Training Corps Cadets Research Articles

Long Duration Load Carriage Performance Is Associated With Army Combat Fitness Test Scores and Fat-Free Mass.

Sax van der Weyden, M, Merrigan, JJ, and Martin, J. Long duration load carriage performance is associated with Army Combat Fitness Test scores and fat free mass. J Strength Cond Res 38(11): 1959-1966, 2024-A common occupational task for the military is carrying heavy loads for long periods of time. The US Army has set a time standard of 3 hours to complete a 19.31-km march with a 15.9-kg ruck sack for combat arms training and specialty schools. The purpose of this study was to identify characteristics associated with 19.31-km foot march completion rates in Reserve Officers' Training Corps (ROTC) Cadets. Demographics, anthropometrics/body composition, Army Combat Fitness Test (ACFT) scores, and vertical countermovement jump (CMJ) data were collected on 65 ROTC cadets who conducted a 19.31-km foot march. Independent t tests and Mann-Whitney U tests compared variables between those who did and did not finish the foot march in less than 3 hours. Logistic regressions were used to calculate the odds of completing the foot march using military experience, fat-free mass, ACFT, and CMJ outcomes. Cadets who met the 3 hours standard had lower body fat percent, greater fat-free mass, higher ACFT scores, and higher CMJs than those who did not. In addition, for every one point increase in ACFT score and 1-kg increase in fat-free mass, a cadet's chances of finishing the foot march increased by 6.1 and 24%, respectively. When analyzing ACFT events separately, 2-mile run was the only significant variable, and for every 1 point increase in 2-mile run score, a cadet's chances of finishing the foot march increased by 9%. Thus, aspiring and current soldiers should train to improve aerobic fitness and build muscle mass in preparation for load carriage requirements.

Intensive, Real-Time Data Collection of Psychological and Physiological Stress During a 96-Hour Field Training Exercise at a Senior Military College: Feasibility and Acceptability Cohort Study.

Poor physical fitness, stress, and fatigue are factors impacting military readiness, national security, and economic burden for the United States Department of Defense. Improved accuracy of wearable biosensors and remote field biologic sample collection strategies could make critical contributions to understanding how physical readiness and occupational stressors result in on-the-job and environment-related injury, sleep impairments, diagnosis of mental health disorders, and reductions in performance in war-fighters. This study aimed to evaluate the feasibility and acceptability of intensive biomarker and biometric data collection to understand physiological and psychological stress in Army Reserved Officer Training Corps cadets before, during, and after a 96-hour field training exercise (FTX). A prospective pilot study evaluated the feasibility and acceptability of multimodal field data collection using passive drool saliva sampling, sweat sensors, accelerometry, actigraphy, and photoplethysmography. In addition, physical fitness (Army Combat Fitness Test), self-reported injury, and psychological resilience (Brief Resilience Scale) were measured. A total of 22 cadets were included. Two were lost to follow-up due to injury during FTX, for a retention rate of 91%. Assessments of performance and psychological resilience were completed for all remaining participants, resulting in 100% testing adherence. All participants provided saliva samples before the FTX, with 98% adherence at the second time point and 91% at the third. For sweat, data collection was not possible. Average daily wear time for photoplethysmography devices was good to excellent, meeting a 70% threshold with data collected for ≥80% of person-days at all time points. Of the participants who completed the FTX and 12 completed a post-FTX acceptability survey for a response rate of 60%. Overall, participant acceptance was high (≥80%) for all metrics and devices. This study demonstrates that wearable biosensors and remote field biologic sample collection strategies during a military FTX have the potential to be used in higher stakes tactical environments in the future for some, but not all, of the strategies. Overall, real-time biometric and biomarker sampling is feasible and acceptable during field-based training and provides insights and strategies for future interventions on military cadet and active-duty readiness, environmental stress, and recovery.

The Effect Of Concussion History On The Vestibular System And Postural Stability In Reserve Officers' Training Corps Cadets

The Effect Of Concussion History On The Vestibular System And Postural Stability In Reserve Officers' Training Corps Cadets

Dietary Knowledge, Habits, and Barriers Among Reserve Officer Training Corps Cadets

Dietary Knowledge, Habits, and Barriers Among Reserve Officer Training Corps Cadets

Movement Quality Assessment of Army Reserve Officers' Training Corps Cadets: A Report of Validity and Normative Data.

