Cardiorespiratory responses of load carriage in female and male soldiers
(2022) In Applied Ergonomics 101.- Abstract
- Purpose
To investigate the effect of sex and load carriage on cardiorespiratory responses to high intensity exercise in male and female soldiers.
Methods
Soldiers (9 women, 9 men) performed a graded treadmill test until exhaustion with no load (NL) and combat-gear with body armor (CG). Cohen's d effect sizes, paired t-tests and ANOVA were used to study differences between conditions. A mixed linear regression model analyzed the relationship between heart rate (HR) and oxygen uptake (V̇O2) with load and between sexes.
Results
Wearing CG resulted in, for both sexes, a decreased time to exhaustion (−11 min), lower V̇O2peak (L/min) ES = 0.56; VO2peak (mL//kg/min) ES = 2.44, both p < 0.001, a net decrease in... (More) - Purpose
To investigate the effect of sex and load carriage on cardiorespiratory responses to high intensity exercise in male and female soldiers.
Methods
Soldiers (9 women, 9 men) performed a graded treadmill test until exhaustion with no load (NL) and combat-gear with body armor (CG). Cohen's d effect sizes, paired t-tests and ANOVA were used to study differences between conditions. A mixed linear regression model analyzed the relationship between heart rate (HR) and oxygen uptake (V̇O2) with load and between sexes.
Results
Wearing CG resulted in, for both sexes, a decreased time to exhaustion (−11 min), lower V̇O2peak (L/min) ES = 0.56; VO2peak (mL//kg/min) ES = 2.44, both p < 0.001, a net decrease in minute ventilation (ES = 3.53) and no change in HRmax. No sex-difference were present except for absolute V̇O2peak. The VO2 and HR relationship showed a cardiorespiratory reduction wearing CG vs. NL. Added load was equal between sexes, although female soldiers' CG relative to body mass was higher (25%) than male soldiers’ (20%), p < 0.01.
Conclusion
Wearing CG reduces soldiers’ cardiorespiratory capacity and exercise performance level, although the reduction cannot be explained solely based on the added load of CG, instead CG seems to restrict the capacity to fully ventilate. No sex differences were found in relative cardiorespiratory responses to wearing CG compared to NL. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2363d583-6937-4efb-9f65-85a8d5d1fccb
- author
- Larsson, Jonas LU ; Dencker, Magnus LU ; Bremander, Ann LU and Olsson, M. Charlotte
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Ergonomics
- volume
- 101
- article number
- 103710
- publisher
- Elsevier
- external identifiers
-
- scopus:85124976436
- pmid:35217405
- ISSN
- 0003-6870
- DOI
- 10.1016/j.apergo.2022.103710
- language
- English
- LU publication?
- yes
- id
- 2363d583-6937-4efb-9f65-85a8d5d1fccb
- date added to LUP
- 2022-02-22 14:15:11
- date last changed
- 2023-09-28 12:20:36
@article{2363d583-6937-4efb-9f65-85a8d5d1fccb, abstract = {{Purpose<br/>To investigate the effect of sex and load carriage on cardiorespiratory responses to high intensity exercise in male and female soldiers.<br/><br/>Methods<br/>Soldiers (9 women, 9 men) performed a graded treadmill test until exhaustion with no load (NL) and combat-gear with body armor (CG). Cohen's d effect sizes, paired t-tests and ANOVA were used to study differences between conditions. A mixed linear regression model analyzed the relationship between heart rate (HR) and oxygen uptake (V̇O2) with load and between sexes.<br/><br/>Results<br/>Wearing CG resulted in, for both sexes, a decreased time to exhaustion (−11 min), lower V̇O2peak (L/min) ES = 0.56; VO2peak (mL//kg/min) ES = 2.44, both p < 0.001, a net decrease in minute ventilation (ES = 3.53) and no change in HRmax. No sex-difference were present except for absolute V̇O2peak. The VO2 and HR relationship showed a cardiorespiratory reduction wearing CG vs. NL. Added load was equal between sexes, although female soldiers' CG relative to body mass was higher (25%) than male soldiers’ (20%), p < 0.01.<br/><br/>Conclusion<br/>Wearing CG reduces soldiers’ cardiorespiratory capacity and exercise performance level, although the reduction cannot be explained solely based on the added load of CG, instead CG seems to restrict the capacity to fully ventilate. No sex differences were found in relative cardiorespiratory responses to wearing CG compared to NL.}}, author = {{Larsson, Jonas and Dencker, Magnus and Bremander, Ann and Olsson, M. Charlotte}}, issn = {{0003-6870}}, language = {{eng}}, publisher = {{Elsevier}}, series = {{Applied Ergonomics}}, title = {{Cardiorespiratory responses of load carriage in female and male soldiers}}, url = {{http://dx.doi.org/10.1016/j.apergo.2022.103710}}, doi = {{10.1016/j.apergo.2022.103710}}, volume = {{101}}, year = {{2022}}, }