The perceived effect of load carriage on marksmanship in the tactical athlete

Rob Marc Orr, D. Poke, Michael Stierli, Benjamin Hinton

Research output: Contribution to journalMeeting AbstractResearchpeer-review

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Abstract

Introduction:
Tactical athletes, such as military and specialist police personnel, frequently carry heavy external loads when engaging in marksmanship activities. Although studies have suggested negative relationships between load carriage and marksmanship, there are no known studies comparing subjective expectation (i.e. perception) of marksmanship performance with actual objective measures. The purpose of this investigation was to explore relationships between the perceived effects of load carriage on marksmanship accuracy and objective measures of marksmanship in specialist police officers during an operation-like scenario.

Methods:
Six men (mean age = 34.0 ± 7.4 years, mean height = 184.2 ± 3.3 cm, mean body weight = 96.3 ± 6.4 kg) from a police Tactical Operations Unit participated in a two-phase investigation. The first phase involved recording objective marksmanship measures for primary (p) and secondary (s) weapons during a short move (Sh) and following a tactical mobility task (Mob) in fatigues only (FO) or tactically loaded (TL) conditions. Marksmanship accuracy was assessed by measuring from the fall of each shot to the centre of target and divided by the number of shots (DCOT). Horizontal and vertical shot dispersion (X- and Y-dispersion, respectively) was the measured distance between the two furtherest shots along their respective axis. In the second phase, subjects were asked to assess perceived impacts of load carriage on marksmanship for primary and secondary weapons using a 10 cm visual analogue scale (VAS).

Results:
There were no statistically significant differences in objective marksmanship measures when TL with either weapon. Officer's perceived that their marksmanship would significantly improve when TL for primary (VAS mean = 3.00 ± 2.53 cm, p = 0.016) and secondary (VAS mean = 2.83 ± 2.93 cm, p = 0.039) weapons when compared to the FO conditions. While not significant, trends toward negative correlations between perceived improvement in marksmanship when TL and objective measures of marksmanship existed for primary weapon X-dispersion (r = −0.561, p = 0.247) during the mobility task, and secondary weapon Y-dispersion (r = −0.756, p = 0.082) and DCOT (r = −0.631, p = 0. 179) during the short move. This means that as perception towards improvement increased, marksmanship measures decreased in size (denoting improved performance).

Discussion:
Tactical police operators perceive that their marksmanship accuracy is improved when carrying load with objective measures trending toward supporting this belief. Continual marksmanship training while carrying an external load can ensure appropriate confidence in marksmanship performance when carrying load.
Original languageEnglish
Pages (from-to)e92
JournalJournal of Science and Medicine in Sport
Volume19
Issue numbersupplement
DOIs
Publication statusPublished - 2015
EventASICS Sports Medicine Australia Conference - Gold Coast, Australia
Duration: 21 Oct 201524 Oct 2015
Conference number: 2015

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Weapons
Athletes
Police
Visual Analog Scale
Fatigue
Body Weight

Cite this

@article{da894c2aac2b4eb2b498066d069c6197,
title = "The perceived effect of load carriage on marksmanship in the tactical athlete",
abstract = "Introduction: Tactical athletes, such as military and specialist police personnel, frequently carry heavy external loads when engaging in marksmanship activities. Although studies have suggested negative relationships between load carriage and marksmanship, there are no known studies comparing subjective expectation (i.e. perception) of marksmanship performance with actual objective measures. The purpose of this investigation was to explore relationships between the perceived effects of load carriage on marksmanship accuracy and objective measures of marksmanship in specialist police officers during an operation-like scenario.Methods: Six men (mean age = 34.0 ± 7.4 years, mean height = 184.2 ± 3.3 cm, mean body weight = 96.3 ± 6.4 kg) from a police Tactical Operations Unit participated in a two-phase investigation. The first phase involved recording objective marksmanship measures for primary (p) and secondary (s) weapons during a short move (Sh) and following a tactical mobility task (Mob) in fatigues only (FO) or tactically loaded (TL) conditions. Marksmanship accuracy was assessed by measuring from the fall of each shot to the centre of target and divided by the number of shots (DCOT). Horizontal and vertical shot dispersion (X- and Y-dispersion, respectively) was the measured distance between the two furtherest shots along their respective axis. In the second phase, subjects were asked to assess perceived impacts of load carriage on marksmanship for primary and secondary weapons using a 10 cm visual analogue scale (VAS).Results: There were no statistically significant differences in objective marksmanship measures when TL with either weapon. Officer's perceived that their marksmanship would significantly improve when TL for primary (VAS mean = 3.00 ± 2.53 cm, p = 0.016) and secondary (VAS mean = 2.83 ± 2.93 cm, p = 0.039) weapons when compared to the FO conditions. While not significant, trends toward negative correlations between perceived improvement in marksmanship when TL and objective measures of marksmanship existed for primary weapon X-dispersion (r = −0.561, p = 0.247) during the mobility task, and secondary weapon Y-dispersion (r = −0.756, p = 0.082) and DCOT (r = −0.631, p = 0. 179) during the short move. This means that as perception towards improvement increased, marksmanship measures decreased in size (denoting improved performance).Discussion: Tactical police operators perceive that their marksmanship accuracy is improved when carrying load with objective measures trending toward supporting this belief. Continual marksmanship training while carrying an external load can ensure appropriate confidence in marksmanship performance when carrying load.",
author = "Orr, {Rob Marc} and D. Poke and Michael Stierli and Benjamin Hinton",
year = "2015",
doi = "10.1016/j.jsams.2015.12.354",
language = "English",
volume = "19",
pages = "e92",
journal = "Journal of Science and Medicine in Sport",
issn = "1440-2440",
publisher = "Elsevier",
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}

The perceived effect of load carriage on marksmanship in the tactical athlete. / Orr, Rob Marc; Poke, D.; Stierli, Michael; Hinton, Benjamin.

