Hardware Version

Version Used During Ground-based Experiments

ROI_MusLab
The leg press exercise was conducted on a plate loaded Leg Press Machine from Cybex International (Medway, MA) set at a 45-degree angle.

EORS_FTTMP
Lower-body tests were performed using a customized 35° leg press machine (6000a Leg Press with sled tracks extended an additional 91 cm [36 in], Nebula Fitness Equipment, Versailles, OH) equipped with a force plate (Type 9281C, Kistler, Amherst, NY), position transducer (PT5A, Fitness Technology, Skye, SA, Australia), and magnetic braking system (Fitness Technology).

EORS_FOI
Leg press tests were performed using a customized 35° leg press machine (6000a Leg Press, Nebula Fitness Equipment, Versailles, OH). The sled tracks were extended an additional 91 cm (36 inches) by the manufacturer to accommodate ballistic power testing. The leg press is equipped with a force plate (Type 9281C, Kistler Instrument Corp., Amherst, NY), position transducer (PT5A, Fitness Technology, Skye, SA, Australia), and magnetic braking system (Fitness Technology, Skye, SA, Australia). During the leg press strength test, the position of leg press footplate was individualized such that the subject’s knee angle was at 90°, as confirmed via a goniometer.

EORS_TIMED
Isometric strength on the left and right knee extensors were determined using a knee extensor device and leg press modified for isometric testing using a load cell. Subjects were instructed to produce a maximum contraction as quickly and possible and hold it for 3-4 seconds during three attempts with a standard rest period between attempts. If the two highest values differed by more than five percent, then a fourth attempt was conducted.

MR078G
No version description is available for this hardware. Refer to the main description for details.

BEDREST_iRATS
The Quantum Fitness QIS-8036 Horizontal Leg Press machine was used during this study. Resistance exercise were performed three days per week, every other day using a prone leg curl, horizontal leg press, and horizontal squat machine. A standard warm-up protocol was conducted for the lower body prior to exercise. The resistance exercise sessions consisted of a variety of squat, hamstring curl, heel raise and leg press exercises. The protocol varied so that a “HEAVY,” “MEDIUM,” and “LIGHT” day of exercise was performed during the week. The pre-bed rest exercise sessions were used to familiarize the subjects with the exercise equipment, teach subjects proper form, and determine individualized loads to be used during bed rest. The in-bed rest sessions were performed to maintain muscular strength and function during bed rest.

BEDREST_FTT
No version description is available for this hardware. Refer to the main description for details.

EORS_FTP
No version description is available for this hardware. Refer to the main description for details.

Experiment Participation
Skip to page content Experiment + Identification of Skeletal Muscle Performance Thresholds for Extended Duration Functional Task Performance   (EORS_FTP)
+ Functional Task Test (FTT) Muscle Performance Reliability Study   (EORS_FTTMP)
+ Analysis of Skeletal Muscle Metrics as Predictors of Functional Task Performance   (EORS_FOI)
+ Nutrition Coupled with Traditional Resistance or Low-Load Blood Flow Restricted Exercise during Human Limb Suspension   (EORS_TIMED)
+ Functional Fitness Assessment (Flight Analog)   (MR078G)
+ Physiological Factors Contributing to Post Bed Rest Changes in Functional Performance (Functional Task Test)   (BEDREST_FTT)
+ Integrated Resistance and Aerobic Exercise Training With Small Compact Exercise Equipment   (BEDREST_iRATS)
+ Evaluation of the MuscleLab Power Testing System using Bench Press and Leg Press Exercise   (ROI_MusLab)

Mission Participation
Skip to page content Experiment +ECP   (EORS)
+Campaign 1   (Campaign 1)
+Campaign 3   (Campaign 3)
+Campaign 5   (Campaign 5)
+DBLS   (DBLS)
+HDT30   (HDT30)
+Pilot   (Pilot)
+Campaign 11   (CFT70)
+ROI   (ROI)