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Specialty: Sports Medicine
Source: Journal of Strength and Conditioning Research
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Total 39 results found since Jan 2013.
Effect of an 11-Week In-Water Training Program With Increased Resistance on the Swimming Performance and the Basic Kinematic Characteristics of the Front Crawl Stroke
Gourgoulis, V, Valkoumas, I, Boli, A, Aggeloussis, N, and Antoniou, P. Effect of an 11-week in-water training program with increased resistance on the swimming performance and the basic kinematic characteristics of the front crawl stroke. J Strength Cond Res 33(1): 95–103, 2019—The purpose of the study was to assess the effect of an 11-week in-water training program with increased resistance on the swimming performance and the basic kinematic characteristics of the front crawl stroke in young female swimmers. Twelve swimmers were matched in pairs according to their best performance in 50-m front crawl swimming and then...
Source: Journal of Strength and Conditioning Research - December 19, 2018 Category: Sports Medicine Tags: Original Research Source Type: research
Validity of Bioelectric Impedance in Relation to Dual-Energy X-Ray Absorptiometry for Measuring Baseline and Change in Body Composition After an Exercise Program in Stroke
Vanzella, LM, Lawand, R, Shuaib, M, Oh, P, Corbett, D, and Marzolini, S. Validity of bioelectric impedance in relation to dual-energy x-ray absorptiometry for measuring baseline and change in body composition after an exercise program in stroke. J Strength Cond Res 36(12): 3273–3279, 2022—Exercise is an important strategy to improve fat-free mass (FFM) and reduce percent fat mass (FM%). However, no study has reported on a valid, cost-effective method to measure changes in body composition after stroke. The purpose of the study is to determine the level of agreement between bioelectrical impedance analysis (BIA) and dua...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research
Effect of Whole-Body Vibration on Neuromuscular Activation of Leg Muscles During Dynamic Exercises in Individuals With Stroke
This study examined the leg muscle activity during exposure to different whole-body vibration (WBV) intensities while performing various dynamic exercises in patients with chronic stroke. Thirty patients with chronic stroke performed a series of dynamic exercises under 3 conditions: (a) low-intensity WBV (peak acceleration: 0.96 units of gravity of Earth [g]), (b) high-intensity WBV (1.61 g), and (c) no WBV. Neuromuscular activation was recorded with surface electromyography (EMG) on bilateral biceps femoris (BF), vastus lateralis, tibialis anterior (TA), and gastrocnemius (GS) in both legs and was reported as EMGrms (root...
Source: Journal of Strength and Conditioning Research - June 23, 2017 Category: Sports Medicine Tags: Original Research Source Type: research
National Collegiate Athletic Association Strength and Conditioning Coaches' Knowledge and Practices Regarding Prevention and Recognition of Exertional Heat Stroke
Abstract: Valdes, AS, Hoffman, JR, Clark, MH, and Stout, JR. National collegiate athletic association strength and conditioning coaches' knowledge and practices regarding prevention and recognition of exertional heat stroke. J Strength Cond Res 28(11): 3013–3023, 2014—The purpose of this study was to assess and determine content knowledge of National Collegiate Athletic Association Strength and Conditioning Coaches (SCCs) regarding prevention and recognition of exertional heat stroke (EHS) and to determine whether the type of professional certification is an indicator of enhanced content knowledge. A questionnaire was ...
Source: Journal of Strength and Conditioning Research - November 1, 2014 Category: Sports Medicine Tags: Original Research Source Type: research
Electromyographic Analysis of the Surf Paddling Stroke Across Multiple Intensities
Nessler, JA, Ponce-Gonzalez, JG, Robles-Rodriguez, C, Furr, H, Warner, M, and Newcomer, SC. Electromyographic analysis of the surf paddling stroke across multiple intensities. J Strength Cond Res 33(4): 1102–1110, 2019—Surfers spend a majority of their time in the water paddling. The purpose of this study was to examine activity in 5 muscles that contribute to paddling at different velocities and to characterize oxygen use, paddling cadence, and surfboard motion at each velocity. Twelve recreational surfers completed an incremental paddling test on a short surfboard in a swim flume. Surface electromyography was recorde...