Movement quality screening in early-career military populations, like Army Reserve Officers' Training Corps (AROTC) cadets, could decrease the negative impact of musculoskeletal injury observed within the military. Movement quality screening techniques should be valid before being pursued in the field. Normative data describing movement quality of AROTC cadets are also needed. Therefore, the aims of this study were to determine criterion validity of several movement quality assessments and report normative jump-landing kinematics of AROTC cadets. This cross-sectional research was approved by the Institutional Review Board. As part of a larger study, 20 AROTC cadets (21.3 ± 3.4 years; 1.7 ± 0.1 m; 73.8 ± 14.8 kg) had 3-dimensional (3D) and 2-dimensional (2D) kinematic data collected simultaneously while performing a jump-landing task. Variables of interest were 3D hip and knee sagittal, frontal, and transverse joint angles at maximum knee flexion. An experienced rater calculated sagittal and frontal 2D joint angles at maximum knee flexion. Averages of 2D and 3D angles were calculated to describe normative data and for further data analysis. Bivariate correlations between 3D and 2D variables were used to determine criterion validity. Moderate correlations were found between 2D and 3D hip frontal plane angles (P = .05, r =-0.33), 2D and 3D knee sagittal plane angles (P = .04, r = 0.35), and 2D and 3D knee frontal plane angles (P = .03, r = -0.36). Normative values of knee and hip kinematics demonstrated averages of 17.58° of knee adduction, 16.48° of knee external rotation, 11.57° of hip abduction, 10.76° of hip internal rotation, and 103.47° of knee flexion during landings. However, ranges demonstrated that landing patterns vary within AROTC cadets. The normative values of 3D jump-landing kinematic data indicate that movement quality varies greatly within AROTC cadets, and some cadets display potentially injurious movements. Therefore, screening movement quality could be beneficial to determine musculoskeletal injury risk in AROTC cadets. Based on the correlations discovered in this study, we recommend the 2D techniques used in this study be researched further as they may serve as alternatives to expensive, timely 3D techniques that could be better utilized in military environments.

Army Combat Fitness Test Scores Moderate Cognitive Function Improvements After a Ruck March: A Hierarchical Linear Model Approach.

Sax van der Weyden, M, Merrigan, JJ, Newman, K, Hahn, J, and Martin, J. Army Combat Fitness Test scores moderate cognitive function improvements after a ruck march: A hierarchical linear model approach. J Strength Cond Res 38(7): 1314-1320, 2024-Heavy load carriage is a common task for military personnel and can lead to undue physical and mental fatigue. The purpose of this study was to assess effects of load carriage on cognitive function (CF) and the role individual characteristics play in CF responses. Anthropometrics/body composition, demographics, and Army Combat Fitness Test (ACFT) scores were gathered from 47 Reserve Officers' Training Corps cadets. Cadets' CF was assessed through the concentration task grid (CTG) before (preruck), immediately after (postruck), and 3 weeks after (follow-up) a 16.09- to 19.31-km ruck march. Hierarchical linear modeling was used, with α < 0.05. The final model revealed growth, or improvement, in CF from preruck to postruck with growth decelerating, but still improved, at follow-up. The load carriage bout improved CF in most cadets, with average growth from 5.67- to 7.20-grid squares found. However, postruck CF did not return to the same level as a controlled follow-up (9.69). Sex (2.46, female), familiarity with the CTG (1.99), ACFT total scores (0.009), and relative ruck mass (-0.09) were all significant predictors of postruck CF. Army Combat Fitness Test scores (0.008) were also significant predictors of the slope between preruck and postruck, such that an ACFT score 59 points above average would result in a 1-grid square greater improvement in CF postruck. The significance of ACFT scores, lower relative ruck mass, and familiarization highlights the importance physical and mental preparation for desirable CF outcomes after occupational tasks.

Spiritual Fitness, Spiritual Readiness, and Depressive Symptoms in Reserve Officers' Training Corps Cadets.

