Pub Date : 2021-12-23DOI: 10.1519/SSC.0000000000000694
Trey D.W. Job, Jonathan Neville, Micheál J. Cahill, Frank A. Bourgeois, Ryan L. Crotin, J. Cronin
ABSTRACT Throwing velocity is a crucial component to success in baseball athletes, especially at the position of pitcher. Through practice and proper instruction, pitchers can refine their pitching mechanics to maximize efficiency and throwing velocity in tandem with improving injury resistance. Non-specific training such as gym-based resistance training has been used concurrently with baseball skills training to enhance athletic abilities, including throwing velocity. Increases in throwing velocity have been observed while training with lighter (greater than 12 repetition maximum [RM]) and heavier (3–12 RM) loads. Specific training such as variably weighted baseballs has also been utilized to facilitate increases in throwing velocity. Throwing velocity has also been successfully increased using balls overweight and underweight than the standard five-ounce baseball. More clarity is needed regarding necessary strength levels, range of motion, and progressions in ball mass or throwing volume when applying this training mode. Training methods to increase throwing velocity in baseball athletes should include resistance training with a variety of loads and throwing variably weighted baseballs within the athlete's capability.
{"title":"Training Methods to Increase Throwing Velocity in Baseball Athletes: A Brief Review","authors":"Trey D.W. Job, Jonathan Neville, Micheál J. Cahill, Frank A. Bourgeois, Ryan L. Crotin, J. Cronin","doi":"10.1519/SSC.0000000000000694","DOIUrl":"https://doi.org/10.1519/SSC.0000000000000694","url":null,"abstract":"ABSTRACT Throwing velocity is a crucial component to success in baseball athletes, especially at the position of pitcher. Through practice and proper instruction, pitchers can refine their pitching mechanics to maximize efficiency and throwing velocity in tandem with improving injury resistance. Non-specific training such as gym-based resistance training has been used concurrently with baseball skills training to enhance athletic abilities, including throwing velocity. Increases in throwing velocity have been observed while training with lighter (greater than 12 repetition maximum [RM]) and heavier (3–12 RM) loads. Specific training such as variably weighted baseballs has also been utilized to facilitate increases in throwing velocity. Throwing velocity has also been successfully increased using balls overweight and underweight than the standard five-ounce baseball. More clarity is needed regarding necessary strength levels, range of motion, and progressions in ball mass or throwing volume when applying this training mode. Training methods to increase throwing velocity in baseball athletes should include resistance training with a variety of loads and throwing variably weighted baseballs within the athlete's capability.","PeriodicalId":21993,"journal":{"name":"Strength and Conditioning Journal","volume":" ","pages":"1 - 9"},"PeriodicalIF":2.5,"publicationDate":"2021-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49174303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-09DOI: 10.1519/SSC.0000000000000700
Tsuyoshi Nagatani, G. G. Haff, Stuart N. Guppy, K. Kendall
ABSTRACT Altering set configurations during a resistance training program can provide a novel training variation that can be used to modify the external and internal training loads that induce specific training outcomes. To design training programs that better target the defined goal(s) of a specific training phase, strength and conditioning professionals need to better understand how different set configurations affect the training adaptations that result from resistance training. Traditional and cluster set structures are commonly implemented by strength and conditioning professionals as part of an athlete's resistance training program. The purpose of this review is to offer examples of the practical implementation of traditional and cluster sets that can be integrated into a periodized resistance training program.
