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Daub BD, McLean BD, Heishman AD, Peak KM, Coutts AJ. The Relationship Between Mental Fatigue and Shooting Performance Over the Course of a National Collegiate Athletic Association Division I Basketball Season. J Strength Cond Res 2024; 38:334-341. [PMID: 38090974 DOI: 10.1519/jsc.0000000000004624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
ABSTRACT Daub, BD, McLean, BD, Heishman, AD, Peak, KM, and Coutts, AJ. The relationship between mental fatigue and shooting performance over the course of a National Collegiate Athletic Association Division I basketball season. J Strength Cond Res 38(2): 334-341, 2024-The aim of this investigation was to examine the presence of mental fatigue and concurrent changes in shooting performance across various experimental weeks throughout a National Collegiate Athletic Association (NCAA) basketball season. Fifteen elite male NCAA Division I collegiate basketball players (age 20.2 ± 1.2 years, height 199.3 ± 7.1 cm, and body mass 93.1 ± 8.6 kg) volunteered for this study. Mental fatigue and basketball shooting performance was evaluated at 4 timepoints with varying seasonal demands: high game volume (GAME), high academic load (ACADEMIC), no games and no academic load (PRACTICE), and standard number of games and academic requirements (TYPICAL). Subjective mental fatigue increased significantly ( p ≤ 0.05) from Pre to Post brief psychomotor vigilance test (PVT-B) measurements at the end of the ACADEMIC week ( p = 0.002, d = 1.51) and from beginning to end of the ACADEMIC week ( p < 0.001, d = 2.21). Ratings of mental effort were significantly increased during the ACADEMIC week ( p < 0.001, d = 1.67). Recovery stress questionnaire (REST-Q) showed significant differences between week GAME and ACADEMIC with an increase in Social Stress ( p = 0.001, d = 0.84), Fatigue ( p = 0.021, d = 1.12), Disturbed Breaks ( p = 0.024, d = 0.57), and Emotional Exhaustion ( p = 0.035, d = 0.75). Lower shooting performance was observed during the ACADEMIC week from Pre to Post ( p = 0.009, d = 0.35) and higher scores Pre to Post in the TYPICAL week ( p = 0.008, d = 0.25). Basketball shooting performance was significantly reduced after increased levels of mental fatigue stemming from added academic stress. In addition, an increase in sport-specific training or games had no effect on subsequent basketball shooting performance. Special consideration should be given by coaches around examination periods because the existence of academic stressors can influence basketball shooting performance.
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Affiliation(s)
- Bryce D Daub
- School of Sport, Exercise and Rehabilitation, University of Technology Sydney, Sydney, Australia
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma
| | - Blake D McLean
- School of Sport, Exercise and Rehabilitation, University of Technology Sydney, Sydney, Australia
- Oklahoma City Thunder Professional Basketball Club, Human and Player Performance, Oklahoma City, Oklahoma; and
| | - Aaron D Heishman
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma
- Vegas Golden Knights Professional Hockey Club, Sport Science and Performance, Las Vegas, Nevada
| | - Keldon M Peak
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma
| | - Aaron J Coutts
- School of Sport, Exercise and Rehabilitation, University of Technology Sydney, Sydney, Australia
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Daub BD, McLean BD, Heishman AD, Peak KM, Coutts AJ. Impacts of mental fatigue and sport specific film sessions on basketball shooting tasks. Eur J Sport Sci 2023; 23:1500-1508. [PMID: 36584309 DOI: 10.1080/17461391.2022.2161421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
PURPOSE The aim of this investigation was to examine the impact of mental fatigue on basketball specific shooting performance, utilising the newly developed basketball Standardized Shooting Task (SST). METHODS Fifteen male elite NCAA Division 1 collegiate basketball players (Age 20.2 ± 1.2 y, height 199.3 ± 7.1 cm, body mass 93.1 ± 8.6 kg) volunteered to participate in a randomised, counterbalanced crossover design undergoing three conditions (Control, Stroop, and Film). The task, performed on three consecutive days, was comprised of 60 free throw attempts followed by a 4-minute spot-to-spot shooting. RESULTS Visual Analog Scales revealed significantly higher levels of mental fatigue following the Stroop (54.2 ± 24.5) condition compared to the Control (24.5 ± 16.2) and higher levels of mental effort in the Stroop (61.0 ± 31.3) and Film (49.9 ± 27.7) compared to the Control (14.0 ± 18.5). No significant differences were observed for Motivation among groups (p > 0.05). There was a significant decrease (p = 0.006) in number of shots made in 4-minutes (MAKE4MIN; control = 49.5 ± 10.2, Stroop = 44.0 ± 10.6, and Film = 45.1 ± 11.7) and shots missed in 4-minutes (MISS4MIN; control = 27.3 ± 7.0, Stroop = 30.9 ± 7.1, and Film = 30.9 ± 7.6). No significant differences were detected for any other performance variables. CONCLUSION These data demonstrate that mental fatigue negatively impacts basketball shooting performance in elite collegiate basketball players. We suggest that practitioners and coaches encourage athletes to abstain from cognitively demanding tasks prior to basketball competition.
