Data reproducibility of an inertial resistance exercise device suggested for use during space travel

Caruso, John F.; Williams, Julia; Hari, P; Mccoy, J. D.; Coday, Michael A.; Ramsey, Charles A.; Capps, L. B.

doi:10.3233/ies-2006-0251

Cited by 12 publications

(8 citation statements)

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“…As compared with intratrial results, the Table's intertrial data demonstrate more variability. This effect was noted in other studies (9,10) and was attributed in part to the longer length of time between trials that provided the paired data. In addition, a lack of familiarity with the IKE may have also lowered current intertrial reproducibility.…”

Section: Discussionmentioning

confidence: 71%

“…Yet current smallest real difference results compare favorably with those from 2 recent studies that also employed nongravity-dependent resistive exercise devices (9,10). Smallest real difference results ranged from 12 to 850 for workout data obtained from the non-gravity-dependent high-speed device (9) and 4 to 94 for the low-speed apparatus (10). Current smallest real difference results even show less variability than non-exercise research, such as data derived from stroke patients (6).…”

Section: Discussionmentioning

confidence: 77%

“…Exercise data reproducibility was assessed from flywheel ergometer trials; variables included peak angular velocity, as well as concentric and eccentric work and average power values (10). Results showed more peak angular velocity variability vs. work and average power measures, whereby the former variable represented a brief instantaneous effort per set (10). In a similar fashion, reproducibility was assessed for peak and average force, as well as total work, from resistive exercise done on another high-speed device (9).…”

Section: Discussionmentioning

confidence: 99%

“…Prior research (9,10) also noted lower reproducibility from variables based on instantaneous efforts. Exercise data reproducibility was assessed from flywheel ergometer trials; variables included peak angular velocity, as well as concentric and eccentric work and average power values (10). Results showed more peak angular velocity variability vs. work and average power measures, whereby the former variable represented a brief instantaneous effort per set (10).…”

Section: Discussionmentioning

confidence: 99%

“…Perhaps, the factor with the greatest impact is the velocity at which repetitions occur. As it relates to exercise velocity, studies that employed isometric or slow-speed repetitions typically yield high reproducibility values (7,10,18,30). Yet high-speed muscle actions evoke less reproducibility, which is normally attributed to the challenge faced by subjects as they attempt to repeat repetitions at fast rates with an acceptable level of precision (1,7,17,25,28).…”

Section: Introductionmentioning

confidence: 99%

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Data Reproducibility From an Inertial Kinetic Exercise Machine

Caruso

Kucera²,

Hari³

et al. 2010

Journal of Strength and Conditioning Research

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An inertial kinetic exercise (IKE, Oconomowoc, WI, USA) machine was created that permits high-velocity workouts suited for injury rehabilitation and speed development in athletes. In addition, its design does not entail the movement of resistance against Earth's gravitational pull. Thus, the design and operation associated with the IKE may be incorporated into novel environments such as space flight. Yet before it can be used for such reasons, IKE data reproducibility must first be ascertained, which serves as the present study's purpose. Methods to assess data reproducibility required subjects (n = 42) to perform 2 IKE elbow flexor trials, each comprising two 60-second sets separated by a 90-second rest. Preceded by a familiarization session on the IKE, subjects were instructed to perform high-speed elbow flexor trial repetitions in good form. Instrumentation entailed an accelerometer and a computer interfaced with software. Maximum and average forces (MF, AF), as well as work (W), were examined for reproducibility with several test-retest measures. Results showed high reproducibility, yet intertrial variability was greater due in part to the length of time between exercise sessions. It was concluded that MF reproducibility was inherently less partly due to the nature of the variable, which entailed a single instantaneous expression over each 60-second set. In contrast, AF and W denoted a cumulative, and thus better overall, representation of total exercise performance. Based on our high reproducibility values, present IKE instrumentation methods appear to be appropriate. Practical applications suggest that coaches and therapists may want to employ an IKE as instrumented in the present study to derive reproducible performance data on people who may use the device under their supervision.

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Section: Discussionmentioning

confidence: 71%

Section: Discussionmentioning

confidence: 77%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Data Reproducibility From an Inertial Kinetic Exercise Machine

Caruso

Kucera²,

Hari³

et al. 2010

Journal of Strength and Conditioning Research

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Intermittent Palm Cooling’s Impact on Resistive Exercise Performance

et al. 2015

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To examine palm cooling's (15 °C) impact, subjects performed 3 four-set leg press workouts in a randomized sequence. Per workout they received 1 of 3 treatments: no palm cooling, palm cooling between sets, or palm cooling between sets and post-exercise. Dependent variables were examined with three-way ANOVAs; average power underwent a three-way ANCOVA with body fat percentage as the covariate. Simple effects analysis was our post hoc and α=0.05. Left hand skin temperatures produced a two-way interaction (no palm cooling, palm cooling between sets>palm cooling between sets and post-exercise at several time points). A "high responder" subset had their data analyzed with an additional three-way ANOVA that again produced a two-way interaction (palm cooling between sets>no palm cooling>palm cooling between sets and post-exercise at multiple time points). Blood lactate results included a two-way interaction (no palm cooling>palm cooling between sets, palm cooling between sets and post-exercise at 0 min post-exercise). Average power yielded a two-way interaction (palm cooling between sets, palm cooling between sets>no palm cooling for the fourth set). Intermittent palm cooling hastened heat removal and blood lactate clearance, as well as delayed average power decrements.

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Leg and Calf Press Training Modes and Their Impact on Jump Performance Adaptations

Caruso

Coday²,

Ramsey³

et al. 2008

Journal of Strength and Conditioning Research

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To examine the effects of resistance exercise (REX) mode on jump performance, subjects were assigned to one of three groups over a 6-week period with no cross-over. Subjects were assigned to leg and calf press REX on either a standard (n = 10) or ergometer (n = 9) device while a third group (n = 9) served as controls (CTRL). REX subjects worked out twice per week, which consisted of a three-set, 10-repetition paradigm for leg and calf press exercises. Immediately before and after the 6-week period, subjects performed tests that assessed jump (standing vertical jump, four-jump test protocol, depth jump) ability, while a fourth estimated knee extensor fast-twitch percentage (FT%) from fatigue incurred through a 50-repetition isokinetic protocol. Data analyses utilized 3 x 2 (group x time) repeated-measures ANCOVAs. Several dependent variables showed effects by group (standard REX, ergometer REX > CTRL) and time (post > pre). An interaction occurred for explosive leg power factor, a four-jump test variable, with standard REX post-test values as the interaction source. A trend for an interaction occurred for depth jump hang time, as ergometer REX values improved over time. Results suggest that mode-specific adaptations occur with REX training. Thus, athletes are best served with the selection of a REX device that is most specific to the demands of their jump performance task.

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Data reproducibility of an inertial resistance exercise device suggested for use during space travel

Cited by 12 publications

References 0 publications

Data Reproducibility From an Inertial Kinetic Exercise Machine

Data Reproducibility From an Inertial Kinetic Exercise Machine

Intermittent Palm Cooling’s Impact on Resistive Exercise Performance

Leg and Calf Press Training Modes and Their Impact on Jump Performance Adaptations

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