Over the past decade, the United States military has taken an interest in addressing soldiers' spiritual fitness and readiness to help improve their mental health and resiliency. Similar efforts have not been applied within the Reserve Officers' Training Corps (ROTC) population despite the mental health challenges these college students experience. To examine spiritual readiness, spiritual fitness, and depressive symptoms in ROTC cadets. Cross-sectional study. Web-based survey. We recruited ROTC cadets from 1 large southeastern university (n = 91 of 315, 28.9% response rate). The ROTC cadets (age = 21 ± 3 years; men = 68, 74.7%; women = 22, 24.2%; missing = 1, 1.1%) were mainly classified as juniors (n = 30, 33.0%) and in Army ROTC (ROTC branch: Army = 69, Air Force = 20, Navy = 2). The survey contained 3 validated instruments used to assess spiritual fitness (the Spiritual Fitness Inventory [SFI]), spiritual readiness (Spiritual Wellbeing Scale [SWBS]), and mental health via depressive symptoms (Patient Health Questionnaire [PHQ-9]). Results were analyzed using descriptive statistics and nonparametric Mann-Whitney U tests to compare belief in God or gods with the dependent measures. A Pearson correlation was calculated to assess the relationship between the SWBS score and PHQ-9 data. In total, 85.7% (n = 78/91) of ROTC cadets stated that they believed in God or gods. Overall, the cadets were considered to have average spiritual fitness (mean = 75.04 ± 14.89) and moderate spiritual well-being (mean = 90.46 ± 18.09). The average PHQ-9 score was 4.22 ± 5.25. Individuals who believed in God or gods had higher spiritual readiness (believer = 94.44 ± 16.10, nonbeliever = 67.00 ± 9.35; P ≤ .01). No statistically significant differences were noted for symptoms of depression (believer = 3.38 ± 4.90, nonbeliever = 6.60 ± 6.90; P = .143) or spiritual fitness (believer = 76.12 ± 14.78, nonbeliever = 64.40 ± 12.68; P = .054) in ROTC cadets based on belief status. Overall, the ROTC cadets had moderate to average spiritual fitness and readiness, with typical depressive symptoms scores. Spiritual readiness was different for those who believed in God or gods, and existential well-being was significantly correlated with depressive symptoms.

Relationships Between Anthropometric Measures and Body Composition With Individual ACFT Event Performance Among Army Reserve Officers' Training Corps Cadets.

Thompson, MB, Lawson, DJ, Orr, RM, Lockie, RG, and Dawes, JJ. Relationships between anthropometric measures and body composition with individual ACFT event performance among army reserve officers' training corps cadets. J Strength Cond Res 38(4): 749-754, 2024-The U.S. military commonly uses body composition as an indicator of a soldier's potential to meet the physical demands required of their occupation. The purpose of this study was to determine whether significant relationships existed between select body composition variables and Army Combat Fitness Test (ACFT) performance among a cohort of university Army Reserve Officers' Training Corps (ROTC) cadets. Twenty-six male (20.4 ± 1.6 years, 81.8 ± 8.5 kg, 178.3 ± 7.8 cm) and 12 female (19.9 ± 1.4 years, 64.2 ± 6.7 kg, 161.9 ± 4.9 cm) cadets voluntarily participated in this study. Body composition was measured using bioelectrical impedance analysis, and ACFT event scores were recorded by the cadre using the U.S. Army standard protocol and provided to the investigators. Pearson's correlations were used to identify relationships between body composition variables and ACFT event performance with an alpha level of p ≤ 0.05. Moderate to strong relationships were observed between total body water, dry lean mass, lean body mass, skeletal muscle mass, body fat mass (FM), and body fat percentage and all event scores for the sample as a whole. Body mass index showed weak to moderate significant positive relationships with hand-release push-up and maximum hexagonal bar deadlift in the sample as a whole. No relationships were observed in the men of this sample. All body composition variables showed moderate, nonsignificant relationships with at least 1 ACFT event within the women of this sample. Considering the findings of this study, a multitude of variables could be useful to assess ROTC cadets as predictors for ACFT performance. Reserve Officers' Training Corps programs should emphasize attaining and maintaining functional lean mass, whereas reducing nonfunctional body mass (i.e., excess FM) among cadets to enhance health and performance across the occupational life span.

