Journal of Strength and Conditioning Research This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Effects of Nitrate Supplementation on Muscle Strength and Mass: A Systematic Review
Anderson, OK, Martinez-Ferran, M, Lorenzo-Calvo, J, Jiménez, SL, and Pareja-Galeano, H. Effects of nitrate supplementation on muscle strength and mass: a systematic review. J Strength Cond Res 36(12): 3562–3570, 2022—This systematic review examines the effect of dietary nitrate supplementation (SUP) on muscle strength and hypertrophy when combined with physical exercise. The databases PubMed, Web of Science, and MEDLINE were searched for full-text articles published between January 2000 and June 2020. For inclusion, studies had to report on the effects of SUP administered as acute or chronic doses together with a stan...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Brief Review Source Type: research

Military Body Composition Standards and Physical Performance: Historical Perspectives and Future Directions
Harty, PS, Friedl, KE, Nindl, BC, Harry, JR, Vellers, HL, and Tinsley, GM. Military body composition standards and physical performance: historical perspectives and future directions. J Strength Cond Res 36(12): 3551–3561, 2022—US military physique and body composition standards have been formally used for more than 100 years. These metrics promote appropriate physical fitness, trim appearance, and long-term health habits in soldiers, although many specific aspects of these standards have evolved as evidence-based changes have emerged. Body composition variables have been shown to be related to many physical performanc...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Brief Review Source Type: research

Aerobic Training With Blood Flow Restriction for Endurance Athletes: Potential Benefits and Considerations of Implementation
The objective of this narrative review is to discuss the acute and chronic aspects of aerobic BFR exercise for well-trained endurance athletes and highlight considerations for its effective implementation. This review first highlights key physiological capacities of endurance performance. The acute and chronic responses to aerobic BFR exercise and their impact on performance are then discussed. Finally, considerations for prescribing and monitoring aerobic BFR exercise in trained endurance populations are addressed to challenge current views on how BFR exercise is implemented. (Source: Journal of Strength and Conditioning Research)
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Brief Review Source Type: research

Neuromuscular Electrical Stimulation Training vs. Conventional Strength Training: A Systematic Review and Meta-Analysis of the Effect on Strength Development
Happ, KA, and Behringer, M. Neuromuscular electrical stimulation Training vs. conventional strength training: a systematic review and meta-analysis of the effect on strength development. J Strength Cond Res 36(12): 3527–3540, 2022—A systematic review of the current state of literature and a meta-analysis were conducted to compare the strength development between neuromuscular electrical stimulation (NMES) and conventional strength training when training volume is matched. Searches of PubMed and several other databases were conducted for studies that met the following primary inclusion criteria: randomized studies of>20...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Brief Review Source Type: research

Percentage-Based Change of Direction Deficit: A New Approach to Standardize Time- and Velocity-Derived Calculations
Freitas, TT, Pereira, LA, Alcaraz, PE, Azevedo, PHSM, Bishop, C, and Loturco, I. Percentage-based change of direction deficit: a new approach to standardize time- and velocity-derived calculations. J Strength Cond Res 36(12): 3521–3526, 2022—Change of direction (COD) efforts are crucial in team sports, and an extensive body of research has been devoted to investigating this complex and multifaceted skill. Most studies have assessed players' ability to change direction by reporting completion time or average velocity in different COD tasks. However, it has been argued that these variables may not accurately portray an a...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Technical Report Source Type: research

