A pilot study on exertional tasks with physiological measures designed for the assessment of military concussion

Background: Guidelines for clinicians treating military concussion recommend exertional testing before return-to-duty, yet there is currently no standardized task or inclusion of an objective physiological measure like heart rate variability (HRV). Methodology & results: We pilot-tested two clinically feasible exertional tasks that include HRV measures and examined reliability of a commercially available heart rate monitor. Testing healthy participants confirmed that the 6-min step test and 2-min pushup test evoked the targeted physiological response, and the Polar H10 was reliable to the gold-standard electrocardiogram. Conclusion: Both tasks are brief assessments that can be implemented into primary care setting including the Polar H10 as an affordable way to access HRV. Additional research utilizing these tasks to evaluate concussion recovery can validate standardized exertional tasks for clinical use.

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Age Effects on Drivers’ Physiological Response to Workload

Proceedings of the Human Factors and Ergonomics Society Annual Meeting ◽

10.1177/1541931213601951 ◽

2017 ◽

Vol 61 (1) ◽

pp. 1886-1886 ◽

Cited By ~ 1

Author(s):

Carolina Rodriguez-Paras ◽

Sahinya Susindar ◽

Seulchan Lee ◽

Thomas K. Ferris

Keyword(s):

Heart Rate ◽

Physiological Response ◽

Low Frequency ◽

Task Demands ◽

Cognitive Resources ◽

Physiological Measures ◽

Physiological Indicators ◽

Performance Effects ◽

Manual Tasks ◽

Task Experience

Driving a vehicle requires performing a combination of cognitive, visual, and manual tasks, which depend on the sensory and cognitive resources allocated to the task. Physiological measures, such as heart rate measures, can be used to objectively detect when driving task demands approach and exceed a driver’s available resources, at which point there are also performance effects. As humans gain task experience and automatize aspects of it, fewer resources are demanded, which is reflected in physiological measures. However, physiological response also changes with age. This study sought to explore physiological response to different imposed workloads as a function of age and task experience. Results indicate that older drivers showed significantly increased low frequency and decreased high frequency spectral components of heart rate variability under secondary task loads. These findings raise new questions of how age should be considered when using physiological indicators to infer cognitive loading.

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ANALISIS BEBAN KERJA PETANI PADA PENGOPERASIAN KNAPSACK SPRAYER

Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) ◽

10.23960/jtep-l.v9i2.131-139 ◽

2020 ◽

Vol 9 (2) ◽

pp. 131

Author(s):

Raizummi Fil'aini ◽

Tri Novita Sari

Keyword(s):

Heart Rate ◽

Step Test ◽

Heart Rate Monitor ◽

Knapsack Sprayer

Pengendalian hama dan penyakit pertanian sering dilakukan secara kimia dengan menggunakan sprayer, salah satunya adalah sprayer semi-otomatis (knapsack sprayer). Sumber tenaga dan kendali pada knapsack sprayer berasal dari tenaga manusia. Operator harus memompa cairan yang terdapat pada tangki dan menyemprotkannya ke tanaman. Hal ini sering kali menyebabkan kelelahan otot di antara para pekerja. Oleh karena itu, dibutuhkan analisis terkait beban kerja petani saat pengaplikasian knapsack sprayer. Analisis beban kerja dilakukan dengan merekam denyut jantung petani laki-laki dan perempuan. Alat yang digunakan dalam pengukuran adalah Heart Rate Monitor (HRM). Pengukuran dilakukan dua kali, yaitu pengukuran saat kalibrasi dengan menggunakan metode step test dan pengukuran di lapang saat aktivitas penyemprotan. Tujuan dari penelitian ini adalah untuk menentukan beban kerja kualitatif (tingkat kejerihan) dan kuantitatif (konsumsi energi kerja). Hasil penelitian menunjukkan bahwa perempuan memiliki tingkat kejerihan yang lebih tinggi dibandingkan laki-laki, sedangkan konsumsi energi kerjanya tidak jauh berbeda. Dari hasil tersebut, dapat disimpulkan bahwa pengaplikasian knapsack sprayer di kecamatan Wedung lebih cocok dilakukan oleh laki-laki.