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Affiliation(s)
- Bryce D Daub
- University of Technology Sydney, School of Sport, Exercise and Rehabilitation, Sydney, Australia
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, OK, USA
| | - Blake D McLean
- University of Technology Sydney, School of Sport, Exercise and Rehabilitation, Sydney, Australia
- Oklahoma City Thunder Professional Basketball Club, Human and Player Performance, Oklahoma City, OK, USA
| | - Aaron D Heishman
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, OK, USA
- Vegas Golden Knights Professional Hockey Club, Las Vegas, USA
| | - Keldon M Peak
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, OK, USA
| | - Aaron J Coutts
- University of Technology Sydney, School of Sport, Exercise and Rehabilitation, Sydney, Australia
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Miller RM, Freitas ED, Heishman AD, Peak KM, Buchanan SR, Bemben DA, Bemben MG. Associations of serum IL-6 with muscle, bone, and adipose tissue in women. Cytokine 2022; 151:155787. [DOI: 10.1016/j.cyto.2021.155787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 11/09/2021] [Accepted: 12/06/2021] [Indexed: 11/17/2022]
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Miller RM, Heishman AD, Freitas ED, Peak KM, Carr JC, Buchanan SR, Kellawan JM, Pereira HM, Bemben DA, Bemben MG. Midthigh Muscle Composition Across The Adult Female Lifespan. Med Sci Sports Exerc 2021. [DOI: 10.1249/01.mss.0000760632.91046.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Freitas EDS, Miller RM, Heishman AD, Peak KM, Bemben DA, Larson RD, Pereira HM, Bemben MG. The Physiological Responses Of Multiple Sclerosis Patients To Blood Flow Restriction Versus Traditional Resistance Exercise. Med Sci Sports Exerc 2021. [DOI: 10.1249/01.mss.0000764468.92254.2f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Heishman AD, Daub BD, Miller RM, Freitas EDS, Bemben MG. Longitudinal Hydration Assessment in Collegiate Basketball Players Over Various Training Phases. J Strength Cond Res 2021; 35:1089-1094. [PMID: 30272627 DOI: 10.1519/jsc.0000000000002845] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
ABSTRACT Heishman, AD, Daub, BD, Miller, RM, Freitas, EDS, and Bemben, MG. Longitudinal hydration assessment in collegiate basketball players over various training phases. J Strength Cond Res 35(4): 1089-1094, 2021-To the best of our knowledge, previous literature has not longitudinally examined hydration status in collegiate basketball players. Therefore, the purpose of this investigation was to examine the prepractice hydration status of collegiate basketball players across various training phases for 2 consecutive years. Retrospective analyses examined prepractice urine-specific gravity (USG) assessments obtained from National Collegiate Athletic Association (NCAA) Division I male basketball players during the preseason and competitive season, for 2 consecutive years. The first year (year 1 = Y1) of analysis consisted of 15 athletes and the second year (year 2 = Y2) consisted of 16 athletes, with 8 athletes in both seasons. Hydration status was classified based on the National Athletic Trainers' criteria: (a) euhydrated, USG < 1.020; (b) hypohydrated, USG = 1.020-1.030; and (c) significantly hypohydrated, USG > 1.030. Additional comparisons examined the association of minutes played with hydration status and changes in hydration status for athletes returning from Y1 to Y2. The results indicated 55-65.7% of cases showed levels of significant hypohydration during the preseason and competitive seasons for both years. Preseason hydration status was significantly better than the competitive season (Y1, p = 0.008; Y2, p = 0.005). Despite significant differences in minutes played (p < 0.001), no differences in hydration status were observed. Returning athletes displayed no differences in hydration status between Y1 and Y2. Collegiate basketball players show levels of hypohydration when longitudinally examined across various training phases. Although hydration may be improved in the preseason, alternative factors such as average game minutes played and length in program may not influence hydration status.
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Affiliation(s)
- Aaron D Heishman
- Departments of Health and Exercise Science; and.,Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma
| | - Bryce D Daub
- Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma
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Stone BL, Heishman AD, Campbell JA. Effects of an Experimental vs. Traditional Military Training Program on 2-Mile Run Performance During the Army Physical Fitness Test. J Strength Cond Res 2020; 34:3431-3438. [PMID: 33235017 DOI: 10.1519/jsc.0000000000002176] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Stone, BL, Heishman, AD, and Campbell, JA. The effects of an experimental vs. traditional military training program on 2-mile run performance during the army physical fitness test. J Strength Cond Res 34(12): 3431-3438, 2020-The purpose of this study was to compare the effects of an experimental vs. traditional military run training on 2-mile run ability in the Army Reserve Officers' Training Corps cadets. Fifty college-aged cadets were randomly placed into 2 groups and trained for 4 weeks with either an experimental running program (EXP, n = 22) comprised rating of perceived exertion (RPE) intensity-specific, energy system-based intervals or with traditional military running program (TRA, n = 28) using a crossover study design. A 2-mile run assessment was performed just before the start, at the end of the first 4 weeks, and again after the second 4 weeks of training after crossover. The EXP program significantly decreased 2-mile run times (961.3 ± 155.8 seconds to 943.4 ± 140.2 seconds, p = 0.012, baseline to post 1), whereas the TRA group experienced a significant increase in run times (901.0 ± 79.2 vs. 913.9 ± 82.9 seconds) over the same training period. There was a moderate effect size (d = 0.61, p = 0.07) for the experimental run program to "reverse" the adverse effects of the traditional program within the 4-week training period (post 1 to post 2) after treatment crossover. Thus, for short-term training of military personnel, RPE intensity-specific running program comprising aerobic and anaerobic system development can enhance 2-mile run performance superior to a traditional program while reducing training volume (60 minutes per session vs. 43.2 minutes per session, respectively). Future research should extend the training period to determine efficacy of this training approach for long-term improvement of aerobic capacity and possible reduction of musculoskeletal injury.
