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Full-Text Articles in Physiology

Biomechanical Properties Of Land Based And Shallow Water Wait: A Comparative Review Of Literature, Mostafa Yaghoubi, Philip Fink, Wyatt H. Page, Sarah P. Shultz Dec 2020

Biomechanical Properties Of Land Based And Shallow Water Wait: A Comparative Review Of Literature, Mostafa Yaghoubi, Philip Fink, Wyatt H. Page, Sarah P. Shultz

International Journal of Aquatic Research and Education

Aquatic locomotion exercises are frequently used in rehabilitation and cross-training for land-based athletes. Hydrostatic pressure, thermal conductivity and drag force affect a person's ability to move; therefore, it is important to understand differences of biomechanical gait in water vs land. This review investigated biomechanical differences between shallow water and land-based exercises. PubMed, Google Scholar, SPORTDiscus and Scopus were searched; 33 studies included walking forward (27), backward (6) and running (6). Electromyographic amplitude was similar or less in submaximal intensity during aquatic gait, in comparison to on land. At maximal intensities, however, the amplitude was similar (n=5) or higher (n=4) in …


Cardiovascular And Stride Frequency Differences During Land And Aquatic Treadmill Walking, Jessica Burton, Sarah Duffey, Amber Hammonds, Anna Leduc, Rachel Shumate, John Coons, Ryan T. Conners May 2020

Cardiovascular And Stride Frequency Differences During Land And Aquatic Treadmill Walking, Jessica Burton, Sarah Duffey, Amber Hammonds, Anna Leduc, Rachel Shumate, John Coons, Ryan T. Conners

International Journal of Aquatic Research and Education

This study examined heart rate (HR) and stride frequency (SF) values of 30 college-aged males and females during dry-land (DL) and aquatic walking (AW). Aquatic walking trials were completed in an underwater treadmill with the water depth at waist level; the water temperature (31℃ ± 0.1℃) and room temperature (26.6℃ ± 0.1℃) were maintained at thermoneutral levels throughout the study. During each walking condition, HR and SF were recorded at treadmill speeds of 1 mph, 2 mph, and 3 mph. Participants were instructed to walk with their hands at their sides swinging as they would when walking on dry-land unless …


Features Of Acceleration And Angular Velocity Using Thigh Imus During Walking In Water, Koichi Kaneda, Yuji Ohgi, Mark Mckean, Brendan Burkett May 2020

Features Of Acceleration And Angular Velocity Using Thigh Imus During Walking In Water, Koichi Kaneda, Yuji Ohgi, Mark Mckean, Brendan Burkett

International Journal of Aquatic Research and Education

Ten participants were assessed while walking in water and on land with wearable inertial measurement units (IMUs) attached to the right thigh. Longitudinal acceleration, anterior-posterior acceleration, and frontal axis angular velocity were measured at 100 Hz, matched with video analysis sampled at 25 Hz during the walking trials. The longitudinal acceleration showed almost 1 g from initial heel contact to 70% of one cycle, and the anterior-posterior acceleration showed a sinusoidal pattern, synchronizing the approximate posture of the thigh in water. The frontal axis angular velocity fluctuated less while walking in water compared with on land, because thigh motion speed …


Staff Training In Aquatics For Individuals With Disabilities: The Quest, Susan J. Grosse May 2020

Staff Training In Aquatics For Individuals With Disabilities: The Quest, Susan J. Grosse

International Journal of Aquatic Research and Education

Trained instructors in general programs have the ability and resources to initiate and follow through with developing water safe individuals who are capable swimmers. Specific staff training to prepare individuals to facilitate aquatic participation for individuals with disabilities is currently extremely limited. The purpose of this article is to examine the barriers to specialized staff training in aquatics for individuals with disabilities, to suggest necessary staff training content, and to propose topics for further research in the area of staff training. Seeking development of quality staff training programs for those working in aquatics for individuals with disabilities is the quest.


Training Evaluation For Introductory Ocean Lifeguard Instruction: A Practical Example From California, William A. Koon, Ryan M. Gates, Jack Futoran Apr 2020

Training Evaluation For Introductory Ocean Lifeguard Instruction: A Practical Example From California, William A. Koon, Ryan M. Gates, Jack Futoran

International Journal of Aquatic Research and Education

Ocean lifeguards have several responsibilities that require precise training. California State Parks is one of the largest providers of open water lifeguard services in the United States, and trains approximately 200 new lifeguards per year. As part of our lifeguard training section’s quality improvement efforts, we conducted a training needs assessment to help determine how well our introductory ocean lifeguard training curriculum prepared lifeguards to perform job related tasks upon successful completion of the training program. We surveyed both first year and seasoned lead lifeguards on operational needs, training gaps, and specific subject areas. We identified several areas where our …