Influence of Body Composition, Load-Velocity Profiles, and Sex-Related Differences on Army Combat Fitness Test Performance.

Boffey, D, DiPrima, JA, Kendall, KL, Hill, EC, Stout, JR, and Fukuda, DH. Influence of body composition, load-velocity profiles, and sex-related differences on army combat fitness test performance. J Strength Cond Res 37(12): 2467-2476, 2023-The Army Combat Fitness Test (ACFT) became the U.S. Army's mandatory physical fitness test in April of 2022. The purpose of this study was to determine the relationship between ACFT performance and both body composition and velocity profiles and to determine sex differences for these variables. Data were collected at 2 timepoints 4 months apart, from male (n = 55) and female (n = 17) Army Reserve Officers' Training Corps (ROTC) cadets. Body composition was assessed with a bioelectrical impedance spectroscopy device, and cadets completed a hex bar deadlift load-velocity profile (LVP) and ACFT on separate days. Stepwise multiple regressions were used to explain the amount of variance in ACFT total score and individual event performance. Significance for statistical tests was defined as an alpha level of p ≤ 0.05. Muscle mass and body fat percentage accounted for 49% of shared variance of total ACFT score, and deadlift maximal power and maximal velocity accounted for 67% of shared variance of total ACFT score. The 3 repetition maximum deadlift, standing power throw, hand-release push-up, and sprint-drag-carry events favored cadets with more muscle mass, whereas the leg tuck was influenced by the body fat percentage and the 2-mile run was affected by fat mass. Sex had greater predictive capability for the 2-mile run than body composition. Men outperformed women on all individual events, with the greatest differences on standing power throw and sprint-drag-carry. It is recommended that Army ROTC cadets taking the ACFT maximize lower-body power production and increase muscle mass.

Examining the Relationship Between Healthy Eating Score and ACFT Performance in Reserve Officer Training Corps (ROTC) Cadets

Introduction: Reserve Officers’ Training Corps (ROTC) cadets must maintain military readiness by meeting physical fitness standards and passing the newly implemented Army Combat Fitness Test (ACFT). Prior research established a positive relationship between nutrition and performance, however the relationship between diet and ACFT performance has not been studied. This study aimed to examine the relationship between diet quality and ACFT performance in cadets. Methods: ROTC cadets (n=52) completed the Healthy Eating Score-7 (HES-7) and an ACFT. HES-7 is a proxy for diet quality and scored between 0 and 35. The ACFT is a measure of performance with a maximum score of 600. The association of HES-7 score with total ACFT score was evaluated using multiple linear regression analysis. Models adjusted for body mass and physical activity as potential confounders. Statistical significance was set at p ≤ 0.05. Results: The average scores for ACFT and HES-7 were 485.5±71.5 and 19.7±5.2 points, respectively. There was no significant association between HES-7 and ACFT (r=-0.213, p=0.088). The final regression model included HES, physical activity time, and body mass, and explained 10.4% of the variance in the ACFT score. Conclusions: Favorable dietary habits assessed by HES-7 were not associated with physical performance.

Comparing Body Composition Methods forAir Force Reserve Officers' Training Corps Cadets.