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Affiliation(s)
- Brandon L Stone
- Sport and Military Performance Analytics Laboratory, Department of Health and Exercise Science, College of Arts and Sciences, The University of Oklahoma, Norman, Oklahoma
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Freitas EDS, Galletti BRA, Koziol KJ, Miller RM, Heishman AD, Black CD, Bemben D, Bemben MG. The Acute Physiological Responses to Traditional vs. Practical Blood Flow Restriction Resistance Exercise in Untrained Men and Women. Front Physiol 2020; 11:577224. [PMID: 33117195 PMCID: PMC7552431 DOI: 10.3389/fphys.2020.577224] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/09/2020] [Indexed: 11/13/2022] Open
Abstract
This study compared the acute physiological responses of traditional and practical blood flow restriction resistance exercise (tBFR and pBFR, respectively) and high- and low-load resistance exercise without BFR (HL and LL, respectively), as well as the potential sex differences within the aforementioned exercise methods. Fourteen men and fifteen women randomly completed the following experimental conditions: (1) tBFR, consisting of four sets of 30-15-15-15 repetitions of the bilateral horizontal leg press and knee extension exercises, at 30% of one-repetition maximum (1-RM), with a 13.5 cm wide pneumatic cuff placed at the most proximal portion of each thigh and inflated to a pressure equivalent to 50% of the participant’s total occlusion pressure; (2) pBFR, which was the same as the tBFR condition, except that an elastic band wrapped around the proximal portion of each thigh at a tightness of 7 on a 0 to 10 perceived pressure scale was used to reduce blood flow; (3) LL, same as the tBFR and pBFR protocols, except that no BFR was applied; and (4) HL, consisting of 3 sets of 10 repetitions at 80% of 1-RM, with the same 1-min rest interval between sets and a 3-min rest period between exercises. At baseline, immediately post-, 5 min post-, and 15 min post-exercise, whole-blood lactate (WBL), indices of muscle swelling (muscle thickness and thigh circumference), hematocrit and plasma volume changes, were measured as well as superficial electromyography (sEMG) amplitude during exercise. There were no significant (p > 0.05) differences between the tBFR and pBFR exercise protocols for any of the physiological parameters assessed. However, significantly greater (p < 0.05) WBL and sEMG values were observed for HL compared to the remaining exercise conditions. Finally, males displayed greater WBL levels than females at 15 min post-exercise. Interestingly, males also displayed significantly (p < 0.05) greater sEMG amplitude than females within the low-load trials during leg press, but no significant (p < 0.05) sex differences were observed during knee extension. In conclusion, tBFR and pBFR seemed to be capable of inducing the same acute physiological responses. Furthermore, males displayed greater responses than females for some of the physiological parameters measured.
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Affiliation(s)
- Eduardo D S Freitas
- Neuromuscular Laboratory, Department of Health and Exercise Science, The University of Oklahoma, Norman, OK, United States
| | - Bianca R A Galletti
- Neuromuscular Laboratory, Department of Health and Exercise Science, The University of Oklahoma, Norman, OK, United States
| | - Karolina J Koziol
- Neuromuscular Laboratory, Department of Health and Exercise Science, The University of Oklahoma, Norman, OK, United States
| | - Ryan M Miller
- Neuromuscular Laboratory, Department of Health and Exercise Science, The University of Oklahoma, Norman, OK, United States
| | - Aaron D Heishman
- Neuromuscular Laboratory, Department of Health and Exercise Science, The University of Oklahoma, Norman, OK, United States
| | - Christopher D Black
- Sensory and Muscle Function Laboratory, Department of Health and Exercise Science, The University of Oklahoma, Norman, OK, United States
| | - Debra Bemben
- Bone Density Research Laboratory, Department of Health and Exercise Science, The University of Oklahoma, Norman, OK, United States
| | - Michael G Bemben
- Neuromuscular Laboratory, Department of Health and Exercise Science, The University of Oklahoma, Norman, OK, United States
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Heishman AD, Daub BD, Miller RM, Freitas EDS, Frantz BA, Bemben MG. Countermovement Jump Reliability Performed With and Without an Arm Swing in NCAA Division 1 Intercollegiate Basketball Players. J Strength Cond Res 2020; 34:546-558. [PMID: 30138237 DOI: 10.1519/jsc.0000000000002812] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Heishman, AD, Daub, BD, Miller, RM, Freitas, EDS, Frantz, BA, and Bemben, MG. Countermovement jump reliability performed with and without an arm swing in NCAA Division 1 intercollegiate basketball players. J Strength Cond Res 34(2): 546-558, 2020-The countermovement jump (CMJ) is routinely used in athlete performance to quantify adaptions to training, as well as monitor neuromuscular readiness and fatigue. However, controversy remains in whether to incorporate an arm swing during the CMJ (CMJ AS) or keep the hands placed on the hips (CMJ NAS). Incorporating the arms provides a higher degree of sport-specificity that may yield improved reliability, especially in skilled jumpers. By contrast, the hands-on-hips approach isolates lower extremity force production and eliminates potential arm-swing variation. Therefore, the purpose of this study was to establish the reliability of CMJ typical (CMJ-TYP), CMJ concentric alternative (CMJ-Conc-ALT), and CMJ eccentric alternative (CMJ-Ecc-ALT) variables obtained during the CMJ AS and CMJ NAS. Twenty-two (men = 14, women = 8) NCAA Division 1 collegiate basketball players performed 3 CMJ AS and 3 CMJ NAS on a force plate, in a randomized order. To assess the test-retest reliability, participants returned 1 week later to perform 3 additional CMJ AS and 3 CMJ NAS. Intraclass correlation coefficient (ICC) and coefficient of variation (CV) were used to assess intersession and intrasession reliability for the various CMJ variables. A majority of CMJ-TYP and several CMJ-Conc-ALT and CMJ-Ecc-ALT variables exhibited adequate intersession and intrasession reliability (ICC > 0.700 and CV <10%) during both the CMJ AS and the CMJ NAS. Countermovement jump AS may provide more pertinent information about long-term changes in sport-specific performance, whereas the CMJ NAS may be more beneficial for detecting acute changes in neuromuscular fatigue and athlete readiness.