{"title":"Practical Application of Traditional and Cluster Set Configurations Within a Resistance Training Program","authors":"Tsuyoshi Nagatani, G. G. Haff, Stuart N. Guppy, K. Kendall","doi":"10.1519/SSC.0000000000000700","DOIUrl":"https://doi.org/10.1519/SSC.0000000000000700","url":null,"abstract":"ABSTRACT Altering set configurations during a resistance training program can provide a novel training variation that can be used to modify the external and internal training loads that induce specific training outcomes. To design training programs that better target the defined goal(s) of a specific training phase, strength and conditioning professionals need to better understand how different set configurations affect the training adaptations that result from resistance training. Traditional and cluster set structures are commonly implemented by strength and conditioning professionals as part of an athlete's resistance training program. The purpose of this review is to offer examples of the practical implementation of traditional and cluster sets that can be integrated into a periodized resistance training program.","PeriodicalId":21993,"journal":{"name":"Strength and Conditioning Journal","volume":"44 1","pages":"87 - 101"},"PeriodicalIF":2.5,"publicationDate":"2021-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42206956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-17DOI: 10.1519/SSC.0000000000000695
Adrián Moreno-Villanueva, J. Pino-Ortega, Markel Rico-González
ABSTRACT The aim of this systematic review was (a) to identify the articles that have differentiated muscle action duration (MAD) in the eccentric (ECC) and concentric (CON) muscle action regimen during resistance training (RT) programs and (b) to analyze how MAD affects strength, power, and muscle hypertrophy adaptations. Twenty-four studies were included from 3 electronic databases. The results showed that the RT protocols with medium ECC MAD and fast CON MAD, specifically cadences 2–4/0/1/0, produced the highest improvement values for the development of maximum dynamic strength, both in trained (18–24%) and untrained subjects (10–14%). For the development of maximum power, a medium total repetition MAD of less than 4 seconds and slow total repetition MAD, less than 8 seconds, seems suitable for untrained and trained subjects, respectively, with the condition that CON MAD is explosive or fast (cadence 4–8/0/max-3/0). Finally, muscle hypertrophy could be improved with a total repetition MAD less than 8 seconds in both trained and untrained subjects. The optimal timing of each muscle action to maximize hypertrophic training results is still not entirely clear. In conclusion, the prescription of the MAD, total and phase specific, should be planned according to the adaptations desired in untrained and trained individuals.
{"title":"Effect of Repetition Duration—Total and in Different Muscle Actions—On the Development of Strength, Power, and Muscle Hypertrophy: A Systematic Review","authors":"Adrián Moreno-Villanueva, J. Pino-Ortega, Markel Rico-González","doi":"10.1519/SSC.0000000000000695","DOIUrl":"https://doi.org/10.1519/SSC.0000000000000695","url":null,"abstract":"ABSTRACT The aim of this systematic review was (a) to identify the articles that have differentiated muscle action duration (MAD) in the eccentric (ECC) and concentric (CON) muscle action regimen during resistance training (RT) programs and (b) to analyze how MAD affects strength, power, and muscle hypertrophy adaptations. Twenty-four studies were included from 3 electronic databases. The results showed that the RT protocols with medium ECC MAD and fast CON MAD, specifically cadences 2–4/0/1/0, produced the highest improvement values for the development of maximum dynamic strength, both in trained (18–24%) and untrained subjects (10–14%). For the development of maximum power, a medium total repetition MAD of less than 4 seconds and slow total repetition MAD, less than 8 seconds, seems suitable for untrained and trained subjects, respectively, with the condition that CON MAD is explosive or fast (cadence 4–8/0/max-3/0). Finally, muscle hypertrophy could be improved with a total repetition MAD less than 8 seconds in both trained and untrained subjects. The optimal timing of each muscle action to maximize hypertrophic training results is still not entirely clear. In conclusion, the prescription of the MAD, total and phase specific, should be planned according to the adaptations desired in untrained and trained individuals.","PeriodicalId":21993,"journal":{"name":"Strength and Conditioning Journal","volume":"44 1","pages":"39 - 56"},"PeriodicalIF":2.5,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42777291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-16DOI: 10.1519/SSC.0000000000000688
Marcelo Corso, Tiago C. de Figueiredo, Danilo Carvalho, A. Brown, B. F. de Salles, R. Simão, J. Willardson, Ingrid Dias
ABSTRACT Strength training (ST) has been studied for acute and chronic effects on blood pressure (BP) and heart rate variability (HRV). These effects have never been reviewed collectively concerning the variables that comprise a ST program. Therefore, this review aims to examine the manipulation of ST variables (i.e., load intensity, number of sets and repetitions, exercise order, and rest interval length) on BP and HRV after a session and a long-term program. The BP reduced significantly after an ST session independently of the load intensity, the number of sets and repetitions, the rest interval length, the mode, and the participant characteristic (healthy patients or patients with chronic disease). However, a high number of sets and repetitions, prioritizing multijoint exercises, with longer rest interval lengths between sets and exercises may potentiate these effects. In the HRV analyses, most of the trials showed a sympathetic predominance after an ST session. Hence, it is reasonable to confirm that central adjustments are responsible to control hemodynamics after an ST session.