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Development of a Constant Rate Step Test to Assess Exertional Dyspnea in the Primary Care Setting in Patients with COPD Ashley Rycroft

Clinical & Investigative Medicine ◽

10.25011/cim.v30i3.1742 ◽

2007 ◽

Vol 30 (3) ◽

pp. 39

Author(s):

Sara Henophy ◽

Jacinthe Baril ◽

Éric Nadreau ◽

Jean Bourbeau ◽

François Maltais ◽

...

Keyword(s):

Primary Care ◽

Care Setting ◽

Primary Care Setting ◽

Audio Signal ◽

Step Test ◽

Metabolic System ◽

Exertional Dyspnea ◽

Constant Rate ◽

Rate Step ◽

Stage 1

Background: There is a need to develop a field test to evaluate exertional dyspnea in the primary care setting. This study examined the applicability of a 3-minute constant rate step test in patients with COPD. Methods: This test involved 4 stepping rates (18, 22, 26, 32 steps.min-1) equivalent to approximately 4.5, 5.3, 6.0, and 7.2 MET with the ultimate goal that in its final development, the assessment will be made a single stepping rate based on disease severity. Stable COPD patients (N= 43; 65 ± 6.5 years; FEV1= 49 ± 16% pred.; SpO2 (%) rest: 95± 2) were equipped with a portable Jaeger Oxycon Mobile® metabolic system and followed an audio signal for stepping up and down a single 20 cm step for 3 minutes. Borg dyspnea scores were obtained at the end each stepping bout. A 10-min rest was given between each stepping bout. Results: O f the 43 patients, 80% completed stages 1 and 2, 74 and 37% stages 3 and 4 while no patient of MRC class 4 or 5 (n=8) completed stage 1. Breathing frequency (breaths.min-1) spanned from 26.5± 4.1 to 39.0±6.4 but VT (L) remained unchanged (1.4± 0.3 vs. 1.5±0.4) from stage 1 to 4 while Borg scores were 3 ± 1, 4 ± 1, 5 ± 2, 6 ± 3 respectively and SpO2 (%) were 92±5, 91±4, 91±4 and 90±4. Conclusions: Preliminary findings indicate that a 3-min constant rate step test may present a feasible alternative to laboratory testing to assess exertional dyspnea in moderately severe COPD. In this population, a stepping rate of 26 steps·min-1 could be sustained by the majority of patients while producing a level of dyspnea potentially amenable to therapy.

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1499: The Prevalence of LUTS and Prostate Enlargement in the Primary Care Setting

The Journal of Urology ◽

10.1016/s0022-5347(18)31700-2 ◽

2007 ◽

Vol 177 (4S) ◽

pp. 494-495 ◽

Cited By ~ 1

Author(s):

Michael Naslund ◽

Alicia Gilsenan ◽

Kirk Midkiff ◽

Eric Wolford ◽

Aileen Bown ◽

...

Keyword(s):

Primary Care ◽

Care Setting ◽

Primary Care Setting ◽

Prostate Enlargement

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The Assessment of Fear of Flying: Elaboration and Validation of a Videotape as an Analogous Situation of a Flight1

European Journal of Psychological Assessment ◽

10.1027/1015-5759.13.2.118 ◽

1997 ◽

Vol 13 (2) ◽

pp. 118-130 ◽

Cited By ~ 4

Author(s):

Juan I. Capafóns ◽

Carmen D. Sosa ◽

Manuel Herrero ◽

Conrado Viña

Keyword(s):

Heart Rate ◽

Discriminant Analysis ◽

Post Treatment ◽

Subjective Measure ◽

Physiological Measures ◽

Personal Safety ◽

Metal Detector ◽

Fear Of Flying ◽

Situational Anxiety ◽

Treatment Measures

The results are presented for the validation of a videotape as an analogous situation for a flight. The video includes the most significant elements of a flight by air: confirmation of the flight, packing, going to the airport, checking-in, going through the metal-detector, departure lounge, boarding the plane, demonstration of the personal safety drills, interiors and exteriors during the flight and landing. Two physiological measures are used for validation (heart rate and temperature) and a subjective measure (situational anxiety, SA). The results (both t-tests and the discriminant analysis) indicate that the videotape is able to discriminate between phobics and non-phobics of flying in the three variables considered. With respect to sensitivity in detecting change produced by various treatments in clients with phobia of flying, the results are also satisfactory. A greater differentiation is produced between the pre-post treatment measures, both in subjective and in the physiological measures.

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