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Affiliation(s)
- Aaron D Heishman
- Departmetn of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma; and.,Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma
| | - Bryce D Daub
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma
| | - Ryan M Miller
- Departmetn of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma; and
| | - Eduardo D S Freitas
- Departmetn of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma; and
| | - Brett A Frantz
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma
| | - Michael G Bemben
- Departmetn of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma; and
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Miller RM, Galletti BAR, Koziol KJ, Freitas EDS, Heishman AD, Black CD, Larson DJ, Bemben DA, Bemben MG. Perceptual responses: Clinical versus practical blood flow restriction resistance exercise. Physiol Behav 2020; 227:113137. [PMID: 32798570 DOI: 10.1016/j.physbeh.2020.113137] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/25/2022]
Abstract
The purpose of the current investigation was to compare the acute perceptual responses during low-load resistance exercise (RE) with clinical blood flow restriction (cBFR-RE) and practical blood flow restriction (pBFR-RE), and during conventional low- (LL-RE) and high-load resistance exercise (HL-RE), to determine if these responses differed between young males and females. Twenty-nine participants (14 males: 23.6±2.7years, 25.3±3.1kg/m2 and 15 females: 20.3±1.6years, 23.4±1.9kg/m2) completed the following exercise conditions in a randomized design: 1) cBFR-RE, 2) pBFR-RE, 3) HL-RE, and 4) LL-RE. Low-load conditions consisted of 30-15-15-15 repetitions of two-leg press (LP) and knee extension (KE) exercises with 30% one-repetition maximum (1-RM), and HL-RE consisted of 3 sets of 10 repetitions at 80% 1-RM, all with 60s rest intervals. Ratings of perceived exertion (RPE) and discomfort were assessed before exercise and immediately following each set. RPE was significantly higher in HL-RE compared to all low-load conditions for both exercises after each set (all p<0.05). cBFR-RE resulted in significantly greater RPE than pBFR-RE and LL-RE for both exercises for sets 1-4 for LP and sets 2-3 for KE (all p<0.05). Levels of discomfort were similar between cBFR-RE and HL-RE, which tended to be significantly higher than pBFR-RE and LL-RE (p<0.05). Men reported significantly greater RPE than women following sets 2-4 during KE with cBFR-RE and sets 2 and 3 during KE for HL-RE (all p<0.05). Males also reported significantly greater discomfort than women following sets 2-4 for KE LL-RE (p<0.05). Altogether, these data suggest that pBFR-RE may provide a more favorable BFR condition based on perceptual responses and that perceptual responses may differ between sexes across varying resistance exercise conditions.
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Affiliation(s)
- Ryan M Miller
- Department of Health and Exercise Science, Neuromuscular Research Laboratory, University of Oklahoma, Norman, Oklahoma, USA.
| | - Bianca A R Galletti
- Department of Health and Exercise Science, Neuromuscular Research Laboratory, University of Oklahoma, Norman, Oklahoma, USA
| | - Karolina J Koziol
- Department of Health and Exercise Science, Neuromuscular Research Laboratory, University of Oklahoma, Norman, Oklahoma, USA
| | - Eduardo D S Freitas
- Department of Health and Exercise Science, Neuromuscular Research Laboratory, University of Oklahoma, Norman, Oklahoma, USA
| | - Aaron D Heishman
- Department of Health and Exercise Science, Neuromuscular Research Laboratory, University of Oklahoma, Norman, Oklahoma, USA; Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma, USA
| | - Christopher D Black
- Department of Health and Exercise Science, Sensory and Muscle Function Research Laboratory, University of Oklahoma, USA
| | - Daniel J Larson
- Departmeny of Health and Exercise Science, Sport, Health, and Exercise Data Analytics Laboratory, University of Oklahoma, Norman, Oklahoma, USA
| | - Debra A Bemben
- Departmeny of Health and Exercise Science, Bone Density Research Laboratory, University of Oklahoma, Norman, Oklahoma, USA
| | - Michael G Bemben
- Department of Health and Exercise Science, Neuromuscular Research Laboratory, University of Oklahoma, Norman, Oklahoma, USA
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Miller RM, Heishman AD, Freitas ED, Buchanan SR, Kaur J, Brown BS, Peak KM, Norman JN, Joniak KE, Kellawan JM, Pereira HM, Bemben DA, Bemben MG. Critical Ages For Changes In Isometric Force Production In Women Aged 20 To 89 Years. Med Sci Sports Exerc 2020. [DOI: 10.1249/01.mss.0000680288.18980.b0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Brown BS, Heishman AD, Miller RM, Freitas ED, Peak KM, Bemben MG. Interlimb Asymmetries With High And Low External Training Loads In Male Collegiate Basketball Athletes. Med Sci Sports Exerc 2020. [DOI: 10.1249/01.mss.0000685156.24780.7d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Freitas EDS, Miller RM, Heishman AD, Kaur J, Peak KM, Combs C, Bemben DA, Larson R, Pereira HM, Bemben MG. The Perceptual Responses Of Multiple Sclerosis Patients To Traditional Versus Blood Flow Restriction Resistance Exercise. Med Sci Sports Exerc 2020. [DOI: 10.1249/01.mss.0000681200.43988.56] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Miller RM, Heishman AD, Freitas ED, Bemben MG. Evaluating the Effects of Underloaded and Overloaded Warm-ups on Subsequent Swing Velocity. J Strength Cond Res 2020; 34:1071-1077. [DOI: 10.1519/jsc.0000000000002206] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Freitas EDS, Miller RM, Heishman AD, Ferreira-Júnior JB, Araújo JP, Bemben MG. Acute Physiological Responses to Resistance Exercise With Continuous Versus Intermittent Blood Flow Restriction: A Randomized Controlled Trial. Front Physiol 2020; 11:132. [PMID: 32256374 PMCID: PMC7090220 DOI: 10.3389/fphys.2020.00132] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 02/06/2020] [Indexed: 11/13/2022] Open
Abstract
The primary goal of this investigation was to examine the physiological responses of blood flow restriction (BFR) resistance exercise (RE) performed with continuous or intermittent BFR and to compare these results to those from conventional high- and low-load RE without BFR. Fourteen men randomly completed the following experimental trials: (1) low-load RE with continuous BFR (cBFR), (2) low-load RE with intermittent BFR (iBFR), (3) low-load RE without BFR (LI), and (4) conventional high-load RE without BFR (HI). For the cBFR, iBFR, and LI exercise trials, participants performed four sets of 30-15-15-15 repetitions of the bilateral leg press (LP) and knee extension (KE) exercises, at an intensity of 20% of their one-repetition maximum (1-RM), at a 1.5-s contraction speed, and with a 1-min rest period between sets. The only difference between the cBFR and iBFR protocols was that the pressure of the cuffs was released during the rest intervals between sets for the iBFR trial. For the HI trial, participants completed four sets of 10 repetitions of the same exercises, at 70% of 1-RM, with a 1-min rest period between sets, and at the same contraction speed. Muscle activity was assessed during each set using superficial electromyography, as well as changes in blood lactate concentration [La-] from baseline at 5 min post exercise and in muscle swelling and plasma volume (%ΔPV) at 5 and 15 min post exercise. There were no significant differences in muscle activity (p < 0.05) across the cBFR, iBFR, and LI protocols at any time point, whereas they were all significantly lower than HI. There were also no significant (p < 0.05) differences across the three low-load RE conditions for [La-],%ΔPV, or muscle swelling. HI elicited significantly (p < 0.05) greater responses than cBFR, iBFR, and LI for all the physiological markers measured. In conclusion, RE combined with cBFR or iBFR induce the same acute physiological responses. However, the largest physiological responses are observed with HI, probably because of the significantly greater exercise volumes. Therefore, releasing the pressure of the restrictive cuffs during the rest periods between sets will not hinder the acute physiological responses from BFR RE.
