci Sports Exerc 2011. [DOI: 10.1249/01.mss.0000400996.05385.e0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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