Bert H Jacobson

Oklahoma State University | Oklahoma State · School of Applied Health and Educational Psychology

Moghaddam, M, Cervantes, M, Cheshier, B, and Jacobson, BH. Sprint interval training on stationary air bike elicits cardiorespiratory adaptations while being time-efficient. J Strength Cond Res 37(9): 1795-1801, 2023-Sprint interval training (SIT) refers to a set of brief intermittent exercises that are performed at maximal intensity. This study com...

The COVID-19 pandemic prompted the expectation of facemasks in fitness facilities during exercise. However, the physiological and perceptual responses of wearing a facemask during exercise has not been fully investigated. The purpose of this study was to determine the effect of facemasks on selected physiological and subjective variables during exe...

Objective: The purpose of this study was to compare the firmness of used mattress coil springs from the areas bearing greatest body weight versus areas subjected to little compression. Methods: Weight-bearing springs (WBS) extracted from the center of the mattresses (N = 32), and non-weight-bearing springs (NWBS) extracted from the head/foot wer...

Jacobson, BH, Dawes, J, Smith, D, and Johnson, Q. Kinanthropometric characteristic comparisons of NCAA Division I offensive and defensive linemen spanning eight decades. J Strength Cond Res XX(X): 000-000, 2021-College football players have gained body mass, stature, and speed since the inception of the game. Of particular note is the body mass gai...

Training masks (TMs), marketed as simulated altitude training devices, suggest increased workout capacity, intensity tolerance and recovery. The claim is that the training mask improves respiratory power and breathing mechanics by strengthening the respiratory muscles through breathing resistance provided by the TM. The aim of this study was to com...

There is evidence to suggest that aquatic plyometric training (APT) may be an effective and safer alternative to traditional land-based plyometric training (LPT) when training to increase jump performance. The aim of this review was to critically examine the current literature regarding the effects of APT vs. LPT on jump performance in athletic pop...

BACKGROUND: Bar velocity has been proved to accurately predict performance in several exercises. OBJECTIVE: To estimate the total number of repetitions during the NFL-225 Bench Press Test (NFL-225) based on bar velocity in collegiate football players. METHODS: Forty-six NCAA Division I football players performed as many bench press repetitions as p...

Introducing resistance training to an initially untrained population induces rapid, early strength increases due to neural adaptations and are thereafter increased due to morphological adaptations within the musculotendinous unit. However, transcranial direct current stimulation (tDCS) is a method of neuromodulation that has been speculated to elic...

Background: High-intensity intermittent training (HIIT) has increased in popularity due to being time-efficient mode of exercise. Previous HIIT studies have mainly focused on percentage of fat loss, fat mass loss, and weight loss. However, enhancing muscle protein synthesis induced by HIIT that results in muscular morphological adaptations is a po...

Delayed onset muscular soreness (DOMS) occurs following unaccustomed, strenuous activity and a variety of attempts have been used to reduce or prevent the discomfort and pain of DOMS. This study examined the effect of oral gamma globulin protein (IgY) on post-exercise creatine kinase (CK), C-reactive protein (CRP), and DOMS. In a randomized, double...

Police officers may be required to perform dynamic movements such as running, jumping, and lunging as part of their duties. Early identification of poor movement patterns in this population may mitigate injury risks associated with these dynamic movements.

Bayliff, GE, Jacobson, BH, Moghaddam, M, and Estrada, C. Global positioning system monitoring of selected physical demands of NCAA Division I football players during games. J Strength Cond Res 33(5): 1185-1191, 2019-Global positioning system (GPS) tracking of athletes in selected sports is a new innovation into obtaining comprehensive data regardin...

Moghaddam, M, Estrada, CA, Muddle, TWD, Magrini, MA, Jenkins, NDM, and Jacobson, BH. Similar anaerobic and aerobic adaptations after 2 high-intensity interval training configurations: 10 s:5 s vs. 20 s:10 s work-to-rest ratio. J Strength Cond Res XX(X): 000-000, 2019-This study compares the effects of 2 high-intensity interval training (HIIT) confi...

Falls by the elderly are preceded by muscle weakness and deteriorated sensory input. The aim of this study was to compare the effectiveness of an independent static balance (ISB) protocol with the National Institute on Aging (NIA) supervised protocol for improving balance. Sixteen participants (age 88.6 ± 4.3 year) were randomly placed in the ISB o...

Energy drinks comprise a multibillion dollar market focused on younger, active and competitive individuals. Marketing includes claims of improved alertness and performance. The purpose of this study was to assess power (W) and velocity (m·s) of a simulated, isolated forehand stroke (FHS) and a counter movement vertical jump (CVJ) before and after i...

The popularity of energy drinks/shots have grown steadily over the years resulting in billions in dollars of sales annually. Energy drink marketing focus on improved performance and alertness and a reduction in fatigue. While caffeine comprises one of the ingredients, it is not fully known how the combination of the many remaining active ingredient...

Introduction: The combined-use of alcohol and energy drinks can increase risky behaviors increase motivations to drink, reduce perceptions of impairment, and reduce users’ perceived levels of intoxication. This study examined differences in drinking and driving behaviors among combined-users and those who consumed alcohol-only. Methods: College st...