{"title":"Effects of Strength Training on Blood Pressure and Heart Rate Variability—A Systematic Review","authors":"Marcelo Corso, Tiago C. de Figueiredo, Danilo Carvalho, A. Brown, B. F. de Salles, R. Simão, J. Willardson, Ingrid Dias","doi":"10.1519/SSC.0000000000000688","DOIUrl":"https://doi.org/10.1519/SSC.0000000000000688","url":null,"abstract":"ABSTRACT Strength training (ST) has been studied for acute and chronic effects on blood pressure (BP) and heart rate variability (HRV). These effects have never been reviewed collectively concerning the variables that comprise a ST program. Therefore, this review aims to examine the manipulation of ST variables (i.e., load intensity, number of sets and repetitions, exercise order, and rest interval length) on BP and HRV after a session and a long-term program. The BP reduced significantly after an ST session independently of the load intensity, the number of sets and repetitions, the rest interval length, the mode, and the participant characteristic (healthy patients or patients with chronic disease). However, a high number of sets and repetitions, prioritizing multijoint exercises, with longer rest interval lengths between sets and exercises may potentiate these effects. In the HRV analyses, most of the trials showed a sympathetic predominance after an ST session. Hence, it is reasonable to confirm that central adjustments are responsible to control hemodynamics after an ST session.","PeriodicalId":21993,"journal":{"name":"Strength and Conditioning Journal","volume":"44 1","pages":"38 - 61"},"PeriodicalIF":2.5,"publicationDate":"2021-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43186553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-11DOI: 10.1519/SSC.0000000000000693
Thomas C Bennett, Philip Marshall, S. Barrett, J. Malone, C. Towlson
Supplemental Digital Content is Available in the Text. ABSTRACT High-speed running (HSR) has been documented within rugby league to differentiate playing standard and position and often precedes pivotal match events. Practitioners and researchers place importance on HSR because of its inclusion in assessing the demands of training and match play to help prescribe accurate training loads and recovery methods. HSR can be quantified in absolute terms whereby the same threshold speed is applied to all players (e.g., 5.0 m·s−1). Within rugby league, differences in tactical demand, anthropometric, and physical fitness characteristics exist between positions and players, suggesting that absolute HSR thresholds may not be appropriate because of underestimations and overestimations of HSR data. Alternatively, practitioners may individualize the threshold speed to individual players' physical qualities such as peak sprint speed, maximal aerobic speed (MAS), or the speed at which the ventilatory thresholds occur. Individualizing HSR warrants the practitioner to select a valid and practical test to quantify the HSR threshold speed. It is suggested that using peak sprint speed to quantify HSR can produce erroneous interpretation of HSR data while the practicality of specific physiological derived thresholds can be questioned. Implementing MAS to quantify HSR using a set time/distance trial may be the most appropriate approach for rugby league practitioners.