In special populations, such as Reserve Officers' Training Corps (ROTC) cadets, body composition is used not only as a predictor of fitness but for additional purposes such as qualification for enlistment, load carriage, and duty fulfillment. Body mass index (BMI) is the initial measurement recorded and is considered a representation of health and physical performance capabilities. Personnel exceeding threshold values of body weight based upon their height measurement are typically further evaluated using a circumference-based method that predicts the cadets' percent body fat. Military personnel who fail to meet these body composition standards may be penalized by being denied specific positions or promotions or risk being relieved from all military duties. In order to differentiate and accurately assess the components that constitute body composition, other methods of measuring body composition that provide greater accuracy should be explored. The purpose of this study was to compare multiple body composition methods, including the military's method of circumference-based measurement, in order to identify a suitable method for Air Force ROTC programs. Participants were recruited from an Air Force ROTC Detachment at a large university in the Midwest United States. Anthropometric (height and weight) and body composition measurements (air displacement plethysmography [ADP], bioelectrical impedance analysis, skinfolds, and circumferences) were collected for each participant. A repeated-measure analysis of variance was used to compare body composition measurement methods. A Bonferroni adjustment was utilized for multiple comparisons. BMI and circumference results were displayed as a percentage of compliance according to Air Force Instruction guidelines. The university institutional review board approval was established to ensure that the design of this study protected the rights of the participants. Twenty-four (21 males and 3 females) participants completed the study. A significant difference between skinfolds and bioelectrical impedance analysis occurred (P = .025). There were no other significant differences identified between other methods of body composition. Using the BMI and circumference compliant/non-compliant scale listed in the Air Force Instruction guidelines, a greater number of cadets fell into the non-compliant category according to BMI (n = 7) versus circumferences (n = 1). The circumference-based method underestimated body fat compared to the "gold standard" ADP. The findings from this investigation suggest that the circumference-based method can appropriately provide accurate body composition results among Air Force ROTC cadets. Results also determined that the military's circumference-based method underestimated body fat compared to the "gold standard" ADP. Although circumference-based measurements might be efficient for use in larger populations, Air Force ROTC programs should evaluate other methods of measuring body composition to best fit the needs of individual cadets. Further research should be conducted to identify body composition methods that are easy to implement and provide accurate results at the individual level.

Male Army ROTC Cadets Fail to Meet Military Dietary Reference Intakes and Exhibit a High Prevalence of Low Energy Availability and Poor Sleep Quality.

The purpose of this study was to assess the dietary habits, prevalence of low energy availability (EA), and sleep quality in a cohort of male army Reserve Officer Training Corps (ROTC) cadets, and to investigate the relationship between EA and sleep quality as well as EA and various body composition variables that are important for tactical readiness. Thirteen male army ROTC cadets (22.2 ± 4.1 yrs; BMI: 26.1 ± 2.3) had their EA and body composition assessed using diet and exercise records alongside bioelectrical impedance analysis. Cadets also completed a validated sleep questionnaire. Sixty-two percent of participants presented with clinically low EA (<30 kcal/kg fat-free mass [FFM]) and none met the optimum EA threshold (≥45 kcal/kg FFM). Dietary analysis indicated that 15%, 23%, 46%, 23%, and 7% of cadets met the Military Dietary Reference Intakes (MDRI) for calories, carbohydrates, protein, fat, and fiber, respectively. Additionally, 85% of cadets exhibited poor sleep quality. Significant associations between EA and fat mass/percent body fat were shown (p < 0.05). There was, however, no statistically significant correlation between EA and sleep quality. The present study found a high prevalence of low EA and sleep disturbance among male army ROTC cadets and that many were unable to meet the MDRIs for energy and macronutrient intake. Further, low EA was associated with higher percent body fat and fat mass but not sleep quality.

Army Combat Fitness Test Relationships to Tactical Foot March Performance in Reserve Officers' Training Corps Cadets.

The Army Combat Fitness Test (ACFT), consisting of deadlift, standing power throw, hand release push-up, sprint-drag-carry, leg tuck or plank, and 2-mile run, is the United States Army's new fitness test. The ACFT is designed to measure multiple fitness components required to perform combat tasks. One critical task is the tactical foot march (TFM), where soldiers cover long distances while carrying loads comprised of mission-essential equipment. As the ACFT is meant to predict soldier task performance, determining the relationships between the ACFT and the TFM is important. Data from 29 cadets (♂ = 20, ♀ = 9) from one university Reserve Officers' Training Corps program were analyzed. The ACFT was recorded in raw and scaled scores. The TFM was performed over 6.44 km, with time recorded. Cadets carried a 15.88-kg rucksack, fighting load carrier, 3-L hydration pack, and replica M4 carbine. Independent samples t-tests evaluated ACFT and TFM between-sex differences. Partial correlations, controlling for sex, determined ACFT event and TFM relationships. Male cadets outperformed females in all ACFT tasks (p ≤ 0.039), except the push-up. ACFT total score, leg tuck, 2-mile run, and sprint-drag-carry showed large correlations with the TFM (r = ±0.463-0.531, p ≤ 0.026). Aerobic and anaerobic capacity and upper body/trunk strength were important fitness components for cadet TFM performance.