In: Journal of Science and Medicine in Sport, Vol. 19 , No. supplement, 2015, p. e92.

Research output: Contribution to journalMeeting AbstractResearchpeer-review

TY - JOUR

T1 - The perceived effect of load carriage on marksmanship in the tactical athlete

AU - Orr, Rob Marc

AU - Poke, D.

AU - Stierli, Michael

AU - Hinton, Benjamin

PY - 2015

Y1 - 2015

N2 - Introduction: Tactical athletes, such as military and specialist police personnel, frequently carry heavy external loads when engaging in marksmanship activities. Although studies have suggested negative relationships between load carriage and marksmanship, there are no known studies comparing subjective expectation (i.e. perception) of marksmanship performance with actual objective measures. The purpose of this investigation was to explore relationships between the perceived effects of load carriage on marksmanship accuracy and objective measures of marksmanship in specialist police officers during an operation-like scenario.Methods: Six men (mean age = 34.0 ± 7.4 years, mean height = 184.2 ± 3.3 cm, mean body weight = 96.3 ± 6.4 kg) from a police Tactical Operations Unit participated in a two-phase investigation. The first phase involved recording objective marksmanship measures for primary (p) and secondary (s) weapons during a short move (Sh) and following a tactical mobility task (Mob) in fatigues only (FO) or tactically loaded (TL) conditions. Marksmanship accuracy was assessed by measuring from the fall of each shot to the centre of target and divided by the number of shots (DCOT). Horizontal and vertical shot dispersion (X- and Y-dispersion, respectively) was the measured distance between the two furtherest shots along their respective axis. In the second phase, subjects were asked to assess perceived impacts of load carriage on marksmanship for primary and secondary weapons using a 10 cm visual analogue scale (VAS).Results: There were no statistically significant differences in objective marksmanship measures when TL with either weapon. Officer's perceived that their marksmanship would significantly improve when TL for primary (VAS mean = 3.00 ± 2.53 cm, p = 0.016) and secondary (VAS mean = 2.83 ± 2.93 cm, p = 0.039) weapons when compared to the FO conditions. While not significant, trends toward negative correlations between perceived improvement in marksmanship when TL and objective measures of marksmanship existed for primary weapon X-dispersion (r = −0.561, p = 0.247) during the mobility task, and secondary weapon Y-dispersion (r = −0.756, p = 0.082) and DCOT (r = −0.631, p = 0. 179) during the short move. This means that as perception towards improvement increased, marksmanship measures decreased in size (denoting improved performance).Discussion: Tactical police operators perceive that their marksmanship accuracy is improved when carrying load with objective measures trending toward supporting this belief. Continual marksmanship training while carrying an external load can ensure appropriate confidence in marksmanship performance when carrying load.

AB - Introduction: Tactical athletes, such as military and specialist police personnel, frequently carry heavy external loads when engaging in marksmanship activities. Although studies have suggested negative relationships between load carriage and marksmanship, there are no known studies comparing subjective expectation (i.e. perception) of marksmanship performance with actual objective measures. The purpose of this investigation was to explore relationships between the perceived effects of load carriage on marksmanship accuracy and objective measures of marksmanship in specialist police officers during an operation-like scenario.Methods: Six men (mean age = 34.0 ± 7.4 years, mean height = 184.2 ± 3.3 cm, mean body weight = 96.3 ± 6.4 kg) from a police Tactical Operations Unit participated in a two-phase investigation. The first phase involved recording objective marksmanship measures for primary (p) and secondary (s) weapons during a short move (Sh) and following a tactical mobility task (Mob) in fatigues only (FO) or tactically loaded (TL) conditions. Marksmanship accuracy was assessed by measuring from the fall of each shot to the centre of target and divided by the number of shots (DCOT). Horizontal and vertical shot dispersion (X- and Y-dispersion, respectively) was the measured distance between the two furtherest shots along their respective axis. In the second phase, subjects were asked to assess perceived impacts of load carriage on marksmanship for primary and secondary weapons using a 10 cm visual analogue scale (VAS).Results: There were no statistically significant differences in objective marksmanship measures when TL with either weapon. Officer's perceived that their marksmanship would significantly improve when TL for primary (VAS mean = 3.00 ± 2.53 cm, p = 0.016) and secondary (VAS mean = 2.83 ± 2.93 cm, p = 0.039) weapons when compared to the FO conditions. While not significant, trends toward negative correlations between perceived improvement in marksmanship when TL and objective measures of marksmanship existed for primary weapon X-dispersion (r = −0.561, p = 0.247) during the mobility task, and secondary weapon Y-dispersion (r = −0.756, p = 0.082) and DCOT (r = −0.631, p = 0. 179) during the short move. This means that as perception towards improvement increased, marksmanship measures decreased in size (denoting improved performance).Discussion: Tactical police operators perceive that their marksmanship accuracy is improved when carrying load with objective measures trending toward supporting this belief. Continual marksmanship training while carrying an external load can ensure appropriate confidence in marksmanship performance when carrying load.

U2 - 10.1016/j.jsams.2015.12.354

DO - 10.1016/j.jsams.2015.12.354

M3 - Meeting Abstract

VL - 19

SP - e92

JO - Journal of Science and Medicine in Sport

JF - Journal of Science and Medicine in Sport

SN - 1440-2440

IS - supplement

ER -