{"title":"Brief Review of Methods to Quantify High-Speed Running in Rugby League: Are Current Methods Appropriate?","authors":"Thomas C Bennett, Philip Marshall, S. Barrett, J. Malone, C. Towlson","doi":"10.1519/SSC.0000000000000693","DOIUrl":"https://doi.org/10.1519/SSC.0000000000000693","url":null,"abstract":"Supplemental Digital Content is Available in the Text. ABSTRACT High-speed running (HSR) has been documented within rugby league to differentiate playing standard and position and often precedes pivotal match events. Practitioners and researchers place importance on HSR because of its inclusion in assessing the demands of training and match play to help prescribe accurate training loads and recovery methods. HSR can be quantified in absolute terms whereby the same threshold speed is applied to all players (e.g., 5.0 m·s−1). Within rugby league, differences in tactical demand, anthropometric, and physical fitness characteristics exist between positions and players, suggesting that absolute HSR thresholds may not be appropriate because of underestimations and overestimations of HSR data. Alternatively, practitioners may individualize the threshold speed to individual players' physical qualities such as peak sprint speed, maximal aerobic speed (MAS), or the speed at which the ventilatory thresholds occur. Individualizing HSR warrants the practitioner to select a valid and practical test to quantify the HSR threshold speed. It is suggested that using peak sprint speed to quantify HSR can produce erroneous interpretation of HSR data while the practicality of specific physiological derived thresholds can be questioned. Implementing MAS to quantify HSR using a set time/distance trial may be the most appropriate approach for rugby league practitioners.","PeriodicalId":21993,"journal":{"name":"Strength and Conditioning Journal","volume":"44 1","pages":"69 - 79"},"PeriodicalIF":2.5,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41534130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-10DOI: 10.1519/SSC.0000000000000691
Chloe Ryan, Aaron M. Uthoff, C. McKenzie, John Cronin
ABSTRACT Change of direction (COD) ability is an important performance factor in many field and court sports. A common COD maneuver is the 180-degree turn, which is commonly assessed through the 5-0-5 COD test. Coaches and practitioners need to assess an athlete's COD performance and have access to normative data for these assessments. This review focuses on the traditional and modified 5-0-5 COD test. The 5-0-5 COD performance results have been gathered across 50 different studies and 11 different sports to create sport, sex, and level specific normative data so performance comparisons can be made, which in turn can drive programming to better effect. The reliability of both the traditional and modified 5-0-5 COD tests has been evaluated and discussed. Traditional COD ability of male athletes is better understood given there were 300 male athletes, compared with 62 female athletes. On average, males were 6.03% faster than females. Elite males were 7.78% faster than subelite and novice males, and subelite females were 3.30% faster than novice female athletes. Further research or collation of normative data is needed on female, youth, and elite cohorts to build more comprehensive databases.
{"title":"Traditional and Modified 5-0-5 Change of Direction Test: Normative and Reliability Analysis","authors":"Chloe Ryan, Aaron M. Uthoff, C. McKenzie, John Cronin","doi":"10.1519/SSC.0000000000000691","DOIUrl":"https://doi.org/10.1519/SSC.0000000000000691","url":null,"abstract":"ABSTRACT Change of direction (COD) ability is an important performance factor in many field and court sports. A common COD maneuver is the 180-degree turn, which is commonly assessed through the 5-0-5 COD test. Coaches and practitioners need to assess an athlete's COD performance and have access to normative data for these assessments. This review focuses on the traditional and modified 5-0-5 COD test. The 5-0-5 COD performance results have been gathered across 50 different studies and 11 different sports to create sport, sex, and level specific normative data so performance comparisons can be made, which in turn can drive programming to better effect. The reliability of both the traditional and modified 5-0-5 COD tests has been evaluated and discussed. Traditional COD ability of male athletes is better understood given there were 300 male athletes, compared with 62 female athletes. On average, males were 6.03% faster than females. Elite males were 7.78% faster than subelite and novice males, and subelite females were 3.30% faster than novice female athletes. Further research or collation of normative data is needed on female, youth, and elite cohorts to build more comprehensive databases.","PeriodicalId":21993,"journal":{"name":"Strength and Conditioning Journal","volume":"44 1","pages":"22 - 37"},"PeriodicalIF":2.5,"publicationDate":"2021-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47986762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-10DOI: 10.1519/ssc.0000000000000683
W. M. D. Souza, P. Nascimento, M. C. Vieira
{"title":"Importance of Muscle Strength in Chronic Heart Failure","authors":"W. M. D. Souza, P. Nascimento, M. C. Vieira","doi":"10.1519/ssc.0000000000000683","DOIUrl":"https://doi.org/10.1519/ssc.0000000000000683","url":null,"abstract":"","PeriodicalId":21993,"journal":{"name":"Strength and Conditioning Journal","volume":"44 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2021-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82553583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-10DOI: 10.1519/SSC.0000000000000680
J. Dawes, T. Lentine, Q. Johnson, R. Lockie, R. Orr
ABSTRACT Many essential occupational tasks performed by law enforcement officers are physically demanding. There are numerous challenges with developing and maintaining physical fitness within this population. These challenges can lead to a steady decline in health and fitness over the occupational life span and have a devastating impact on officer safety and wellness. The purpose of this column is to discuss physical training program considerations when working with law enforcement professionals and provide potential solutions to these barriers.