Benefits and Barriers Associated With Intention to Participate in Injury Prevention Programs in Reserve Officers’ Training Corps Cadets

Identification of factors which may influence participation in exercise-related injury prevention programs within Reserve Officers’ Training Corps (ROTC) cadets is an important step in improving adoption and adherence rates. Therefore, the purpose of the study was to identify factors associated with intention to participate in an exercise-related injury prevention program within ROTC cadets. Theory of planned behavior scale perceived benefits (B = 3.65, η2 = .36, p = .001) and Health Belief Model Scale perceived benefits (B = 3.46, η2 = .31, p = .01) had a large positive association with intention to participate. Theory of planned behavior scale perceived barriers (B = −2.28, η2 = .37, p = .001) had a large negative association with intention to participate. Implementation strategies for exercise-related injury prevention programs may need to focus on the benefits and barriers of participation to increase adoption and adherence.

Chronotype and Social Jetlag Influence Performance and Injury during Reserve Officers' Training Corps Physical Training.

Sleep and circadian rhythms are critically important for optimal physical performance and maintaining health during training. Chronotype and altered sleep may modulate the response to exercise training, especially when performed at specific times/days, which may contribute to musculoskeletal injury. The purpose of this study was to determine if cadet characteristics (chronotype, sleep duration, and social jetlag) were associated with injury incidence and inflammation during physical training. Reserve Officers’ Training Corps (ROTC) cadets (n = 42) completed the Morningness/Eveningness Questionnaire to determine chronotype, and 1-week sleep logs to determine sleep duration and social jetlag. Salivary IL-6 was measured before and after the first and fourth exercise sessions during training. Prospective injury incidence was monitored over 14 weeks of training, and Army Physical Fitness Test scores were recorded at the conclusion. Chronotype, sleep duration, and social jetlag were assessed as independent factors impacting IL-6, injury incidence, and APFT scores using ANOVAs, chi-squared tests, and the t-test where appropriate, with significance accepted at p < 0.05. Evening chronotypes performed worse on the APFT (evening = 103.8 ± 59.8 vs. intermediate = 221.9 ± 40.3 vs. morning = 216.6 ± 43.6; p < 0.05), with no difference in injury incidence. Sleep duration did not significantly impact APFT score or injury incidence. Social jetlag was significantly higher in injured vs. uninjured cadets (2:40 ± 1:03 vs. 1:32 ± 55, p < 0.05). Exercise increased salivary IL-6, with no significant effects of chronotype, sleep duration, or social jetlag. Evening chronotypes and cadets with social jetlag display hampered performance during morning APFT. Social jetlag may be a behavioral biomarker for musculoskeletal injury risk, which requires further investigation.

Comparing Body Composition Methods For Air Force Reserve Officers' Training Corps Cadets

Comparing Body Composition Methods For Air Force Reserve Officers' Training Corps Cadets

Perceptions Of An Interactive Concussion Education Platform Among Reserve Officer Training Corps (ROTC) Cadets

Effective concussion educational intervention concerning the clinical presentation and the benefits of concussion care-seeking is essential to allow for timely identification and treatment of concussions among reserve officers’ training corps (ROTC) cadets. PURPOSE: Explore perceptions of a novel, interactive concussion education platform in ROTC cadets. METHODS: As a part of a larger study, participants viewed a theory-driven, decision-based, interactive concussion education intervention. The current study used a consensual qualitative research tradition grounded in phenomenology. 20 ROTC Cadets (7 males, 13 females; mean age 19.95 ± 1.96) were interviewed. Cadets were recruited via convenience sampling until data saturation was met. Semi-structured in-person interviews were transcribed verbatim. The interviews addressed platform perception. A four-person research team of novice and expert qualitative researchers coded data into themes and categories before meeting to attain consensus on coding accuracy and comprehensiveness. An internal auditor reviewed results. RESULTS: Interviews highlighted two key themes concerning the educational platform: 1) platform impressions and 2) education considerations. The platform impression theme included categories for visual content, verbal content, decision point, general impressions, perceived benefits, and enhancements. Cadets discussed the relatable and straightforward visual content portraying training scenarios. The platform was described as a catalyst to reinforce previously attained concussion knowledge and influence concussion knowledge in those newly exposed. Educational considerations included categories considering implementation, source, channel, and message. Cadets discussed the need and desire for concussion education to be captivating and military specific. The interactive component and military context of the platform allowed them to relate to the material in a way conducive to learning. CONCLUSION: Findings suggest that interactive education platforms that consider the ROTC specific audience are favored by cadets. This highlights that concussion education should be engaging and inclusive to foster buy-in from the targeted audience.