What Does It Take to Complete the Cape Epic?
This study aimed to describe the racing and training demands of the Cape Epic. Six male mountain bike riders (age: 39 ± 7 years, height: 181 ± 3 cm, and body mass: 78.7 ± 8.1 kg) trained for 4.5 months and took part in the Cape Epic. Training and racing data (prologue, stage 1, and 2) were analyzed, and riders were tested in the laboratory on 3 distinct occasions for maximal oxygen uptake (V̇O2max), maximal work rate (Ẇmax), and power output associated with the respiratory compensation point (RCPPO). Statistical significance was set at p ≤ 0.05. With race durations of 1.5 ± 0.2, 6.5 ± 1.2, and 6.4 ± 1.4 hours fo...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Comprehensive Physical Activity Assessment During U.S. Army Basic Combat Training
Alemany, JA, Pierce, JR, Bornstein, DB, Grier, TL, Jones, BH, and Glover, SH. Comprehensive physical activity assessment during U.S. Army Basic Combat Training. J Strength Cond Res 36(12): 3505–3512, 2022—Physical activity (PA) volume, intensity, and qualitative contextual information regarding activity type and loads carried are limited during U.S. Army Basic Combat Training (BCT). The purpose of this study was to characterize daily (05:00–20:00 hours) PA during BCT using a comprehensive approach. During 2 10-week BCT cycles (n = 40 trainees per cycle), pedometers, accelerometers, and direct observation were used to...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Ankle Proprioception in Male and Female Surfers and the Implications of Motor Experience and Lower-Body Strength
Dowse, RA, Secomb, JL, Bruton, M, Parsonage, J, Ferrier, B, Waddington, G, and Nimphius, S. Ankle proprioception in male and female surfers and the implications of motor experience and lower-body strength. J Strength Cond Res 36(12): 3497–3504, 2022—The primary objectives were to evaluate if the active movement extent discrimination apparatus (AMEDA) condition (i.e., front foot and back foot plantarflexion, dorsiflexion, inversion, and eversion) and the level of competition explained ankle movement discrimination scores and, thereafter, examined the contribution of surf experience, physical capacity, and ability to pro...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Is Functional Overreaching or Acute Fatigue the Key to the Effects of Concentrated Block Training in Running?
This study examined the effects of 5 consecutive days of high- and moderate-intensity training on performance and physiological measures in moderately trained individuals. The relationship of the training organization with the state of overreaching and acute fatigue was investigated. Twenty-four male soldiers (age, 19.3 ± 0.4 years; V̇o2peak, 58.7 ± 3.8 ml·kg−1·min−1) were assigned to 2 training groups for 5 consecutive days of either high- or moderate-intensity training. The subjects underwent incremental and 12-minute time trial tests before, immediately after, 1 and 2 weeks after training. The high- and moderat...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Acute Inflammatory, Anthropometric, and Perceptual (Muscle Soreness) Effects of Postresistance Exercise Water Immersion in Junior International and Subelite Male Volleyball Athletes
This study investigated the acute effects of postexercise water immersion after resistance exercise. Eighteen elite and subelite male volleyball athletes participated in an intervention using a randomized cross-over design. On separate occasions after resistance exercise, subjects completed 1 of 4 15-minute interventions: control (CON), cold water immersion (CWI), contrast water therapy (CWT), or hot water immersion (HWI). Significance was accepted at p ≤ 0.05. Resistance exercise induced significant temporal changes (time effect) for inflammatory, anthropometric, perceptual, and performance measures. Serum creatine kina...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Validation of the Polar Team Pro System for Sprint Speed With Ice Hockey Players
Conners, RT, Whitehead, PN, Dodds, FT, Schott, KD, and Quick, MC. Validation of the polar team pro system for sprint speed with ice hockey players. J Strength Cond Res 36(12): 3468–3472, 2022—Commercially available player tracking sensors such as the Polar Team Pro system (PTPS) have been used to monitor athlete performance. Use during ice hockey practices and games has resulted in seemingly plausible and valid values for internal metrics (heart rate); however, external metrics (distance, speed, and acceleration) seem sporadic and counterintuitive. To determine the validity of the PTPS for measuring sprint speed with c...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Neuropsychological Study on the Effects of Boxing Upon Athletes' Memory
This study attempts to explore the impairment of athletes' memory caused by 1 year of boxing training according to the n-back test and Chinese auditory learning test (CALT). Accordingly, 58 new athletes were prospectively analyzed from a sports school, where 28 athletes who received boxing training were regarded as the exposed group and 30 athletes who received matched training were taken as unexposed group for a duration of 1 year. All subjects respectively completed an n-back test (to test working memory) and a CALT test (to test short-term memory and long-term memory) before and after the training. During the tests, acc...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Stretching Practices of International Powerlifting Federation Unequipped Powerlifters
Spence, A-J, Helms, ER, and McGuigan, MR. Stretching practices of International Powerlifting Federation unequipped powerlifters. J Strength Cond Res 36(12): 3456–3461, 2022—Stretching practices in powerlifters. The purpose of this study was to provide insight into the stretching practices of competitive powerlifters. Powerlifters (n = 319) from 51 countries completed a self-reported online survey on stretching practices. Subjects had (mean ± SD, median, and interquartile range) 7.7 ± 6.1, 6, and 6 years of general resisting training, 4.4 ± 4.5, 3, and 3 years of strength specific training, and been competing in powe...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Long-Term Monitoring of Training Load, Force-Velocity Profile, and Performance in Elite Weightlifters: A Case Series With Two Male Olympic Athletes
Sandau, I and Granacher, U. Long-term monitoring of training load, force-velocity profile, and performance in elite weightlifters: a case series with two male Olympic athletes. J Strength Cond Res 36(12): 3446–3455, 2022—The aim of this case series approach was to analyze weekly changes in force-velocity relationship (FvR) parameters (v̅0, F̅0, P̅max) and theoretical snatch performance (snatchth) assessed through a specific snatch pull test in preparation of the European and World Championships in 2 male elite weightlifters. A second aim was to examine associations of training load (volume, volume load, average load...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research

Maturation Stage Does Not Affect Change of Direction Asymmetries in Young Soccer Players
This study examined whether the stage of biological maturation can affect interlimb asymmetries during a change of direction (COD) test. Seventy-six young soccer players were divided into 2 different groups according to their peak height velocity stage (PHV): pre-PHV (n = 45, age = 11.8 ± 1.2 years, height = 149.8 ± 9.3 cm, body mass = 43.9 ± 11.2 kg) and post-PHV (n = 31, age = 14.4 ± 0.9 years, height = 170.0 ± 4.9 cm, body mass = 61.5 ± 8.9 kg). Subjects performed a 505 test to measure the completion time in both directions and a 20-m maximum sprint test. Change of direction deficit (CODD) was used as a measure fo...
Source: Journal of Strength and Conditioning Research - November 26, 2022 Category: Sports Medicine Tags: Original Research Source Type: research