Source: Journal of Strength and Conditioning Research - March 29, 2019 Category: Sports Medicine Tags: Original Research Source Type: research
Tethered Swimming Can Be Used to Evaluate Force Contribution for Short-Distance Swimming Performance
Abstract: Morouço, PG, Marinho, DA, Keskinen, KL, Badillo, JJ, and Marques, MC. Tethered swimming can be used to evaluate force contribution for short-distance swimming performance. J Strength Cond Res 28(11): 3093–3099, 2014—The purpose of this study was two-fold: (a) to compare stroke and the physiological responses between maximal tethered and free front crawl swimming and (b) to evaluate the contribution of force exertion for swimming performance over short distances. A total of 34 male swimmers, representing various levels of competitive performance, participated in this study. Each participant was tested in both...
Source: Journal of Strength and Conditioning Research - November 1, 2014 Category: Sports Medicine Tags: Original Research Source Type: research
Physiological Responses of Young Tennis Players to Training Drills and Simulated Match Play
Abstract: Gomes, RV, Cunha, VCR, Zourdos, MC, Aoki, MS, Moreira, A, Fernandez-Fernandez, J, and Capitani, CD. Physiological responses of young tennis players to training drills and simulated match play. J Strength Cond Res 30(3): 851–858, 2016—The aim of this study was to investigate the responses of young tennis players during 5 different training drills and to compare the responses between drills. Ten (17.0 ± 1.2 years) male tennis players participated in this study. Each athlete completed 5 total training drills. Drills 1–4 consisted of each player returning balls from a ball-serving machine and were stroke/time-...
Source: Journal of Strength and Conditioning Research - February 24, 2016 Category: Sports Medicine Tags: Original Research Source Type: research
Pacing During 200-m Competitive Masters Swimming
This study aimed to examine masters athletes pacing strategies categorized by stroke, gender, age, and performance level. Data were retrieved from World and European masters swimming championships and contained data for 4,272 performances. Performances were coded for stroke, gender, age, and performance classification (PC). Performance classification was based on comparison to the appropriate masters world record. Performances were then normalized, with split times being expressed as a percentage faster or slower than average 50-m split time to determine relative pace. Coefficient of variation (CV) of 50-m time was examine...
Source: Journal of Strength and Conditioning Research - June 25, 2020 Category: Sports Medicine Tags: Original Research Source Type: research
Effects of Time of Day on Race Splits, Kinematics, and Blood Lactate During a 50-m Front Crawl Performance
This study aimed to investigate the performance, race splits, metabolic, and stroke parameters during 2 successive 50-m front crawl under conditions simulating a competition. Eleven competitive male swimmers (20 ± 3 years, 182 ± 5 cm, and 77 ± 5 kg) performed 2 successive 50-m front crawl trials in a 50-m swimming pool at 10 am and 5 pm. Block time (tB), 15-m performance (t.15-m), and 50-m performance (t.50-m) were measured. Velocity (V), stroke rate (SR), stroke length (SL), and stroke index (SI) were measured at 3 time points during the trials. Pre-trial and post-trial blood samples were taken to determine blood lacta...
Source: Journal of Strength and Conditioning Research - February 26, 2021 Category: Sports Medicine Tags: Original Research Source Type: research
The Power Output and Sprinting Performance of Young Swimmers
Abstract: Barbosa, TM, Morais, JE, Marques, MC, Costa, MJ, and Marinho, DA. The power output and sprinting performance of young swimmers. J Strength Cond Res 29(2): 440–450, 2015—The aim of this article was to compare swimming power output between boys and girls and to model the relationship between swimming power output and sprinting performance in young swimmers. One hundred young swimmers (49 boys and 51 girls, aged between 11 and 13 years) underwent a test battery including anthropometrics (body mass, height, arm span [AS], and trunk transverse surface area), kinematic and efficiency (velocity, stroke frequency, st...