{"title":"Strength and Conditioning Program Design Considerations for Law Enforcement Officers","authors":"J. Dawes, T. Lentine, Q. Johnson, R. Lockie, R. Orr","doi":"10.1519/SSC.0000000000000680","DOIUrl":"https://doi.org/10.1519/SSC.0000000000000680","url":null,"abstract":"ABSTRACT Many essential occupational tasks performed by law enforcement officers are physically demanding. There are numerous challenges with developing and maintaining physical fitness within this population. These challenges can lead to a steady decline in health and fitness over the occupational life span and have a devastating impact on officer safety and wellness. The purpose of this column is to discuss physical training program considerations when working with law enforcement professionals and provide potential solutions to these barriers.","PeriodicalId":21993,"journal":{"name":"Strength and Conditioning Journal","volume":"43 1","pages":"110 - 114"},"PeriodicalIF":2.5,"publicationDate":"2021-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45296614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-10DOI: 10.1519/SSC.0000000000000692
Nico Kolokythas, G. Metsios, S. Galloway, Nick Allen, M. Wyon
ABSTRACT Epidemiological studies over the past decade indicate high injury prevalence in preprofessional ballet (76%) and professional contemporary and ballet dancers (60–69%). Injuries can have detrimental effects both for the dancers and the dance company. Most injuries are in the lower limb and reported as the gradual onset of overuse. Professional dance companies have reduced injury incidence and severity through the implementation of comprehensive injury audit programs and proactive exercise prescription. Injury prevention research in dance is scarce, and there has been no intervention targeting dance injuries. This article describes the development of 11+ Dance, an injury prevention training program designed for dancers, based on current evidence and best practice on injury prevention in sports. It is a 25–30-minute neuromuscular-based training program focused on strength, balance, and jumping/landing technique, with special attention to ankle, knee, and hip alignment. The high prevalence of injuries reported in the different styles of dance suggests that implementation of an injury prevention program is both the plausible and ethical action to take for all levels of performance.
{"title":"11+ Dance: A Neuromuscular Injury Prevention Exercise Program for Dancers","authors":"Nico Kolokythas, G. Metsios, S. Galloway, Nick Allen, M. Wyon","doi":"10.1519/SSC.0000000000000692","DOIUrl":"https://doi.org/10.1519/SSC.0000000000000692","url":null,"abstract":"ABSTRACT Epidemiological studies over the past decade indicate high injury prevalence in preprofessional ballet (76%) and professional contemporary and ballet dancers (60–69%). Injuries can have detrimental effects both for the dancers and the dance company. Most injuries are in the lower limb and reported as the gradual onset of overuse. Professional dance companies have reduced injury incidence and severity through the implementation of comprehensive injury audit programs and proactive exercise prescription. Injury prevention research in dance is scarce, and there has been no intervention targeting dance injuries. This article describes the development of 11+ Dance, an injury prevention training program designed for dancers, based on current evidence and best practice on injury prevention in sports. It is a 25–30-minute neuromuscular-based training program focused on strength, balance, and jumping/landing technique, with special attention to ankle, knee, and hip alignment. The high prevalence of injuries reported in the different styles of dance suggests that implementation of an injury prevention program is both the plausible and ethical action to take for all levels of performance.","PeriodicalId":21993,"journal":{"name":"Strength and Conditioning Journal","volume":"44 1","pages":"1 - 9"},"PeriodicalIF":2.5,"publicationDate":"2021-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44607083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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