Mark Walsh

Mark Walsh
Miami University | MU · Department of Kinesiology and Health

About

27
Publications
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884
Citations
Introduction
Skills and Expertise

Publications

Publications (27)
Article
Background and aim: Many people use balance training as a rehabilitation or habilitation modality. Although the time course of changes to temporal and spatial aspects of postural sway over the initial weeks of such training is as yet unclear. Particularly, we sought to explore the effects of training on sway during a dynamic task of stance on an ul...
Article
Background: Post activation potentiation in the form of a plyometric during warm-ups have been shown to improve performance in some speed/power events. This study aimed to determine if a plyometric during warm up can increase sprint performance in a 20 and 40 m sprint. Methods: In this study we measured sprint times of 10 male track and field at...
Conference Paper
Full-text available
Perception of the orientation of our head in space as well as on the trunk demands not only the contribution of vestibular and visual cues but also proprioceptive information from the neck and likely from other bodily regions. Tests of cervical spine position sense often focus on the accuracy of repositioning to the natural (neutral) head posture....
Article
Full-text available
Aim. The purpose of this study was to examine the effects of elevated respiratory dynamics on changes to postural control following a 5-kilometer run. Methods. Center of Pressure (COP), respiration rate (b/min), and respiration volume (1/min) were recorded at baseline and immediately following a 5k-run (at 0, 2, 5, and 10 minutes post-run) for eigh...
Article
Full-text available
Postural sway was assessed [via center of pressure (COP) 95% elliptical area (EA), path length (PL), normalized path length (PL(n)) and sample entropy (SEn)] in four conditions of bipedal upright stance [compliant (Foam) vs. non-compliant (Hard) with eyes-open (EO) vs. eyes-closed (EC)] prior to, and immediately following, a six-week balance traini...
Article
Previous research has shown that static stretching has an inhibitory effect on sprinting performances up to 50 m. The purpose of this study was to see what would happen to these effects at longer distances such as those seen in competition. This study used a within-subjects design to investigate the effects of passive static stretching vs. no stret...
Article
Full-text available
The purpose of this study was to examine the effect of a practice regimen that targets the bike-to-run transition for triathlons; known as brick workouts. The principle of specificity suggests that since this skill is a critical transition in a triathlon, having further impact on the subsequent running section, practicing this skill is vital for su...
Article
This case study reports on selected measures of locomotion (running) in a 5-year-old patient with xeroderma pigmentosum after chiropractic care. A 5-year-old female patient (16.4 kg, 99.1 cm) with xeroderma pigmentosum (type A) volunteered to participate in the experiment with the consent of her parents. The patient had well-documented signs of del...
Data
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Objective: This case study reports on selected measures of locomotion (running) in a 5-year–old patient with xeroderma pigmentosum after chiropractic care. Clinical Feature: A 5-year–old female patient (16.4 kg, 99.1 cm) with xeroderma pigmentosum (type A) volunteered to participate in the experiment with the consent of her parents. The patient had...
Article
Full-text available
SmartCranks use a free running bearing to promote independent pedal work by each leg during cycling. This system is designed for training the upstroke phase during cycling. The effects of training with SmartCranks on the power output (PO) and on cycle work distribution at the anaerobic threshold and the maximum power level were examined. Twenty mal...
Article
Full-text available
The objective of the present study was to investigate the age-related effects of submaximal static and cyclic loading on the mechanical properties of the vastus lateralis (VL) tendon and aponeurosis in vivo. Fourteen old and 12 young male subjects performed maximal voluntary isometric knee extensions (MVC) on a dynamometer before and after (a) a su...
Article
Full-text available
The purposes of this study were to examine gender differences during drop jumps, to evaluate the effect of a set of simple instructions on kinematic and kinetic parameters during a drop jump, and to determine if there are gender differences in the effects of instruction on those parameters. Twenty-five basketball players, 13 men and 12 women, perfo...
Article
The purposes of this study are to examine gender differences in the contribution of the arm swing to jump height in men and women basketball players and to examine the role of upper-body strength in the contribution of arm swing to jump height. National Collegiate Athletic Association Division I basketball players (men n = 13, women n = 12) perform...
Article
The ability to jump high is considered important in a number of sports. It is commonly accepted that the use of the arms and a counter movement increase jump height. In some sport situations (e.g., volley ball block, basketball rebound), athletes may not be able to utilize a counter movement or arm swing. The purpose of this study is to examine gen...
Article
The purpose of this study was to investigate the effect of the differences between the actual fascicle length during a voluntary contraction and the fascicle length at rest of the triceps surae muscle on the determination of the voluntary activation (VA) by using the interpolated twitch technique. Twelve participants performed isometric voluntary m...
Article
Full-text available
There are several ways of carrying the ball in rugby union, which could influence the speed at which a player can run. We assessed 52 rugby players (34 males, 18 females) during a maximum sprint over 30 m without the ball, with the ball under one arm, and with the ball in both hands. Timing gates were used to measure time over the initial 10 m and...
Article
The purpose of this study was to determine the reliability and validity of a portable force plate when analyzing jumping and landing tasks. Subjects performed 3 drop vertical jumps and 3 drop landings on both a standard strain gauge laboratory force plate and a portable force plate. In contrast to typical laboratory installed force plates, the port...
Article
Full-text available
The aim of the present study was to examine whether or not the compliance of the gastrocnemius medialis (GM) tendon and aponeurosis is influenced by submaximal fatiguing efforts. Fourteen elderly male subjects performed isometric maximal voluntary plantarflexion contractions (MVC) on a dynamometer before and after two fatiguing protocols. The proto...
Article
The purposes of this study are (a) to examine the effects of contact time manipulation on jump parameters and (b) to examine the interaction between starting height changes and contact time changes on important jump parameters. Fifteen male athletes performed a series of drop jumps from heights of 20, 40, and 60 cm. The instructions given to the su...
Article
The purposes of this study are: a) to examine the possibility of influencing the leg stiffness through instructions given to the subjects and b) to determine the effect of the leg stiffness on the mechanical power and take-off velocity during the drop jumps. A total of 15 athletes performed a series of drop jumps from heights of 20, 40 and 60 cm. T...

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Project (1)
Project
natural elastic decay patterns & control associated with runners at point of contact with running surface.