title: Combined resistance and endurance training improves physical capacity and performance on tactical occupational tasks.
abstract: The purpose of this study is to evaluate the effectiveness of aerobic endurance (E), strength (R), and combined endurance and strength (CB) training for improving performance of tactical occupational tasks and determine if combined training interferes with performance enhancements of E or R alone. A total of 56 recreationally active women were randomly placed into four groups: R (n = 18), E (n = 13), CB (n = 15), Control (n = 10). Subjects trained three non-consecutive days per week for 8 weeks. Performance was measured pre-, mid-, and post-training for bench press one-repetition maximum (1-RM), squat 1-RM, bench press throw and squat jump peak power, VO2peak, 3.2 km load carriage (LC), 3.2 km run (run), and repetitive lift and carry (RLC). R and E demonstrated improvements which were generally specific to their training. R improved squat (48.3%) and bench press 1-RM (23.8%), bench press throw (41.9%), RLC (31.3%), and LC (11.5%). E improved run (14.7%), VO2peak (6.2%), squat 1-RM (15.3%), LC (12.9%), and RLC (22.5%). CB improved squat (37.6%) and bench press 1-RM (20.9%), bench press throw (39.6%), VO2peak (7.6%), run (10.4%), LC (13.1%), and RLC (45.5%). Post-training 1-RM squat was greater in R and CB than E, while E completed the 3.2 km load carriage task faster than C. In conclusion, 8 weeks of combined training improved performance in all tactical occupational tasks measured and did not interfere with improvements in strength, power and endurance measures compared to R or E alone.
authors.affiliation: Military Performance Division, US Army Research Institute of Environmental Medicine, Building 42, Kansas Street, Natick, MA 01760, USA. nathan.hendrickson@us.army.mil
authors.forename: Nathan R
authors.initials: NR
authors.lastname: Hendrickson
authors.forename: Marilyn A
authors.initials: MA
authors.lastname: Sharp
authors.forename: Joseph A
authors.initials: JA
authors.lastname: Alemany
authors.forename: Leila A
authors.initials: LA
authors.lastname: Walker
authors.forename: Everett A
authors.initials: EA
authors.lastname: Harman
authors.forename: Barry A
authors.initials: BA
authors.lastname: Spiering
authors.forename: Disa L
authors.initials: DL
authors.lastname: Hatfield
authors.forename: Linda M
authors.initials: LM
authors.lastname: Yamamoto
authors.forename: Carl M
authors.initials: CM
authors.lastname: Maresh
authors.forename: William J
authors.initials: WJ
authors.lastname: Kraemer
authors.forename: Bradley C
authors.initials: BC
authors.lastname: Nindl
mesh_terms: D000293:Adolescent; D000328:Adult; D017079:Exercise Tolerance / Q000502:physiology*; D005260:Female; D006801:Humans; D009790:Occupations; D010807:Physical Endurance / Q000502:physiology*; D010809:Physical Fitness / Q000502:physiology*; D014938:Work Capacity Evaluation; D055815:Young Adult
references.citation: Med Sci Sports Exerc. 2004 Dec;36(12):2119-27
references.pmid: 15570149
references.citation: J Appl Physiol (1985). 2009 Mar;106(3):929-34
references.pmid: 19112161
references.citation: Eur J Appl Physiol. 2004 Aug;92(4-5):376-84
references.pmid: 15241691
references.citation: J Appl Physiol (1985). 1999 May;86(5):1527-33
references.pmid: 10233114
references.citation: Med Sci Sports Exerc. 2001 Jun;33(6):1011-25
references.pmid: 11404668
references.citation: Can J Appl Physiol. 2003 Feb;28(1):27-37
references.pmid: 12671193
references.citation: J Appl Physiol (1985). 1998 Aug;85(2):695-700
references.pmid: 9688748
references.citation: J Appl Physiol (1985). 1995 Mar;78(3):976-89
references.pmid: 7775344
references.citation: Eur J Appl Physiol. 2003 Mar;89(1):42-52
references.pmid: 12627304
references.citation: J Appl Physiol (1985). 1985 Nov;59(5):1446-51
references.pmid: 4066574
references.citation: Work. 1993;3(3):62-8
references.pmid: 24442116
references.citation: J Appl Physiol (1985). 1994 Mar;76(3):1247-55
references.pmid: 8005869
references.citation: J Strength Cond Res. 2009 Jul;23(4):1300-8
references.pmid: 19528871
references.citation: Mil Med. 2004 Dec;169(12):994-9
references.pmid: 15646194
references.citation: J Strength Cond Res. 2007 May;21(2):613-20
references.pmid: 17530970
references.citation: J Strength Cond Res. 2008 Mar;22(2):524-34
references.pmid: 18550970
references.citation: Med Sci Sports Exerc. 2002 Feb;34(2):356-63
references.pmid: 11828248
references.citation: Med Sci Sports Exerc. 1995 Mar;27(3):429-36
references.pmid: 7752872
references.citation: Sports Med. 1987 Mar-Apr;4(2):79-85
references.pmid: 3299613
references.citation: Med Sci Sports Exerc. 2002 Mar;34(3):511-9
references.pmid: 11880817
references.citation: Med Sci Sports Exerc. 2000 Jun;32(6):1175-84
references.pmid: 10862549
references.citation: J Sports Med Phys Fitness. 1987 Sep;27(3):269-75
references.pmid: 3431108
references.citation: Eur J Appl Physiol Occup Physiol. 1980;45(2-3):255-63
references.pmid: 7193134
references.citation: J Clin Densitom. 2000 Spring;3(1):35-41
references.pmid: 10745300
references.citation: Eur J Appl Physiol. 2000 Mar;81(5):418-27
references.pmid: 10751104