Army Combat Fitness Test Performance Sex Differences In Reserve Officer Training Corps Cadets

Army Combat Fitness Test Performance Sex Differences In Reserve Officer Training Corps Cadets

Anthropometrics Impact Army Combat Fitness Test Performance in Reserve Officer Training Corps Cadets.

Fitness is a vital component in military success. The Army is in the process of implementing a new assessment for soldier fitness, the Army Combat Fitness Test (ACFT). Success on the assessment is a major factor in job assignments and promotional opportunities. This generates questions related to modifiable (i.e., fitness and body composition) and non-modifiable (i.e., limb length and testing equipment) factors impacting performance. Currently, anthropometrics differences in ACFT performance have not been investigated. Thus, this study aimed to assess the impact of anthropometrics on ACFT performance in Reserve Officer Training Corps Cadets. Anthropometric measures and ACFT scores were collected from Reserve Officer Training Corps cadets (n = 105, age: 20.4 ± 2.4 years, body mass index: 25.0 ± 2.8 kg/m2, and M/F = 84/21). All ACFT events were evaluated by certified graders. Measurement locations were based on established anthropometric assessment standards and previous research (hand, lower arm, upper arm, upper leg, lower leg, and torso lengths). The study was approved by the Auburn University Institutional Review Board (protocol code #21-410). There were weak correlations between hand length and three-repetition maximum deadlift [0.393; P ≤ .001], standing power throw [0.399; P ≤ .001], sprint-drag-carry [-0.315; P = .002], and ACFT score [0.212; P = .035]. The lower leg had weak correlations with standing power throw [0.249; P = .013], sprint-drag-carry [-0.215; P = .033], and ACFT score [0.213; P = .034]. Hand and lower leg length impacted individual event performances when comparing shortest and longest limb lengths [all P values <.05]. Hand and lower leg length significantly impact ACFT performance. These results present practical information to individuals responsible for developing protocols and scoring for the ACFT. Reassessment of events and the equipment utilized are warranted to assure that event performance is not hindered by a non-modifiable factor that is not representative of fitness or occupational demands. Future work should investigate how different trap-bar and kettlebell handle sizes, as well as medicine ball sizes, impact performance on the ACFT.

How Does Enlistment Motivation Shape Organizational Commitment? The Role of Career Identity and Organizational Support.

This study, based on the integrative model of commitment and motivation and organizational support theory, examined the mechanism of intrinsic and extrinsic enlistment motivation on three facets of organizational commitment. A three-wave field questionnaire survey was conducted among 1606 Reserve Officers' Training Corps cadets from Chinese universities. The results showed that both intrinsic and extrinsic motivation positively predicted affective commitment, normative commitment, and continuous commitment. The positive effect of intrinsic motivation was stronger than extrinsic motivation. However, the interactive effect of intrinsic and extrinsic motivation negatively predicted the three aspects of organizational commitment. Career identity mediated all the direct effects above. Moreover, organizational support moderated the effects of intrinsic and extrinsic motivation on career identity. When organizational support was low, the positive effect of intrinsic motivation on career identity was stronger; whereas, when organizational support was high, the positive effect of extrinsic motivation on career identity was stronger. Furthermore, extrinsic motivation and organizational support jointly moderated the effect of intrinsic motivation on career identity and the mediating effects between intrinsic motivation and the three facets of organizational commitment. Specifically, when extrinsic motivation and organizational support were low, the direct and mediating effects above were stronger.