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Affiliation(s)
- Eduardo D S Freitas
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK, United States
| | - Ryan M Miller
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK, United States
| | - Aaron D Heishman
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK, United States
| | - João B Ferreira-Júnior
- Kinanthropometry and Human Performance Laboratory, Federal Institute of Sudeste of Minas Gerais, Rio Pomba, Brazil
| | - Joamira P Araújo
- Kinanthropometry and Human Performance Laboratory, Department of Physical Education, Federal University of Paraíba, João Pessoa, Brazil
| | - Michael G Bemben
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, OK, United States
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Heishman AD, Daub BD, Miller RM, Freitas EDS, Bemben MG. Monitoring External Training Loads and Neuromuscular Performance for Division I Basketball Players over the Preseason. J Sports Sci Med 2020; 19:204-212. [PMID: 32132844 PMCID: PMC7039036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 12/16/2019] [Indexed: 06/10/2023]
Abstract
Limited research has paralleled concomitant changes in external training load (eTL) and countermovement jump (CMJ) performance. Therefore, this investigation characterized eTL and CMJ performance changes across preseason training in Division 1 male collegiate basketball athletes, while examining the influence of position (Guard vs. Forward/Center) and scholarship status (Scholarship = S vs. Walk-on = WO). During 22 practices, eTL was monitored in 14 male athletes, with weekly CMJs performed to quantify neuromuscular performance (Jump Height [JH], Flight Time:Contraction Time [FT:CT], Reactive Strength Index Modified [RSIMod ]). PlayerLoad per minute was significantly higher during W1 and W2 (5.4 ± 1.3au and 5.3 ± 1.2au, respectively; p < 0.05) compared to subsequent weeks, but no additional differences in eTL parameters across time were observed. Scholarship athletes displayed greater PlayerLoad (S = 777.1 ± 35.6, WO = 530.1 ± 56.20; Inertial Movement Analysis (IMA) IMA_High (S = 70.9 ± 15.2, WO = 41.3 ± 15.2); IMA_Medium (S = 159.9 ± 30.7, WO = 92.7 ± 30.6); and IMA_Low (S = 700.6 ± 105.1, WO = 405 ± 105.0;) (p < 0.05), with no observed differences in eTL by position. Moderate decreases in FT:CT and RSIMod paralleled increased eTL. Significant increases in practice intensity (W1 and W2) did not impact CMJ performance, suggesting athletes could cope with the prescribed training loads. However, moderate perturbations in FT:CT and RSIMod paralleled the weeks with intensified training. Cumulatively, scholarship status appears to influence eTL while player position does not.
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Affiliation(s)
- Aaron D Heishman
- Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma, USA
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma, USA
| | - Bryce D Daub
- Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, Oklahoma, USA
| | - Ryan M Miller
- Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma, USA
| | - Eduardo D S Freitas
- Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma, USA
| | - Michael G Bemben
- Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma, USA
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Miller RM, Freitas ED, Heishman AD, Koziol KJ, Galletti BA, Kaur J, Bemben MG. Test-Retest Reliability Between Free Weight and Machine-Based Movement Velocities. J Strength Cond Res 2020; 34:440-444. [DOI: 10.1519/jsc.0000000000002817] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Miller RM, Heishman AD, Freitas ED, Bemben MG. Barbell velocity: a practical and precise method for predicting bench press strength in sedentary women. J Sports Med Phys Fitness 2019; 60:338-344. [PMID: 31684703 DOI: 10.23736/s0022-4707.19.10130-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Bench press one-repetition maximum (BP1RM) prediction models offer a timely approach to predict BP1RM while avoiding the limitations with traditional BP1RM testing. Interestingly, no models have determined the ability for a traditional weight, the 20.5 kg barbell, to predict BP1RM strength. Few models have exclusively examined females and sedentary individuals, leaving the accuracy of these models unknown for these populations. Therefore, this investigation sought to examine the ability for 20.5 kg barbell velocity to predict BP1RM in sedentary females. METHODS Nineteen sedentary females (21.79±1.43 years, 166.08±7.76 cm, 63.98±7.54 kg, 31.57±4.72 BP1RM) completed BP1RM testing and completed two additional visits to determine 20.5 kg barbell velocity from a single repetition separated by 7-10 days. Nineteen additional females (21.39±1.09 years, 164.31±7.37 cm, 67.34±9.32 kg, 32.75±5.09 BP1RM) served as a cross-validating group completing identical testing procedures. RESULTS Regression analyses revealed that 20.5 kg barbell velocity accounted for 95% of the variance in BP1RM strength while presenting marginal standard error (1.34 kg) and mean absolute error (0.97 kg), with similar values observed in the cross-validating group (SEE: 2.13 kg, MAE: 1.56 kg). Predicted BP1RM values were not significantly different from actual BP1RM (P=0.43) nor were measures in barbell velocity between trials 1 and 2 (P=0.57), while displaying high reliability (ICC: 0.81). Measure bias between BP1RM methods was 0.449±1.651kg and the agreement between methods varied between -2.78 kg less and 0.3686 kg greater for 95% of the participants. CONCLUSIONS The present data provides an accurate prediction model regarding BP1RM for sedentary females. These findings can reduce the limitations associated with traditional BP1RM testing while providing a practical and accurate BP1RM approximation with marginal error.
