Abstract
Aim:
To determine the differences between male and female marines in cardiovascular load in progressive loaded hikes.
Design:
Prospective cohort study.
Method:
United State Marine Corps trainees (565 males; 185 females) completed six loaded hikes (1: 10kg, 30mins; 2: 10kg, 45mins; 3: 15kg, 30mins, 4: 15kg, 45mins; 5: 20kg, 30mins; 6: 20kg, 45mins) during which heart rate (HR) response was measured. HR average (HRavg), HR maximum (HRmax), and pace were measured via Polar Grit watch. Independent samples t-tests were conducted to compare between genders, with significance set at 0.008 after adjusting for multiple comparisons.
Results:
Female Marines were significantly lighter than male Marines for all hikes (p<0.001) with a significantly heavier relative load (10kg ~15%, 15kg ~25%, 20kg ~33%, p<0.001). There were no significant differences in pace in any hike and no significant differences were found in HRavg or HRmax when comparing male and female Marines during Hikes 1 or 2. HRavg was significantly higher for females during Hike 3 (+9.3bpm, p=0.002), with both HRavg and HRmax significantly higher in Hike 4 (+11.6bpm, +10.9bpm, p<0.001), Hike 5 (+8.2bpm, +9.1bpm p<0.001)and Hike 6 (+6.1bpm, +7.5bpm p<0.001) respectively.
Conclusion:
Female marines have a greater cardiovascular demand during load carriage events when carrying loads above 15kg.
Key Practice Points:
•For female Marines cardiovascular demand may be higher when carrying loads above 15kg.
•Strategies to condition females to carry heavier relative loads need to be developed and this requirement should inform any return-to-training following injury.
To determine the differences between male and female marines in cardiovascular load in progressive loaded hikes.
Design:
Prospective cohort study.
Method:
United State Marine Corps trainees (565 males; 185 females) completed six loaded hikes (1: 10kg, 30mins; 2: 10kg, 45mins; 3: 15kg, 30mins, 4: 15kg, 45mins; 5: 20kg, 30mins; 6: 20kg, 45mins) during which heart rate (HR) response was measured. HR average (HRavg), HR maximum (HRmax), and pace were measured via Polar Grit watch. Independent samples t-tests were conducted to compare between genders, with significance set at 0.008 after adjusting for multiple comparisons.
Results:
Female Marines were significantly lighter than male Marines for all hikes (p<0.001) with a significantly heavier relative load (10kg ~15%, 15kg ~25%, 20kg ~33%, p<0.001). There were no significant differences in pace in any hike and no significant differences were found in HRavg or HRmax when comparing male and female Marines during Hikes 1 or 2. HRavg was significantly higher for females during Hike 3 (+9.3bpm, p=0.002), with both HRavg and HRmax significantly higher in Hike 4 (+11.6bpm, +10.9bpm, p<0.001), Hike 5 (+8.2bpm, +9.1bpm p<0.001)and Hike 6 (+6.1bpm, +7.5bpm p<0.001) respectively.
Conclusion:
Female marines have a greater cardiovascular demand during load carriage events when carrying loads above 15kg.
Key Practice Points:
•For female Marines cardiovascular demand may be higher when carrying loads above 15kg.
•Strategies to condition females to carry heavier relative loads need to be developed and this requirement should inform any return-to-training following injury.
| Original language | English |
|---|---|
| Pages | 493-493 |
| Number of pages | 1 |
| Publication status | Published - 6 Oct 2023 |
| Event | Australian Physiotherapy Association: INGNITE Physiotherapy Conference 2023 - Brisbane Convention Centre, Brisbane, Australia Duration: 5 Oct 2023 → 7 Oct 2023 https://ignite2023.physio/ |
Conference
| Conference | Australian Physiotherapy Association |
|---|---|
| Abbreviated title | INGNITE 2023 |
| Country/Territory | Australia |
| City | Brisbane |
| Period | 5/10/23 → 7/10/23 |
| Other | We have the chance to take physiotherapy to new levels and ignite the future of the profession through innovation and collaboration. Barriers can be broken down and communities connected. Physiotherapists can look to the future and commit to excellence and equality, for themselves and the profession. Challenges can be made and met, passions ignited for what is possible. We can evolve and explore the possibilities and make sure that physiotherapy comes out better than ever before. By igniting your imagination, great things can be achieved! |
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