The purpose of this study was to examine the efficacy of a ventilatory training mask to improve anaerobic and aerobic fitness in ROTC cadets. Seventeen ROTC cadets from a Midwest university completed pre- and post-assessments consisting of anthropometry, a 30-sec Wingate Anaerobic Test (WAnT), and a maximal aerobic capacity test (VO2max). A six wee...

-This study assessed the effect of energy shots on selected fine motor tasks. The participants were college-age male (n = 19; M age = 20.5 yr., SD = 0.7) and female (n = 21; M age = 21.1 yr., SD = 0.7) volunteers who were assessed on hand steadiness, choice reaction time, rotary pursuit, and simple reaction time. The energy shots group scored signi...

Research regarding whole body vibration (WBV) largely supports such training augmentation in attempts to increase muscle strength and power. However, localized biomechanical vibration has not received the same attention. The purpose of this study was to assess peak and average power before and after acute vibration of selected lower-body sites in D...

A recent study suggested that college students who combined alcohol and energy drinks were more likely than students who consumed only alcohol to drive when their blood alcohol concentration (BAC) was higher than the .08% limit and to choose to drive despite knowing they had too much alcohol to drive safely. This study sought to replicate those fin...

PURPOSE: The purpose of this study was to compare head coaches perceptions of players’ basketball abilities to that of assistant coaches. METHODS: NCAA Division 1 coaches (5 men’s coaches and 3 women’s coaches) were given visual analog scale (VAS) ratings to complete for their respective teams. Coaches were asked to rate their perceptions of each i...

INTRODUCTION: The increasing use of energy drinks (EDs) and prescription stimulants (Rx-stimulants) is an emerging public health concern. As suggested by addiction research, prevention programs can benefit individuals by focusing on their motivations and reasons for using substances. The purpose of this study was to explore the relationship between...

INTRODUCTION: The combined-use of alcohol and energy drinks is an emerging public health issue. This investigation examined group differences in drinking and driving as well as other high-risk behaviors among combined-users (CU) and students who consumed alcohol-only (AO). METHODS: College students (n=281) from a large mid-western university were...

Background: The purpose of this study was to examine energy drink usage patterns and to investigate the relationship between energy drink use and illicit use of prescription stimulants among college students. Methods: A sample of 605 undergraduate and graduate students (mean age ± SD: 21.96 ± 4.216) from a large midwestern university voluntarily...

Background: The combined-use of alcohol and energy drinks is an emerging public health issue. This investigation examined differences in drinking and driving behaviors among combined-users (CU) and participants who consumed alcohol-only (AO). Objectives: This study was specifically designed to investigate potential differences in drinker's perce...

Lower body strength and power are vital components of American football. Training of these variables involves several exercises with the squat being a primary exercise for hip and knee strength development. For offensive linemen the drive-block is a principal technique used in the running game and is designed to move the opponent in a particular di...

Typical strength training for football includes the squat and power clean and routinely measured variables include 1-RM squat and 1-RM power clean along with the vertical jump for power. However, little research exists regarding the association between the strength exercises and velocity of an actual on-the field performance. The purpose of this st...

Aim: Assessments of physical abilities are consistently and systematically done in American football in order to determine progress and effectiveness of conditioning programs. Typically, such assessment are recorded as absolute values without regard to the influence of body mass (BM) on the performance variables. Method: Test results were collec...

This study investigated the impact of body armor weight and load magnitude and distribution on the lower extremities during walking. Range of motion (ROM) was assessed while seven healthy, male, right-handed, military university students walked while wearing seven different garments of varying weights (0.06 kg, 9 kg, 18 kg, and 27 kg) and load dist...

Background: The purpose of this study was to examine energy drink (ED) usage patterns and to investigate the illicit use of prescription stimulants among college students. Methods: A sample of 267 undergraduate and graduate students (mean age of 22.48 among stimulant users) from a large midwestern university and its branch campus locations volun...

It is well documented that music can positively impact certain athletic performances with faster tempo music which may lead to improved outcomes. However, most research has investigated explosive or endurance activities, but the benefit of music in fine motor control situations are relatively unknown. Therefore, this exploratory study was to determ...

This study investigated the impact of weight and weight distribution of body armor and load carriage on static body balance and leg muscle function. A series of human performance tests were conducted with seven male, healthy, right-handed military students in seven garment conditions with varying weight and weight distributions. Static body balance...

Many athletes are asked to gain weight and even overeat to “bulk up” for their respective sport(s). In addictive behaviors, early exposure and habit formation during the brain’s developing years are highly predictive of continued problems later in life. As with commonly abused drugs, research indicates foods high in sugars and fat also cause large...

Unlabelled: This study investigated the impact of weight magnitude and distribution of body armour and carrying loads on military personnel's walking patterns and comfort perceptions. Spatio-temporal parameters of walking, plantar pressure and contact area were measured while seven healthy male right-handed military students wore seven different g...