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Affiliation(s)
- Ryan M Miller
- Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA -
| | - Aaron D Heishman
- Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA.,Department of Athletics, Basketball Strength and Performance, University of Oklahoma, Norman, OK, USA
| | - Eduardo D Freitas
- Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA
| | - Michael G Bemben
- Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA
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Freitas EDS, Miller RM, Heishman AD, Aniceto RR, Silva JGC, Bemben MG. Perceptual responses to continuous versus intermittent blood flow restriction exercise: A randomized controlled trial. Physiol Behav 2019; 212:112717. [PMID: 31629764 DOI: 10.1016/j.physbeh.2019.112717] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 10/16/2019] [Accepted: 10/16/2019] [Indexed: 11/29/2022]
Abstract
We investigated the perceptual responses to resistance exercise (RE) with continuous and intermittent blood flow restriction (BFR). Fourteen males randomly completed the following exercise conditions: low-load RE with continuous BFR (cBFR), low-load RE with intermittent BFR (iBFR), low-load RE without BFR (LI), and traditional high-load RE (HI). Participants completed 4 sets of 30-15-15-15 repetitions of bilateral leg press and knee extension exercises during the low-load conditions, at 20% of one-repetition maximum (1-RM), a 1.5‑sec metronome-controlled pace, with a 1-min rest interval between sets; HI consisted of 4 sets of 10 repetitions of the same exercises, at 70% 1-RM, with the same pace and rest interval. Ratings of perceived exertion (RPE) and discomfort were assessed using psychometric scales before exercise and after each set. RPE displayed no significant differences (p > 0.05) between the BFR conditions for either exercise. Additionally, both BFR conditions elicited significantly (p < 0.05) greater RPE than LI and significantly (p <0.05) lower RPE than HI during both exercises. Rating of discomfort displayed no significant differences between BFR conditions during the first two sets of leg press; however, cBFR evoked greater discomfort compared to iBFR during the last two sets. There were no significant (p > 0.05) differences observed between conditions during the knee extension exercise. Rating of discomfort was similar between the BFR and HI conditions and each were significantly greater than LI during both exercises. Therefore, cBFR and iBFR seem to produce similar perceptual responses, which are greater than LI and lower than HI, but similar in regards to discomfort.
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Affiliation(s)
- Eduardo D S Freitas
- Department of Health and Exercise Science, Neuromuscular Research Laboratory, University of Oklahoma, Norman, OK, USA.
| | - Ryan M Miller
- Department of Health and Exercise Science, Neuromuscular Research Laboratory, University of Oklahoma, Norman, OK, USA
| | - Aaron D Heishman
- Department of Health and Exercise Science, Neuromuscular Research Laboratory, University of Oklahoma, Norman, OK, USA
| | - Rodrigo R Aniceto
- Department of Physical Education, Kinanthropometry and Human Performance Laboratory, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Julio G C Silva
- Study and Research Group in Biomechanics and Psychophysiology of Exercise, Federal Institute of Education, Science and Technology of Rio Grande do Norte, Currais Novos, RN, Brazil
| | - Michael G Bemben
- Department of Health and Exercise Science, Neuromuscular Research Laboratory, University of Oklahoma, Norman, OK, USA
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Freitas EDS, Miller RM, Heishman AD, Kaur J, Brown BS, Silva JCG, Aniceto RR, Ferreira-Junior JB, Bemben MG. The Perceptual Responses to Continuous vs Intermittent Blood Flow Restriction Resistance Exercise. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000561680.76495.d4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Miller RM, Freitas ED, Heishman AD, Kaur J, Brown BS, Bemben MG. Obesity Further Impairs Neuromuscular and Functional Performance in Older Women. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000561755.22246.a0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Miller RM, Freitas ED, Heishman AD, Kaur J, Koziol KJ, Galletti BA, Bemben MG. Maximal power production as a function of sex and training status. Biol Sport 2019; 36:31-37. [PMID: 30899137 PMCID: PMC6413571 DOI: 10.5114/biolsport.2018.78904] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 05/30/2018] [Accepted: 06/26/2018] [Indexed: 11/17/2022] Open
Abstract
Maximal muscular power is achieved at lower percentages of maximal strength (1RM); however, this notion has not been elucidated based on sex or training status. Therefore, the purpose of this investigation was to examine the influence of sex and training status on maximal power production. Sixty men and women (resistance trained or untrained) completed 1RM testing for the two-leg press (2LP) and bench press (BP). Participants then returned to perform single repetitions at 20, 30, 40, 50, 60, 70 and 80% of their 1RM to determine muscular power. Factorial analyses determined significant interactions (training status by sex by intensity) for the BP (F=35.6, p<0.001) and 2LP (F=8.2, p<0.001). Subsequent analyses indicated that during the BP trained men produce maximal power between 30-40% 1RM compared to untrained men at 60-70% 1RM. Trained women produced maximal power at 50% 1RM compared to untrained women at 60-70% 1RM. During the 2LP, trained men produced maximal power at 40% 1RM compared to untrained men at 60% 1RM. Trained women produced maximal power at 50% 1RM compared to 60-70% 1RM in untrained women. These data suggest that resistance trained individuals and men display maximal power at a lower relative intensity than untrained individuals and women.
