Evidence map›Paper›PMID 28321637›Full record

Trial reportEuropean journal of applied physiology2017

The time course of short-term hypertrophy in the absence of eccentric muscle damage.

Matt S Stock, Jacob A Mota, Ryan N DeFranco, Katherine A Grue, A Unique Jacobo, Eunhee Chung, Jordan R Moon, Jason M DeFreitas, Travis W Beck

Registry-linked trialAbstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in European journal of applied physiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05504616 (Physical Activity in Axial Spondyloarthritis), which is not on this map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05504616 naunknown statusnot on this mapstarted 2022, after this paper: background citation

Physical Activity in Axial Spondyloarthritis: Development and Implementation of an Evidence-Based Health Technology Approach to Improve Adherence to Recommended Guidelines

TypeinterventionalSponsorUniversity Health Network, TorontoRan2022 to 2024Enrolled106ConditionsAxial SpondyloarthritisArmsHealth technology-based intervention strategy
3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Matt S StockDepartment of Health Professions, University of Central Florida, Health and Public Affairs Bldg I, Room 258, 4364 Scorpius Street, Orlando, FL, 32816-2205, USA. matt.stock@ucf.edu.
Jacob A MotaDepartment of Exercise and Sport Science, University of North Carolina-Chapel Hill, Chapel Hill, NC, USA.
Ryan N DeFrancoDepartment of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, USA.
Katherine A GrueDepartment of Kinesiology and Sport Management, Texas Tech University, Lubbock, TX, USA.
A Unique JacoboHonors College, Texas Tech University, Lubbock, TX, USA.
Eunhee ChungDepartment of Kinesiology, Health, and Nutrition, University of Texas at San Antonio, San Antonio, TX, USA.
Jordan R MoonAmerican Public University System,, Charles Town, WV, USA.
Jason M DeFreitasApplied Neuromuscular Physiology Laboratory, Oklahoma State University, Stillwater, OK, USA.
Travis W BeckDepartment of Health and Exercise Science, University of Oklahoma, Norman, OK, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIt has been proposed that the increase in skeletal muscle mass observed during the initial weeks of initiating a resistance training program is concomitant with eccentric muscle damage and edema. PURPOSE: We examined the time course of muscle hypertrophy during 4 weeks of concentric-only resistance training.

methodsThirteen untrained men performed unilateral concentric-only dumbbell curls and shoulder presses twice per week for 4 weeks. Sets of 8-12 repetitions were performed to failure, and training loads were increased during each session. Subjects consumed 500 ml of whole milk during training. Assessments of soreness, lean mass, echo intensity, muscle thickness, relaxed and flexed arm circumference, and isokinetic strength were performed every 72 or 96 h.

resultsSoreness, echo intensity, relaxed circumference, and peak torque data did not significantly change. Significant increases in lean mass, muscle thickness, and flexed circumference were observed within seven training sessions. Lean mass was elevated at tests #7 (+109.3 g, p = .002) and #8 (+116.1 g, p = .035), with eight different subjects showing changes above the minimal difference of 139.1 g. Muscle thickness was elevated at tests #6 (+0.23 cm, p = .004), #7 (+0.31 cm, p < .001), and #8 (+0.27 cm, p < .001), with ten subjects exceeding the minimal difference of 0.24 cm. There were no changes for the control arm.

conclusionIn individuals beginning a resistance training program, small but detectable increases in hypertrophy may occur in the absence of eccentric muscle damage within seven training sessions.

Indexed as

AdultHumansHypertrophyMaleMuscle, SkeletalMyalgiaReaction TimeResistance TrainingConcentricForceLean massMuscle massSorenessTorque

Identifiers

PMID28321637

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.