Division I football players exemplify the greatest range in body mass of any modern team sport. Body mass may differ by over 80 kg between the various positions. Absolute muscular strength is typically greater in larger individuals, but such data does not allow for accurate comparisons. Therefore, in order to compare the performance indices of indi...

Delayed onset muscle soreness (DOMS) occurs following unaccustomed or intense bouts of exercise. The effects of DOMS peak at approximately 48 hours post-exercise and is DOMS is treated, albeit not highly successfully, in a variety of ways including the use of medication and therapeutic modalities. The objective of this study was to determine the ef...

The aim of this study was to determine the changes in anthropomorphism and performance over a four year eligibility career of American football players. A total of 92 offensive and defensive linemen and 64 skill (wide receivers and defensive backs) player observations were included in the analysis. Data from pre-season testing over a seven year per...

Aging is accompanied by a significant loss of strength which further contributes to loss of functional ability and a propensity for injury. The purpose of this study was to assess the effectiveness of power assisted exercises on muscle endurance and functional capacity of elderly participants following 12 weeks of supervised training. Elderly subje...

Current college football players appear to be larger in stature than those of the past, but few comparisons exist that have quantified such data over the span of over a half century. The purpose of this study was to compare anthropometric changes in college football players over a period of seven decades and to address the health implications assoc...

The purpose of this study was to determine the effect of 2 concentrations of topical, comfrey-based botanical creams containing a blend of tannic acid and eucalyptus to a eucalyptus reference cream on pain, stiffness, and physical functioning in those with primary osteoarthritis of the knee. Forty-three male and female subjects (45-83 years old) wi...

Int J Exerc Sci 4(2) :113-121, 2011. It is well established that an increased capacity of skeletal muscle to oxidize fatty acids can spare glycogen and delay the onset of fatigue in mild-to moderate-intensity exercise. The purpose of the following study was to examine the effect of LifeWave® energy patches on non-protein substrate utilization in Di...

To evaluate the effectiveness of independently conducted static balance exercises within a fall-safe environment in elderly participants engaging in independent training. Randomized two-group parallel controlled study. Retirement center, community dwelling. Subjects, 25 male and female volunteers (aged 82.6  ±  6.1 years; weight 69.9  ±  97  kg; he...

The purpose of this study was to assess sleep quality and comfort of participants diagnosed with low back pain and stiffness following sleep on individually prescribed mattresses based on dominant sleeping positions. Subjects consisted of 27 patients (females, n=14; males, n=13; age 44.8 yrs ± SD 14.6, weight 174 lb. ± SD 39.6, height 68.3 in. ± SD...

The purpose of the present study was to examine the differences in upper body power output among lineman and nonlineman division I collegiate football players and to examine the influence of 2 normalization procedures: (a) simple ratio scaling and (b) standardized allometric scaling. Ten lineman (mean +/- SD: age = 19.3 +/- 1.6 years; height = 187....

Nutrients, chemicals, and drugs may be applied sublingually to provide faster absorption. Sublingual absorption occurs when a substance comes in contact with the buccal mucosa, where it diffuses through a membrane of the dense capillaries. The purpose of this study was to assess the effectiveness of a sublingual, ergogenic product containing vitami...

This study compared sleep quality and stress-related symptoms between older beds (>/=5 years) and new bedding systems. A convenience sample of healthy subjects (women = 30; men = 29) with minor musculoskeletal sleep-related pain and compromised sleep, but with no clinical history of disturbed sleep, participated in the study. Subjects recorded back...

Claims of recently developed energy patches suggest that organic nanoscale biomolecular "antennas" produced by L and D-stereoisomers resonate at frequencies in unison with molecules in the cells inducing electron flow to assists in recruiting calcium ions, allowing greater muscle fiber recruitment during muscle contraction. The purpose of the study...

The purpose of this study was to compare sleep comfort and quality between personal and new bedding systems. A convenience sample (women, n=33; men, n=29) with no clinical history of disturbed sleep participated in the study. Subjects recorded back and shoulder pain, sleep quality, comfort, and efficiency for 28 days each in their personal beds (pr...

Plyometric training is a popular method by which athletes may increase power and explosiveness. However, plyometric training is considered a highly intense and potentially damaging activity particularly if practiced by the novice individual or if overdone. The purpose of this study was to compare vertical jump performance after land- and aquatic-ba...

This study compared balance, sway, and weight shift among golfers with different skill levels. Participants (N=52) were right-handed, male golfers between the ages of 18 and 55 and were divided into 3 groups based on their official handicap (Group 1= 0-9, Group 2= 10-16, Group 3 = 17+). Postural sway velocity was recorded unilaterally for each leg...

First responders are specialty teams who are trained to work in toxic environments to assess and diffuse the threat. They have to wear specially designed Personal Protective Ensembles (PPE) that is impermeable to liquids and gasses. Microclimate inside PPEs gets hot and humid, rapidly rendering it uncomfortable and often hazardous to work longer th...

To compare personal and new bedding systems between subjects with reported high and low base line sleep quality. A convenience sample of healthy subjects (women = 30; men = 29) with no clinical history of disturbed sleep participated in the study. Subjects recorded perceived back discomfort and stiffness, sleep quality and comfort, and sleep effici...