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Affiliation(s)
- Ryan M Miller
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
| | - Eduardo D Freitas
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
| | - Aaron D Heishman
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
| | - Japneet Kaur
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
| | - Karolina J Koziol
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
| | - Bianca A Galletti
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
| | - Michael G Bemben
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
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Miller RM, Freitas EDS, Heishman AD, Stone BL, Bemben MG. The High Precision of Functional and Neuromuscular Measures to Classify Sarcopenia in Older Women. J Geriatr Phys Ther 2019; 42:E55-E61. [PMID: 30601293 DOI: 10.1519/jpt.0000000000000219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND AND PURPOSE Previous literature suggests that reductions in appendicular skeletal mass (ASM) may have a greater detrimental effect than total lean body mass regarding the onset and progression of sarcopenia. Unfortunately, limited access to equipment that accurately determines ASM often leads to many individuals remaining undiagnosed and experiencing functional decline. Therefore, the purpose of this investigation was to determine the ability of functional and neuromuscular measures to identify ASM in older women. METHODS Forty-one (sarcopenic n = 15) older women underwent body composition analysis via dual-energy X-ray absorptiometry (DXA) and performed the following measures: bench press (BP) 1-repetition maximum strength (1RM), vertical jump height and power, handgrip strength, Timed Up and Go test, Berg Balance Scale testing, and bench press power testing at 20%, 40%, and 60% 1RM. RESULTS AND DISCUSSION Regression analyses revealed 3 significant models accounting for 93.8%, 91.1%, and 86.4% of the variance in DXA-derived ASM. Paired-samples t tests revealed no significant differences between model-derived and DXA-derived ASM for each model, and each model was significantly correlated to DXA-derived ASM (P < .001). In addition, each model revealed a strong ability to appropriately classify sarcopenia status, with the area under the curve values ranging from 0.86 to 0.93. The present data indicate that ASM can be determined with high precision by measuring outcome variables such as jump power, body weight, and grip strength in older women. CONCLUSIONS Therefore, the present models could be used to identify, screen, or classify older women as sarcopenic, ultimately allowing the implementation of interventions aimed at decreasing the difficulty of activities of daily living and increasing quality of life.
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Affiliation(s)
- Ryan M Miller
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman
| | - Eduardo D S Freitas
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman
| | - Aaron D Heishman
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman
| | - Brandon L Stone
- Human Circulation Research Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman
| | - Michael G Bemben
- Neuromuscular Laboratory, Department of Health and Exercise Science, University of Oklahoma, Norman
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Miller RM, Keeter VM, Freitas EDS, Heishman AD, Knehans AW, Bemben DA, Bemben MG. Effects of Blood-Flow Restriction Combined With Postactivation Potentiation Stimuli on Jump Performance in Recreationally Active Men. J Strength Cond Res 2018; 32:1869-1874. [PMID: 28682937 DOI: 10.1519/jsc.0000000000002110] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Miller, RM, Keeter, VM, Freitas, EDS, Heishman, AD, Knehans, AW, Bemben, DA, and Bemben, MG. Effects of blood-flow restriction combined with postactivation potentiation stimuli on jump performance in recreationally active men. J Strength Cond Res 32(7): 1869-1874, 2018-Whole-body vibration (WBV) and maximum voluntary contractions (MVCs) combined with blood-flow restriction (BFR) to augment postactivation potentiation have yet to be examined. Therefore, the purpose of this investigation was to examine the augmented effects of postactivation potentiation when WBV and MVC are combined with BFR. Twenty men (21.8 ± 2.6 years, 180.5 ± 6.2 cm and 84.5 ± 12.1 kg) completed the study. Participants completed 3 testing sessions in a randomized design that included one of the following: (a) control (CON), (b) WBV and WBV combined with BFR (WBV + BFR), or (c) MVC and MVC combined with BFR (MVC + BFR). Jump height and power were recorded for 3 trials, PRE and POST jump height (cm) mean ± SD for each were as follows: CON 58.9 ± 8.6 and 57.9 ± 8.6, WBV 58.2 ± 8.1 and 59.9 ± 8.1, WBV + BFR 58.7 ± 7.6 and 60.2 ± 8.1, MVC 59.7 ± 7.4 and 60.2 ± 8.6, and MVC + BFR 57.7 ± 7.9 and 59.4 ± 8.1. PRE and POST jump power (W) mean ± SD for each were as follows: CON 1,224.3 ± 221.5 and 1,234.3 ± 189.2, WBV 1,251.1 ± 230.4 and 1,266.1 ± 215.7, WBV + BFR 1,265.8 ± 207.9 and 1,259 ± 223.3, MVC 1,264.7 ± 211.9 and 1,263.5 ± 236.5, and MVC + BFR 1,252.3 ± 222.0 and 1,294.6 ± 256.6. Significant differences were revealed in jump height between the 5 interventions (p < 0.01), WBV (p < 0.01), WBV + BFR (p < 0.01), and MVC + BFR (p < 0.01) revealed significant differences in time but no differences in jump power. In conclusion, the results of this study indicate that WBV, WBV + BFR, and MVC + BFR significantly improve jump height and time in air but not jump power.
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Affiliation(s)
- Ryan M Miller
- Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
| | - Victoria M Keeter
- Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
| | - Eduardo D S Freitas
- Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
| | - Aaron D Heishman
- Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
| | - Allen W Knehans
- Department of Nutritional Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Debra A Bemben
- Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
| | - Michael G Bemben
- Department of Health and Exercise Science, University of Oklahoma, Norman, Oklahoma
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Miller RM, Heishman AD, Freitas EDS, Bemben MG. Comparing the Acute Effects of Intermittent and Continuous Whole-Body Vibration Exposure on Neuromuscular and Functional Measures in Sarcopenia and Nonsarcopenic Elderly Women. Dose Response 2018; 16:1559325818797009. [PMID: 30202250 PMCID: PMC6125857 DOI: 10.1177/1559325818797009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 07/26/2018] [Accepted: 07/31/2018] [Indexed: 11/16/2022] Open
Abstract
This investigation examined the acute effects of continuous whole-body vibration (CWBV) and intermittent whole-body vibration (IWBV) on neuromuscular and functional measures in women with sarcopenia and nonsarcopenic women. Continuous whole-body vibration was one 6-minute exposure, while IWBV consisted of six 60-second exposures to rest intervals (30 Hz, 2-4 mm amplitude). Factorial analyses revealed group × exposure × time interactions for jump height (JH; F = 10.8, P = .002), grip strength (GS; F = 15.5, P < .001), timed up and go test (F = 11.7, P = .002), and sit and reach test (S&R; F = 9.7, P = .004). Both JH and GS significantly improved post-WBV in women with sarcopenia (P < .001), with post-IWBV significantly greater (P < .001) than post-CWBV. Timed up and go test and S&R significantly improved post-IWBV in both the groups (P < .001) with post-IWBV significantly better than post-CWBV (P < .001). Bench press power at 20% one repetition maximum (1RM) revealed an exposure × time interaction (F = 4.6, P = .04) illuminating that IWBV significantly improved muscular power (P < .001). Bench press power at 40% 1RM revealed group × exposure (F = 6.4, P = .016) and exposure × time interactions (F = 5.8, P = .022). Individuals with sarcopenia significantly increased power output (P < .001) post-IWBV which was significantly greater than post-CWBV (P = .037). Bench press power at 60% 1RM revealed an exposure × time interaction (F = 8.6, P = .006), indicating that power was significantly improved post-IWBV (P = .027) and decreased post-CWBV. Berg Balance scale revealed a time main effect (F = 6.64, P = .015), and pain discomfort was significantly lower post-IWBV. These data indicate IWBV may provide a more efficacious exposure pattern in older women when compared to CWBV.