Source: Journal of Strength and Conditioning Research - February 1, 2015 Category: Sports Medicine Tags: Original Research Source Type: research
Effect of Gender, Energetics, and Biomechanics on Swimming Masters Performance
Abstract: Ferreira, MI, Barbosa, TM, Neiva, HP, Marta, CC, Costa, MJ, and Marinho, DA. Effect of gender, energetics, and biomechanics on swimming masters performance. J Strength Cond Res 29(7): 1948–1955, 2015—The purpose of this study was to
analyze the effect of gender and energetics on biomechanics and performance of masters swimmers over 1 season. Twenty-five masters swimmers (14 male and 11 female) were assessed 3 times (TP1, TP2, and TP3) during a season (male personal record in 200-m freestyle event: 173.00 ± 31.41 seconds: female personal record in 200-m freestyle event: 200.73 ± 25.02 seconds). An incrementa...
Source: Journal of Strength and Conditioning Research - June 30, 2015 Category: Sports Medicine Tags: Original Research Source Type: research
The Relationship Between Propulsive Force in Tethered Swimming and 200-m Front Crawl Performance
Abstract: Santos, KB, Bento, PCB, Pereira, G, and Rodacki, ALF. The relationship between propulsive force in tethered swimming and 200-m front crawl performance. J Strength Cond Res 30(9): 2500–2507, 2016—The aims of this study were to determine whether propulsive force (peak force, mean force, impulse, and rate of force development) and stroke rate change during 2 minutes of front crawl tethered swimming and to correlate them with the stroke rate and swimming velocity in 200-m front crawl swimming. Twenty-one swimmers (21.6 ± 4.8 years, 1.78 ± 0.06 m, 71.7 ± 8.1 kg), with 200-m front crawl swimming performance equi...
Source: Journal of Strength and Conditioning Research - August 26, 2016 Category: Sports Medicine Tags: Original Research Source Type: research
Warm-up for Sprint Swimming: Race-Pace or Aerobic Stimulation? A Randomized Study
Abstract: Neiva, HP, Marques, MC, Barbosa, TM, Izquierdo, M, Viana, JL, Teixeira, AM, and Marinho, DA. Warm-up for sprint swimming: race-pace or aerobic stimulation? A randomized study. J Strength Cond Res 31(9): 2423–2431, 2017—The aim of this study was to compare the effects of 2 different warm-up intensities on 100-m swimming performance in a randomized controlled trial. Thirteen competitive swimmers performed two 100-m freestyle time-trials on separate days after either control or experimental warm-up in a randomized design. The control warm-up included a typical race-pace set (4 × 25 m), whereas the experimental ...
Source: Journal of Strength and Conditioning Research - August 26, 2017 Category: Sports Medicine Tags: Original Research Source Type: research
Strength, Power, and Muscular Endurance Exercise and Elite Rowing Ergometer Performance
Abstract: Lawton, TW, Cronin, JB, and McGuigan, MR. Strength, power, and muscular endurance exercise and elite rowing ergometer performance. J Strength Cond Res 27(7): 1928–1935, 2013—Knowledge of the relationship between weight room exercises and various rowing performance measures is limited; this information would prove useful for sport-specific assessment of individual needs and exercise prescription. The purpose of this study was to establish strength, power, and muscular endurance exercises for weight room training, which are strong determinants of success in specific performance measures used to assess elite row...
Source: Journal of Strength and Conditioning Research - June 25, 2013 Category: Sports Medicine Tags: Original Research Source Type: research
Comparison of Incremental Intermittent and Time Trial Testing in Age-Group Swimmers
Zacca, R, Azevedo, R, Peterson Silveira, R, Vilas-Boas, JP, Pyne, DB, Castro, FAdS, and Fernandes, RJ. Comparison of incremental intermittent and time trial testing in age-group swimmers. J Strength Cond Res 33(3): 801–810, 2019—The aim of this study was to compare physiological and biomechanical characteristics between an incremental intermittent test and a time trial protocol in age-group swimmers. Eleven national level age-group swimmers (6 men and 5 women) performed a 7 × 200-m incremental intermittent protocol (until exhaustion; 30-second rest) and a 400-m test (T400) in front crawl on separate days. Cardiorespir...
Source: Journal of Strength and Conditioning Research - February 21, 2019 Category: Sports Medicine Tags: Original Research Source Type: research