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Affiliation(s)
- Ryan M. Miller
- Neuromuscular Laboratory, Department of Health and Exercise Science,
University of Oklahoma, Norman, OK, USA
| | - Aaron D. Heishman
- Neuromuscular Laboratory, Department of Health and Exercise Science,
University of Oklahoma, Norman, OK, USA
| | - Eduardo D. S. Freitas
- Neuromuscular Laboratory, Department of Health and Exercise Science,
University of Oklahoma, Norman, OK, USA
| | - Michael G. Bemben
- Neuromuscular Laboratory, Department of Health and Exercise Science,
University of Oklahoma, Norman, OK, USA
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Heishman AD, Miller RM, Freitas ED, Kaur J, Galletti BA, Koziol KJ, Bemben MG. Countermovement Jump Reliability when Performed With and Without an Arm Swing in NCAA Division 1 Basketball Players. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000538208.39002.8d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Miller RM, Freitas ED, Heishman AD, Kaur J, Koziol KJ, Galletti BA, Bemben MG. The Effects of Gender and Training Status on Optimal Loads for Developing Muscular Power. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000538600.56367.56] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Heishman AD, Curtis MA, Saliba E, Hornett RJ, Malin SK, Weltman AL. Noninvasive Assessment of Internal and External Player Load: Implications for Optimizing Athletic Performance. J Strength Cond Res 2018; 32:1280-1287. [DOI: 10.1519/jsc.0000000000002413] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Koziol KJ, Miller RM, Freitas EDS, Heishman AD, Kaur J, Bemben MG. Test-retest Reliability of Velocity Assessments for Free Weight and Machine Exercises. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000538206.31379.7b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Freitas E, Frederiksen C, Miller RM, Heishman AD, Kaur J, Koziol KJ, Galletti BAR, Bemben DA, Bemben MG. The Effects Of Whole-body Vibration On Posture, Balance, And Mobility In Women With Multiple Sclerosis. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000535115.77076.a1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Stone B, Miller RM, Heishman AD, Campbell JA, Kellawan JM. Fitness and Performance Responses to Load Carriage Specific Training in Reserved Officers Training Corps. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.855.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Brandon Stone
- Health and Exercise ScienceUniversity of OklahomaNormanOK
| | - Ryan M. Miller
- Health and Exercise ScienceUniversity of OklahomaNormanOK
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Heishman AD, Curtis MA, Saliba EN, Hornett RJ, Malin SK, Weltman AL. Comparing Performance During Morning vs. Afternoon Training Sessions in Intercollegiate Basketball Players. J Strength Cond Res 2017; 31:1557-1562. [PMID: 28538305 PMCID: PMC5441887 DOI: 10.1519/jsc.0000000000001882] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Heishman, AD, Curtis, MA, Saliba, EN, Hornett, RJ, Malin, SK, and Weltman, AL. Comparing performance during morning vs. afternoon training sessions in intercollegiate basketball players. J Strength Cond Res 31(6): 1557–1562, 2017—Time of day is a key factor that influences the optimization of athletic performance. Intercollegiate coaches oftentimes hold early morning strength training sessions for a variety of factors including convenience. However, few studies have specifically investigated the effect of early morning vs. late afternoon strength training on performance indices of fatigue. This is athletically important because circadian and/or ultradian rhythms and alterations in sleep patterns can affect training ability. Therefore, the purpose of the present study was to examine the effects of morning vs. afternoon strength training on an acute performance index of fatigue (countermovement jump height, CMJ), player readiness (Omegawave), and self-reported sleep quantity. We hypothesized that afternoon training sessions would be associated with increased levels of performance, readiness, and self-reported sleep. A retrospective analysis was performed on data collected over the course of the preseason on 10 elite National Collegiate Athletic Association Division 1 male basketball players. All basketball-related activities were performed in the afternoon with strength and conditioning activities performed either in the morning or in the afternoon. The average values for CMJ, power output (Power), self-reported sleep quantity (sleep), and player readiness were examined. When player load and duration were matched, CMJ (58.8 ± 1.3 vs. 61.9 ± 1.6 cm, p = 0.009), Power (6,378.0 ± 131.2 vs. 6,622.1 ± 172.0 W, p = 0.009), and self-reported sleep duration (6.6 ± 0.4 vs. 7.4 ± 0.25 p = 0.016) were significantly higher with afternoon strength and conditioning training, with no differences observed in player readiness values. We conclude that performance is suppressed with morning training and is associated with a decrease in self-reported quantity of sleep.
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Affiliation(s)
- Aaron D Heishman
- Departments of 1Kinesiology; 2Athletics, Basketball Strength and Conditioning; and 3Athletics, Sports Medicine, University of Virginia, Charlottesville, Virginia; and 4Division of Endocrinology and Metabolism, University of Virginia, Charlottesville, Virginia
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